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Why Is My OPPO Phone Not Detecting the SIM Card

Applicable products： Smartphones System version： ColorOS 15.X，ColorOS 15 and above，ColorOS 15，ColorOS 14.X，ColorOS 14.1，ColorOS 13.1，ColorOS 12.X，ColorOS 12，ColorOS 11，ColorOS 7.X，ColorOS 7.2，ColorOS 7.1，ColorOS 7，ColorOS 6.1，ColorOS 6.0，ColorOS 5.2，ColorOS 5.1，ColorOS 5.0，ColorOS 3.X，ColorOS 3.2，ColorOS 3.1，ColorOS 3.0

Are you constantly receiving a notification indicating "No SIM Card inserted," "Invalid SIM," or "SIM Card cannot be detected" on your OPPO device? There are several reasons for a SIM card not being detected or read, such as the incorrect position of the SIM, the SIM card slot malfunctioning or being damaged, the SIM card being disabled, or the phone's software being corrupted. To troubleshoot these issues, we provided some helpful guides below. Read on. Note: Check your phone's ColorOS versions in [Settings] > [About Phone] / [About Device]. Troubleshooting SIM Card Detection Issue on OPPO Phones Below are the troubleshooting steps you can follow if you're having trouble with the SIM card not detecting on your OPPO phone. Restart your phone Press and hold the Power and Volume Up button for at least 10 seconds or until you see the OPPO logo. Check the SIM card Turn off your phone by pressing the Power button and sliding or tapping [Power off] and take out the SIM tray using the ejector tool that comes with your OPPO phone. Check that the SIM card is properly inserted or look for signs of damage. Disable and enable SIM card. Go to [Settings] > [Dual SIM & Mobile Network] / [Dual SIM & Cellular] / [SIM & Mobile Network] / [SIM Card & Mobile Data] / [Mobile Network], tap the SIM and toggle on [Enable]. Try another SIM card (if you have one) on your Android phone. This should tell you whether the error is with the SIM card or the phone and SIM slot. If the SIM is not detectable on another phone, refer to your network provider. If the SIM is detected on another phone, continue the following troubleshooting steps or send your OPPO phone to the nearest service center for inspection. Factory data reset the phone If all the above steps have not fixed the problem, reset your OPPO phone to factory settings. Back up and transfer the data on your phone first, then reset your OPPO phone to its initial state and settings. For ColorOS 15: Go to [Settings] > [System & update] > [Back up & reset] > [Reset phone] and tap [Erase all data]. For ColorOS 13 to ColorOS 14: Go to [Settings] > [Additional settings] > [Back up and reset] > [Reset phone] and choose an option to erase all data. For ColorOS 12: Go to [Settings] > [System settings] > [Back up and reset] > [Reset phone] and tap [Erase all data] and choose an option to erase all data. For ColorOS 11: Go to [Settings] > [Additional settings] > [Back up and Reset] > [Erase all data (factory reset)] and choose an option available for factory reset. If the above steps do not resolve the issue, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. Related articles: What to Do If I Lost My SIM Card/SIM Card Broken How to Set Up Dual SIM on OPPO Phone * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

How to Use Diagnostics to Monitor Your OPPO Phone’s Health

Applicable products： All products System version： No system version involved

Your OPPO smartphone includes a tool called Diagnostics within the Phone Manager app. Think of it as a health check center for your phone. Whenever your device acts up—like the touchscreen not responding or other unexpected issues, you can run Diagnostics to inspect various parts of the system and get a report of what might be wrong. What Diagnostics Can Do It checks components of your phone (e.g. touchscreen, sensors, battery). It shows you which parts are working well and which might have problems. You can run selected checks or full checks depending on what issue you’re facing. You get a report at the end, and you can act on the suggestions. How to Run Diagnostics Open the [Phone Manager] app on your OPPO device. Tap the three-dot icon (or “:” / “⠇”) in the top right corner. Select [Diagnostics]. Choose which items you want to test (e.g. touch screen, sensors, battery). Tap [Run diagnostics]. Follow the on-screen instructions. You can skip some tests if you want. After the tests complete, a detection result report appears. Use the results to fix or adjust settings based on what the report shows. How to View Past Diagnostics Reports Inside Diagnostics, tap the same three-dot icon (or “:” / “⠇”). Select [Records] to see earlier test results. This helps you track how your phone’s components have changed over time. Why Use Diagnostics Catch small issues before they become big ones. Know exactly which component is failing. Save time when explaining issues to service technicians. Decide whether a repair is needed or just a software reset. When to Use It When the screen is unresponsive. If sensors like proximity or accelerometer aren’t working. When battery life drops suddenly. Before you bring your phone for service, to collect data. What Diagnostics Can’t Do It won’t fix hardware failures by itself. It may not detect every kind of software bug. If a component is damaged (e.g. after a drop or liquid exposure), Diagnostics may only show failure but can’t repair the damage. Related articles: How to Locate an OPPO Service Center Near You How to Check Your OPPO Device's Warranty Status What is Common Problems Detection on OPPO Phone * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

