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How to Change the Theme of My Google Contacts in OPPO Phone

Applicable products： Smartphones System version： No system version involved

Changing the theme of Google Contacts on OPPO phones can help reduce eye strain while using it, whether it's day or night. You can easily change it by following the steps below. Keep reading to find out how! Note: The availability of Google Communication Suite features varies per country/ region. Change the theme in Google Contacts On your phone, go to the [Google] folder and open the [Contacts] app > [Fix & manage] > [Settings]. Under Display, tap [Theme] and choose your preferred theme, from [Light] or [Dark] or the system's default. Related articles: Add Useful Details in Google Contacts on OPPO Phone How to Check Contacts on Google Contacts * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description of this article.

If Your OPPO Phone is Always On Speaker when Answering Calls

Applicable products： Smartphones System version： All system versions

If Your OPPO Phone is Always On Speaker When Answering Calls If your calls are being answered in speaker mode by default, and cannot be switched to receiver, there might be a system or hardware issue. Try the following simple steps below to fix that. Note: Check your ColorOS version in [Settings] > [About Phone] / [About Device]. Always on speaker when answering calls Follow the troubleshooting guide below if your OPPO phone is always on speaker when you're answering calls. Turn on/off the switch to the receiver For ColorOS 12 to ColorOS 13 and above: Go to [Settings] > [System settings] / [Additional settings] > [Gestures & motions] > [Auto switch to receiver]. For ColorOS 7 to 11: Go to [Settings] > [Convenience tools] > [Gestures & motions] > [Auto switch to receiver]. For ColorOS 6.0 to 6.1: Go to [Settings] > [Convenience Aid] > [Gesture & Motion] > [Smart Call] > [Mode Switching during Calls]. For ColorOS 5.0 to 5.2: Go to [Settings] > [Smart & Convenient] > [Gesture & Motion] > [Smart Call] > [Switch to Speaker for Calls] / [Mode Switching during Calls]. For ColorOS 3.2 and below: Go to [Settings] > [Gesture & Motion] > [Smart Call] > [Switch to Speaker for Calls]. Check third-party call-recorder app Check if any third-party Call Recorder app is installed on your phone and the automatic speaker is on. If yes, go to the settings of the third-party call recorder app and turn off the automatic speaker. Check your headset If sound comes out of the speakers even when headsets are plugged in, check the headsets for any damage, or check the headset jack for obstructions. Restart your OPPO phone Press and hold the Power and the Volume Up buttons for at least 8 seconds or until you see the OPPO logo. Alternatively, press and hold the Power button and tap/ slide [Restart]. Then, please check if the issue is resolved. Update system to the latest version Go to [Settings] > [Software Updates] / [System Updates] / [About Device]. Reset your OPPO phone to system settings Check this link to learn How to Factory Reset an OPPO Phone. Related articles: Fix OPPO Earphones Sound Comes From the Speaker How to Fix Low or Muffled Sound on Phone Receiver * Pictures, settings, and paths might differ from those of your phone, but that does not affect the description in this article.

How to Change Mobile Data Network Type on OPPO Phone

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 13.X，ColorOS 13.2，ColorOS 13，ColorOS 13.1 and above，ColorOS 13.1

Every network type has a certain performance, speed and capacity that contributes to enhancing your overall experience with your device, especially since some apps require a higher performance and reliability from your mobile data connection when Wi-Fi is unavailable. If you wish to change the network type on your device, please follow the guide we created below. Switch mobile data network type Go to [Settings] Select [Mobile Network] Select a SIM tap [Preferred Network Type] and select your preferred network type. Related articles: Mobile Data Network is Not Working on OPPO Phone How to Check the Mobile Data Usage of Your OPPO Phone OPPO Phone has No Network Coverage or Poor Signal * Pictures, settings, and paths might differ from those of your phones, but these won't affect the description in this article.

How to Send a Group Message on Your OPPO Smartphone?