Why Is My Mobile Data Not Working on OPPO Phone

Applicable products： Smartphones System version： ColorOS 15.X，ColorOS 15 and above，ColorOS 15，ColorOS 14.X，ColorOS 14.1，ColorOS 13，ColorOS 12.X，ColorOS 12，ColorOS 11，ColorOS 7.X，ColorOS 7.2，ColorOS 7.1，ColorOS 7，ColorOS 6.0，ColorOS 5.0，ColorOS 3.X，ColorOS 3.2，ColorOS 3.1，ColorOS 3.0

Using your OPPO phone's mobile data while you're out can be really convenient, especially when there's no Wi-Fi available. However, there are instances when the mobile data is not functioning properly due to the signal, your OPPO phone's settings, or other reasons. The troubleshooting guide below will help you resolve this problem. How to Troubleshoot Mobile Data Issues Losing access to mobile data can prevent you from using essential services such as messaging apps, email, web browsing, and social media. If your OPPO phone is unable to connect to the mobile data network, there are several steps you can follow to identify and resolve the issue. The guide below outlines practical troubleshooting methods to help restore your data connection. Check your phone's signal Check the signal icon on the status bar to see if your phone has weak, unstable, or has no signal. If you are in weak signal areas, change your location and try again. See How to Fix No Network or Poor Signal on OPPO Phones. Weak 2/3G network signal: Signal strength is at 0-2 bars. Weak 4G network signal: The up and down arrows of the "4G" icon do not light on. Turn on and off the Airplane Mode There are two ways to turn on/off the Airplane Mode. Control Center: Swipe down to see the Control Center, then tap the [Airplane Mode] icon. Through Settings: For ColorOS 14.1 to ColorOS 15 and above : Go to [Settings] > toggle the [Airplane mode] off. For ColorOS 11 to ColorOS 14 : Go to [Settings] > tap [Connection & sharing] > toggle the [Airplane mode] off. For ColorOS 7 and below: Go to [Settings] > toggle the [Airplane mode] off. Consult your mobile operator Check with your operator to make sure you have enough data under your account/SIM card. Check your SIM Card Take out the SIM card using the ejector tool that comes inside the box and put it back in, and see if the connection is successful. Try another SIM card on your phone. If your phone holds two SIM cards, go to [Settings] > [Dual SIM and mobile network] / [Mobile Network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data], switch to the other SIM card, and try again. Check OPPO phone Settings If there is a VPN connection, disconnect it. Enable mobile data: Go to [Settings] > [Mobile Network] / [Dual SIM and mobile network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] > [Mobile data] and enable it. Or swipe down to see the Control Center and tap the [ Mobile data] icon. Turn off Wi-Fi Connection: Go to [Settings] > [Wi-Fi] and turn off Wi-Fi. Or swipe down to see the Control Center and tap the [ Wi-Fi] icon. Check the Preferred network type: Go to [Settings] > [Dual SIM and mobile network] / [Mobile Network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] > tap a SIM card > [Preferred Network Type], adjust the preferred network type to [4G/3G/2G (Auto)]. Reset Access Points: Go to [Settings] > [Dual SIM and mobile network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] > tap a SIM card you are using > [Access Point Name] and tap [Reset]. Note: Some models don't have this option and APN updates automatically with the network on. In some OPPO devices: Go to [Settings] > [Dual SIM and mobile network] / [Mobile Network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] and tap a SIM, then tap [Access Point Name] and at the upper right corner, tap the [two-dotted] icon and tap [Reset access points]. Change or reset carrier network settings Go to [Settings] > [Dual SIM and mobile network] / [Mobile Network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] > tap a SIM card > [Access Point Name], and switch to another one. If the problem persists, follow the steps above to reset the Access point name. Go to [Settings] > [Dual SIM and mobile network] / [Mobile Network] / [Dual SIM & Cellular] / [Dual SIM & Cellular Network] / [SIM Card & Mobile Data] > tap a SIM card > [Carrier], and turn on or tap [Choose automatically] or [Auto select]. Restart your phone Press and hold the Power and Volume Up buttons for at least 8 seconds or until you see the OPPO logo. Or press and hold the Power button and swipe to [Restart]. Check for a software update Go to [Settings] > [System updates] / [Software update] / [About device], detect, and update your phone to the latest software version. Reset your OPPO phone to factory settings Back up and transfer the data on your OPPO phone first. See How to Factory Reset an OPPO Phone. Note: Make sure to use your phone in an open area within operator network coverage. If you're traveling internationally, make sure that you have shopped for international roaming plans. Make sure your phone is not severely worn, aging, corroded, or accidentally damaged. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. Related articles: What to Do If Mobile Data Is Slow on Your OPPO Phone * Pictures, settings, and paths might differ from those of your phone, but that does not affect the description in this article.

Why is OPPO Phone Heating Up While in Use

Applicable products： Smartphones System version： No system version involved

Overheating in smartphones is a common issue that can affect device performance, battery life, and overall user experience. In OPPO phones, factors such as extended usage, direct sunlight, or high ambient temperatures may contribute to increased heat. Identifying the causes and applying proper usage practices can help manage temperature levels and prevent long-term damage. This guide explains the common reasons behind smartphone overheating and offers practical steps to keep your OPPO device operating within safe temperature limits. Reasons your OPPO phone is heating up The following might be the reason why your OPPO smartphone is getting hot: Overusing the phone. The phone display brightness is set too high. Exposed to direct sunlight or a hot environment. Running too many apps at the same time. Playing games for a prolonged duration. Connected to Bluetooth devices for too long. Tips and troubleshooting steps when OPPO phone heats up If your OPPO smartphone often heats up, perform the following steps: Step 1: Disable wireless connections when not in use Turn off other wireless connections such as mobile data, Wi-Fi, Bluetooth, GPS, and other connections when not in use. Go to your phone's Control Center by tapping and sliding down from the top of your phone's screen > Disable [Wi-Fi], [Bluetooth], and [Location]. Another method to disable the following is through Settings: Disable Wi-Fi: Go to [Settings] > [Wi-Fi] > Disable your Bluetooth by toggling the enable/ disable button. Disable Bluetooth: Go to [Settings] > [Bluetooth] > Disable your Bluetooth by toggling the enable/ disable button. Disable GPS/ Location: Go to [Settings] > [Location] > Disable the feature by toggling the enable/ disable button. * Alternatively, turn off these features on your OPPO phone's Control Center. Swipe down from the top of your phone screen to access the Control Center. Step 2: Dim your phone screen Lower your screen brightness and turn off Auto-Brightness in [Settings] > [Display & Brightness]. You can also control your screen brightness through your OPPO smartphone's Control Center: Go to [Control Center] by tapping and sliding down from the top of your screen > Adjust the brightness based on your preference. Note: Refer to this link to further manage your OPPO phone screen's display settings. Step 3: Place your phone in a cool area Put your device in a cool, moisture-free, and well-ventilated area with an environment that's less than 32°C (90° F). Step 4: Clear background apps Clear or stop all the background apps running that are not in use: Tap the Multi-task or Recent task key located on the bottom left corner of your screen beside the home button > Tap [Close] / [Clean all]. Step 5: Don't use the phone while downloading If big files are being downloaded, pause the download until the phone cools down. Additionally, if you are making/ receiving calls, please ensure that the network connection has a sufficient signal, as a weak network will cause an increase in battery consumption. It will cause your phone to heat up. Step 6: Restart the phone Press and hold the Power and Volume Up buttons for over 10 seconds. Step 7: Update your phone's software Make sure the phone’s software is up to date. Go to [Settings] > [Software Update] / [System update] / [About device]. Note: After the upgrade, a series of optimizations will run in the background, which may cause the phone to heat up and experience lags. For example, some apps need to be re-adapted and optimized in the background, and files on the phone will be re-scanned to avoid potential safety hazards. Please be reassured that the phone will return to normal after some time. Step 8: Reset to factory settings If the issue persists, back up and transfer your data, then perform a factory data reset: Back up and transfer the data on your phone first, then go to [Settings] > [Additional settings] > [Back up and reset] > [Factory data reset], then your phone will go back to its initial state and settings. To know more about how you could factory reset an OPPO phone, including its complete guide, go to this link. Note: Do not root the phone yourself. Rooting may cause phone system damage, and you will void your phone's warranty. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