Applicable products： Smartphones System version： No system version involved

How to Send a Group Message on Your OPPO Smartphone? You have an announcement, a quote, or some messages you want to send to a group of people. Rather than individually sending an SMS, your OPPO phone will let you send messages to multiple recipients. Check the easy steps here! Applicable to: All OPPO Smartphones. Send a group message Tap [Messages] on the Home screen, create a new message, and choose the recipients from one of the following lists: From Contacts: tick the contacts you wish to include in the group message, then tap [Add]. From Groups: tick the groups you wish to include in the group message, then tap [Add]. From Call Log: tick the ones you've recently called or who has recently called you, then tap [Add]. If you want to send the message to recipients who are not in your contacts list, tap [Message] on the Home screen, create a new message, enter a phone number, and tap [Done]. Repeat the above steps to add multiple recipients. After selecting the recipients, type a message, and tap [Send]. To view the recipients, tap the icon in the upper-right corner of the screen. If you can send messages but have issues with a group message For models of ColorOS 3.2 and below, go to [Settings] > [App Management] > [All] and find Messages. Tap Messages, then clear its data and cache. For models of ColorOS 5.0 and above, long-press the icon of [Messages] > [App Info] > [Storage Usage], then clear its data and cache. Restart the phone, and update it to the latest software version. Take out the SIM card and put it back in, and see if you fixed the issue. * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

Can I Use One SIM Card in a Dual SIM Phone

Applicable products： Smartphones System version： No system version involved

Can I Use One SIM Card in a Dual SIM Phone Do you own an OPPO smartphone with dual SIM capabilities but only use one SIM card? No worries! Your phone will still perform exceptionally well even with just one SIM. In this technical article, we'll explore the advantages of dual SIM phones, their functionalities, and why it's perfectly fine to operate with just a single SIM. Dual SIM Functionality Dual SIM smartphones, as the name suggests, can accommodate and operate with two separate SIM cards simultaneously. This feature is designed to provide users with enhanced connectivity options, the ability to manage personal and work contacts separately, or even use SIM cards from different service providers. How Does a Dual SIM Phone Work with a Single SIM Card If you possess a dual SIM OPPO phone but use only one SIM card, your phone will operate perfectly with the inserted SIM. The phone will recognize the available SIM and function as a single SIM phone, utilizing the inserted SIM for calls, messages, and data connectivity. Benefits of Using a Dual SIM Phone with a Single SIM Card Backup Storage: The unused SIM card slot can be a backup storage option for your SIM card. Having a backup SIM ready can be incredibly convenient in case of misplacement or damage to your primary SIM. Future-Proofing: Circumstances may change even if you currently use only one SIM card. Having a second SIM slot means you're ready to utilize another SIM if the need arises without requiring a new phone. Separate Work and Personal: If you ever decide to use the second SIM, you can easily have a work and personal number on the same device, providing more organized communication options. Related article: What is Dual SIM and What Are the Advantages?

Unable to Screen Record During Calls on OPPO Phone

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

In OPPO, we value our user's privacy. When attempting to use the screen recording feature during a phone call, a prompt "Unable to record screen because another app is using the microphone" will be displayed to safeguard your privacy even if the "Record microphone sound" setting is enabled for the screen recording feature. This measure ensures that no unauthorized access to your microphone occurs during a call recording. Why can't I use the screen record while on call Recording the audio during a phone call raises privacy concerns, and relevant policies state that call audio recording is prohibited. Related articles: How to Enable Call Recording on My OPPO Phone Call Recording Function Unavailable After ColorOS Update * Pictures, settings, and paths might differ from those of your phones, but these won't affect the description in this article.

Do OPPO Phones Have a Redial Function

Applicable products： Smartphones System version： All system versions

If you encounter a busy line when trying to make a call on your OPPO phone, you may need to wait for the other party to time out or reject the call, then manually redial the number again. Find out more about it below. OPPO redial function Currently, OPPO phones do not support the redial function. Therefore, you will need to redial the number if you encounter a busy signal manually. We apologize for the inconvenience this has caused. Please stay connected with us for updates. Other methods to call: Below are ways you can follow to dial a contact again. Manually redial the number Go to the [Phone] app, key in the number or search the contact, then tap the [Call] icon. Recent calls Go to the [Phone] app > [Recents] > and tap the [Call] icon next to the contact to dial the number again. Related articles: Fix OPPO Phone Call Issues: Can't Make or Receive Calls Call Getting Disconnected Automatically on My OPPO Phone * Pictures, settings, and paths might differ from those of your phones, but these won't affect the description in this article.