What to Do If OPPO Phone Won't Flash Charge

Applicable products： Smartphones System version： ColorOS 14 and above，ColorOS 11.1 and above，ColorOS 5.0-7.2，ColorOS 11 and above，ColorOS 12 and above，ColorOS 3.X，ColorOS 3.2，ColorOS 3.1，ColorOS 3.0

To solve the problem if the phone won't charge or the VOOC flash charge is not working, you may check the phone charging port and connection, restart the phone, and update the system. Read on and learn more about why your phone won't flash charge. About VOOC and Super VOOC Charge Developed by OPPO independently, VOOC/Super VOOC Charge comes out with an intelligent *5-level safety mechanism, offering 4x faster charging than conventional chargers. Note: *5-level safety mechanism covers all aspects of the charging process from outlet to phone battery, from the adapter to the port and the internal parts. OPPO phone flash charging Your OPPO phone can be VOOC or Super VOOC charged under the following conditions: Your phone should be VOOC/Super VOOC compatible. Please refer to the actual product. Charge the phone with the original VOOC or Super VOOC charging accessories (including the VOOC power bank). The VOOC/Super VOOC icon will only appear on the lock screen if you are using the system theme. Note: To flash charge your phone, connect it to the VOOC adapter using the VOOC cable, or connect the VOOC Power Bank directly to your phone. Your phone will not be flash charged if you use a single VOOC accessory. What to do if your phone won't flash charge Step 1: Check the phone charging port and connection Check if the charging port is blocked, damaged, or loose. Remove any debris from the charging port. If the charging port is seriously loose, worn, corroded, or aging, stop charging to avoid unexpected faults such as leakage or short circuit, and send the phone to repair at once. Check the connection of your phone charging port, VOOC adapter, and VOOC cable, and reconnect the VOOC adapter to the USB port. Make sure that everything is plugged in firmly. Note: Try other VOOC adapters on your phone, or charge other VOOC-compatible phones with your VOOC adapter, and see if you fixed the issue. Step 2: Check the phone's temperature. Keep the temperature of your OPPO phone in check when charging. The suitable temperature when VOOC/ Super VOOC is charging normally is in the range of 16 to 45°C. Step 3: Check your OPPO phone theme The VOOC / Super VOOC icon will only appear on the lock screen if you are using the system theme. On your home screen, tap on [Theme Store] > [Me] > [My resources] select the Default theme then tap[Apply] . What if the Issue Still Persist If your OPPO phone still won’t flash charge after checking the charger, cable, and port, the issue may be related to the device’s software or internal settings. In such cases, performing a few additional troubleshooting steps may help resolve the problem. This section outlines actions you can take to address any lingering issues that might be affecting your phone’s ability to flash charge. These include restarting the device, updating the system software, or performing a full reset after backing up your data. Follow the steps below to proceed. Restart your Phone: Unplug all charging cables and restart your phone. To restart your OPPO phone, press and hold the Power and Volume Up buttons for at least 8 seconds or until you see the OPPO logo. Update the System: Go to [Settings] > [Software Updates] / [System Updates] / [About Device], detect and update your phone system to the latest software version, and see if this fixed the issue. Back Up and Reset Your Phone: Back up your phone to secure all the data stored in your OPPO phone and reset it. To reset, see How to Factory Reset an OPPO Phone. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. * Pictures, settings, and paths might differ from those of your phone, but that does not affect the description in this article. Moreover, ALL the images used are for illustration purposes ONLY. The actual product may vary due to product enhancement.

OPPO Phone Screen Not Turning on When Receiving Calls

Applicable products： Smartphones System version： All system versions

In rare instances when you receive calls, your OPPO phone rings and vibrates, but the phone screen doesn't turn on, and you are unable to see the caller information on the display. A software glitch can cause this issue. A temporary quick fix to see who is calling when the display doesn't show is to open the Phone app. If the issue continues during the next incoming call, try these six troubleshooting steps to fix the phone not turning on when receiving calls issue. Read on! Screen not turning on for incoming calls Restart the phone Press and hold both the Power and Volume Up buttons for at least eight seconds until you see the OPPO logo. Remove the phone case and screen protector Third-party screen protectors and cases may block the sensor and should be removed. We recommend our customers only to use the original case and screen protector. Perform Component Check/Common Problems Detection Check for sensor error using Common Problems Detection in Phone Manager. If detection results for Light Sensor returns Error or Not Detected, contact OPPO Support Team or take your phone to the service center. Note: This option is only available for ColorOS 3.2 and above devices. For ColorOS 12 and above Go to [Tools] folder > [Phone Manager] ＞ [┆] ＞ [Diagnostics] Select [Sensors] and disable other components. Tap [Run diagnostics] and follow the on-screen instructions to check if your Light Sensor works properly. For ColorOS 11: Go to [Phone Manager] > [Diagnostics] > [Continue]. Select [Sensors] and disable other components. Tap [Run diagnostics] and follow the on-screen instructions to check if your Light Sensor works properly. For ColorOS 6.1 to 7.2 Go to [Phone Manager] > [Quick Check] > [Start Check]. Select [Sensors] and disable other components. Tap [Check] and follow the on-screen instructions to check if your Light Sensor works properly. Use default Phone app and lock screen apps Uninstall third-party call or lock screen application and use the default Phone app or lock screen passcode. Update the phone software Go to [Settings] > [Software Updates] and update your phone to the latest software version. * DO NOT root your phone yourself, for that might affect phone’s system performance, and the warranty service will be terminated. Reset the phone system settings Go to [Settings] > [Additional Settings] > [Backup and Reset] > [Reset to Factory Settings] > [Reset System Settings Only]. (This option is available with devices ColorOS 3.2 and above). Note: This option will reset all system settings without deleting any data or media files. Reset the phone to factory settings Back up and transfer your data, then perform factory data reset. Go to [Settings] > [Additional Settings] > [Backup and Reset] > [Reset to Factory Settings] > [Erase All Data]/[Erase All Content and Settings] and follow the onscreen instructions to restore your phone to its factory settings. Note: Factory data reset will completely WIPE all the data on your phone. Before erasing all data, always make an external backup of your device because once you wipe the device, data cannot be restored. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. In case there’s no OPPO Service Center in the country where you are located, kindly contact our Customer Support to help you unlock the device. * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

Why Is My OPPO Camera App Not Responding

Applicable products： Smartphones System version： All system versions

If your OPPO phone’s camera won’t open, shows a black screen, or suddenly crashes, the issue may be caused by temporary software conflicts, cached data, or another app using the camera in the background. These are common problems that can usually be resolved through simple troubleshooting steps. This guide explains the possible reasons your OPPO camera may not be working and provides clear, step-by-step solutions—such as clearing the camera cache or adjusting app permissions, to help restore normal camera function. Note: Check your ColorOS version in [Settings] > [About Phone] / [About Device]. OPPO phone camera problem If the camera app in your OPPO phone won’t open, crashes, or shows a black screen, or you get an error message saying that the camera has stopped working, do the following: Step 1: Force close the Camera app If another app is actively using the camera in the background—such as a video call, QR code scanner, or social media app, it can prevent the camera from opening properly. To fix this close any apps that may be using the camera. If the screen shows black, force exits the [Camera] app. Tap the Multi-task or Recent Task key, find the [Camera] app, and swipe up to close it. Once closed, try reopening the camera to see if it functions normally. Step 2: Check and close if another active app is using the camera The camera can only be accessed by one app at a time. Close the app that is using the camera and try again. Tap the Multi-task or Recent Task key, find the app, and swipe up to close it. Step 3: Force restart the phone Press and hold the Power and Volume Up buttons for more than 8 seconds to restart your device or until you see the OPPO logo. Step 4: Clear cache and data of the camera app Temporary files stored by the camera app may become corrupted over time, leading to performance issues such as crashes or a black screen. Clearing the cache removes these temporary files without affecting your photos. If the problem persists, clearing the app’s data can reset the camera settings to default. For ColorOS 12 and above: Go to [Settings] > [Apps] > [App management] > [Camera] > [Storage Usage] > [Clear Data] > [Clear Cache]. For ColorOS 7.0 to ColorOS 11.1: Go to [Settings] > [App Management] > [App List] > [Camera] > [Storage Usage] > [Clear Data] > [Clear Cache]. Note: If the [Camera] app is not showing, on the [App list], tap on the two-dot menu on the upper right, then tap on [Show system]. Step 5: Allow permission for third-party camera apps to use the camera If the camera doesn't open in a third-party app, allow the app to access the camera. For ColorOS 11.0 and above: Press and hold the third-party app icon > [App Info] > [Permissions] > [Camera] > [Allow]. For ColorOS 7.0: Press and hold the third-party app icon > [App Info] > [Permissions] > [Camera] > [Allow] / [Allow only while using the app]. Step 6: Update third-party camera apps Check for an available update for the third-party camera apps you installed. Open the [Google Play Store] or [App Market] on your phone and check for updates. Apps with available updates are labeled "Update." Step 7: Uninstall third-party camera apps Check whether the camera issue started after installing a specific third-party application. Some apps may conflict with camera permissions or attempt to access the camera in the background, causing it to malfunction. If the issue began shortly after installing a new app, try uninstalling that app and then restarting your device to see if the problem is resolved. Step 8: Update the phone software Go to [Settings] > [Software update] / [System update] / [About device] and update your phone to the latest software version. * DO NOT root your phone yourself, for that might affect the phone’s system performance, and the warranty service will be terminated. Step 9: Perform a factory reset on the device Back up and transfer your data, then perform a factory data reset. Go to this link to factory data reset your OPPO smartphone. Note: Factory data reset will completely WIPE all the data on your phone. Before erasing all data, always make an external backup of your device because data cannot be restored once you wipe the device. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. Other articles you might be interested in: How to Detect/Calibrate Camera and Flash on OPPO Phone * Pictures, settings, and paths might differ from those of your phone, but that does not affect the description in this article.

Can't Receive Text or SMS Messages on OPPO Phone

Applicable products： Smartphones System version： ColorOS 15 and above，ColorOS 14.X，ColorOS 14.1，ColorOS 13.X，ColorOS 13.1 and above，ColorOS 13.1，ColorOS 12.X，ColorOS 12，ColorOS 11，ColorOS 7.X，ColorOS 7.2，ColorOS 7.1，ColorOS 7，ColorOS 6.1，ColorOS 6.0，ColorOS 5.2，ColorOS 5.1，ColorOS 5.0，ColorOS 3.X，ColorOS 3.2，ColorOS 3.1，ColorOS 3.0

Having trouble receiving SMS messages on your OPPO phone can interrupt communication and delay access to important information. This issue may be caused by signal problems, blocked contacts, SIM card errors, or messaging app settings. Understanding the potential causes can help you resolve the issue effectively. This guide outlines practical troubleshooting steps to help restore normal message reception on your device. Note: Check your phone's ColorOS version in [Settings] > [About Phone] / [About Device]. Resolve Unable to Receive SMS There could be a few reasons why you're having trouble receiving messages on your OPPO phone. To resolve this issue, follow the steps below. Step 1: Check for Spam and Blocked Numbers Priority should be given to confirming whether this part of the SMS or verification code has been intercepted by the phone. If it is a phone with ColorOS12 or above systems, you can refer to the following terms for confirmation: Go to your phone's [Messages] application > [Three-dotted icon] on the upper right corner of your phone's screen > [Block & filter]> tap on the [Three-dotted icon] on the upper right corner of your phone's screen > [Block & filter] and disable the feature. If you know someone is trying to send you messages, but you're not receiving those, check to see if the number is blocked. Step 2: Check and Confirm if the Phone is in 'Do Not Disturb' Mode If the 'Do Not Disturb' mode is enabled, it temporarily silences notifications, making it unable to receive SMS, calls or other alerts coming through. If all the above steps have been checked and the problem cannot be solved, it is highly likely that it is caused by the network/server side. You can follow these steps to troubleshoot: Step 3: Check the SIM Card Remove the SIM card and re-insert it using the ejector tool in the box. Try the SIM card on another device to check if the issue occurs. If you can receive messages on another device, continue the next troubleshooting steps on your OPPO phone. Step 4: Turn Airplane Mode on and off There are two ways you can turn on/off the Airplane mode. Control Center: From the top of the screen, swipe down to open the Control Center and then, tap the [ Airplane Mode] icon to turn it on and off. If you can't see the Airplane mode icon. Settings: Go to [Settings] > toggle [Airplane mode] to turn on/off. For ColorOS 11 to ColorOS 13 and above: Go to [Settings] > [Connection & Sharing] and toggle [Airplane mode] to turn on/off. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. Related article: OPPO Smartphone's Messages from Unknown Sources Feature * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

Can't Log in to Google Play Store or OPPO App Store

Applicable products： Smartphones System version： ColorOS 14.1 and above，ColorOS 15 and above，ColorOS 13.1，ColorOS 12.X，ColorOS 12，ColorOS 11，ColorOS 7，ColorOS 6.0，ColorOS 5.0，ColorOS 3.2

If you are trying to download an app, but the Play Store is not opening, there could be various reasons behind it. One possible reason is a poor network connection or incorrect date and time settings. To troubleshoot this issue, you can refer to this easy guide. We suggest trying these methods, but if the problem persists, do not hesitate to contact the Google Play Support team for further assistance. Note: Check your phone's ColorOS version in [Settings] > [About Phone] / [About Device]. Steps to fix the Play Store not launching If you're having trouble opening the Google Play Store on your OPPO phone, try the troubleshooting steps below to fix the issue. Check network connection Make sure you have a stable Wi-Fi or mobile data connection. Try browsing any website to confirm. Update the date and time Google Play Services sync with their main servers to send and receive data. For this to work, the time and date on your device must be set accurately. See How to Set Up Date and Time on OPPO Phone. Check if Download Manager is enabled Go to [Settings] > [Additional Settings] > [Application Management] > [All] > [Download Manager]. Once you enter Download Manager, tap [Enable] to enable the app. As you allow this Manager, it will start downloading apps from the Play Store. If it still does not work, you must delete or clear the data from the app. Clear cache and data of Google Play and Google Services Clear the cache and cookies on your OPPO phone per your phone's ColorOS version. See Clear Cache and Cookies in OPPO Phone for more. Remove your Google account and log in again If the issue still persists, try to remove and add your Google Account on your device by following the below steps: For ColorOS 7 to ColorOS 13 and above: Go to [Settings] > [Users & accounts] > [Google] > tap your primary Google account > tap the *[two-dot] / [three-dot] icon at the top right > [Remove account]. Open Play Store, and it will ask you to log in to your Google account again. For ColorOS 6.1 and below: Go to [Settings] > [Accounts and sync] > [Google]. Note: *The icons may differ per OPPO phone model but still the same path. Please refer to the actual product. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service, you can also contact OPPO Support so we can help and assist you further with your concern. Depending on your region, you may check if you need to book an appointment before visiting your local Service Center. * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

Why Does My OPPO Phone Keep Restarting

Applicable products： Smartphones System version： All system versions

Frequent restarts or unexpected shutdowns on your OPPO phone may indicate underlying issues related to hardware, software, or app compatibility. Common causes include system errors, overheating, faulty updates, or interference from third-party applications. Identifying the root cause is essential to restoring your phone’s stability. This guide outlines practical troubleshooting steps to help you diagnose the issue and apply the appropriate solution. Note: To check your ColorOS version, go to [Settings] > [About Phone] / [About Device]. OPPO phone turning off by itself If you've ever encountered your OPPO smartphone suddenly turning off by itself, then you might want to try the troubleshooting tips below: Water exposure Can the power button and volume button on your mobile phone be pressed? Has the phone been exposed to water or liquid recently? We recommend you go to the service center to get your device checked. Check for battery-related issues The battery loses capacity over time, causing the phone to turn off. Plug in your phone and let it charge for 30 minutes, then force restart it and see if you fixed the issue. A loose battery or damaged connectors may not hold the battery in place. If your phone has a removable battery, remove and reinstall it. Make sure the battery contact is good. For non-removable batteries, visit the OPPO Service Center for help. If your phone’s battery is worn out or aging, contact your local OPPO Customer Service Center to replace the battery. Phone Overheating Check the surrounding temperature. Your phone might restart or turn off in a hot or cold environment. Learn how to prevent your OPPO smartphone from overheating by reading How to Cool Phone Battery to Prevent Overheating. Check for defective hardware Check if the phone's buttons are stuck. Remove the phone case and check if the Power button is stuck in the button opening. If the button is jammed, take your phone to OPPO Customer Service Center for repair. Turn off the Automatic On/Off option Check if the Automatic On/Off option is enabled on your phone and turn it off. For ColorOS 13: [Settings] > [Additional settings] > [Schedule power on/off] > and check if your phone has been set up to turn off at a specific time; if so, then disable it. For ColorOS 12: [Settings] > [System settings] > [Schedule power on/off] > and check if your phone has been set up to turn off at a specific time; if so, then disable it. For ColorOS 11 to 11.3: Go to [Settings] > [Additional settings] > [Schedule power on/off] / [Automatic On/Off] > and check if your phone has been set up to turn off at a specific time; if so, then disable it. For ColorOS 5.1 to 7.2: Go to [Settings] > [Additional settings] > [Automatic On/Off] / [Schedule power on/off] and check if your phone has been set up to turn off at a specific time. Check for corrupted software or apps Perform security scanning. Go to [Phone Manager] / [Security Center] > [Virus scan] and scan for viruses, malicious plug-ins, or programs. Uninstall the recently downloaded third-party apps. After removing each app, restart your phone and see if removing that app solved the problem. If your phone won’t turn on, press and hold both the Power and Volume Down buttons until your phone enters Recovery mode. Select a language and then tap [Reboot]. Uninstall unused apps. Poor-quality third-party apps could cause a system glitch. Check if an application you installed has an available update. Open the [Google Play Store] or [App Market] on your phone and check for updates. Apps with available updates are labeled "Update." Note: The Phone Manager is in the [Tools] folder on your home screen for some OPPO devices. Close unused background applications Tap the [Multi-task] or [Recent Task] key at the bottom left and close the unused apps. You can also manually close them one by one by swiping them up. Detect and update ColorOS Go to [Settings] > [System updates] / [Software updates] / [About device] to detect and update your phone to the latest software version when prompted. Perform recovery software updates with SD card Download the device's latest firmware and perform recovery software updates with an SD card. Then, try to reboot the phone again. Read this article to know more about this method. Clear phone caches and plug-ins Clean your phone storage in Phone Manager or Security Center and see if the issue is solved. Go to [Phone Manager] > [Clean Storage] / [Clean up storage] > *[Clear All] / [Clean Up] / [End All] / [Clean]. * Depending on the ColorOS version, some will show [Clear All] / [Clean Up] / [End All] / [Clean] on the Setting path, but it is the same function. * The Phone Manager is in the Tools folder on your home screen for some OPPO devices. Factory data reset the phone If none of the above steps have fixed the problem, reset your OPPO phone to factory settings. Go to this link to learn how to reset your OPPO phone to its factory settings. If the abovementioned steps do not fix your concern, prepare your warranty card and contact your nearest OPPO Customer Service. You can also contact OPPO Support so we can help and assist you further with your concern. * Pictures, settings, and paths might differ from those of your phone, but that does not affect the description in this article.

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