How to Reply to a Call with a Text Message on OPPO Phone

Applicable products： Smartphones System version： All system versions

When a sudden phone call reaches out to you, but you're unavailable to answer it, you can respond with a pre-written text message from the list. Read on below to learn how. Reply to a call with an SMS On an incoming phone call, tap [Message], then choose the most appropriate reply from the list. You can also customize the reply message. To learn more on that, check How to Customize Message Reply With SMS. Related articles: Call Getting Disconnected Automatically on My OPPO Phone Fix Incoming Call Not Showing on OPPO Phone Screen How to Enable Call Recording App on My 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 Make a Conference Call Using Your OPPO Smartphone?

Applicable products： Smartphones System version： No system version involved

How to Make a Conference Call Using Your OPPO Smartphone? Want to add more people to your phone call? Have a conference call on your OPPO phone. Check the requirement and the easy steps to make a conference call. Situation: You need to talk to a few people at the same time without leaving your location. Applicable to: ColorOS 5.2 and above devices. Conference call allows you to have a conversation or meeting with multiple people at the same time. Note: The conference call host may incur call charges for each call participant and long-distance charges for distant calls. Follow these steps to make a conference call: 1. Contact your carrier and enable the conference call feature. 2. When you're in a call, tap [Add Call] > Make another call. 3. Once the second call is connected, tap on [Merge Calls]. 4. Repeat the same steps to add more calls to the conference. You can merge up to 6 calls for conference calls including the host if your carrier supports the feature. * Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.

How to Blacklist a Contact and Block Numbers on OPPO Phone

Applicable products： Smartphones System version： ColorOS 14 and above，ColorOS 13，ColorOS 12.X，ColorOS 12，ColorOS 11，ColorOS 6.1，ColorOS 6.0，ColorOS 5.1，ColorOS 5.0，ColorOS 3.X，ColorOS 3.2，ColorOS 3.1，ColorOS 3.0

When receiving multiple calls from unknown numbers, it can be disruptive to your daily phone usage. Here is a way to block a caller ID in your OPPO smartphone that would recognize the blacklisted number and automatically reject calls from them. It's an easy tool to keep those unwanted callers out of your mind and lets you continue enjoying your OPPO phone! Read on! Note: Check your phone's ColorOS version in [Settings] > [About Phone] / [About Device]. Blocklist a contact on OPPO phone Know how to block a contact on your OPPO phone's Phone dialer app and Google Phone app: OPPO Phone dialer Block calls The Block calls feature helps you to prevent unwanted phone calls from reaching you. For ColorOS 12 to ColorOS 13: Open the [Phone] app > tap a contact, tap the [Setting] button and choose [Block numbers] to add it to the blocklist. For ColorOS 11: Go to [Settings] > [Privacy] > [Block & Filter] > [Block Calls]. Alternatively, go to and tap in the upper right corner > [Block & Filter]. For ColorOS 6.1: Go to [Settings] > [System Apps] > [Call] > [Block & Filter] > [Call Blocking]. Alternatively, go to [Settings] > [Security] > [Block & Filter] > [Call Blocking]. For ColorOS 5.1 to 6.0: Go to [Settings] > [System Apps] > [Call] > [Block] > [Call Blocking]. Alternatively, go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Call Blocking]. For ColorOS 5.0: Go to [Settings] > [Call] > [Block] > [Block Calls]. Alternatively, go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Block Calls]. For ColorOS 3.2: Go to [Settings] > [Call] > [Block] > [Block Calls]. Alternatively, go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Block Calls]. For ColorOS 3.1: Go to [Settings] > [Call] > [Block] > [Block Calls]. Alternatively, go to [Settings] > [Security] > [Block] > [Block Calls]. For ColorOS 3.0: Go to [Settings] > [Call] > [Block]. Rules available for blocking incoming calls: Block All Calls: You won't receive calls anymore unless there are calls from VIP contacts or white-listed numbers. Block All Calls from Unknown Numbers: The unknown number refers to an unsaved real phone number. Please be aware that when you turn this function on, you might miss some important phone calls from new numbers. Block Unknown Numbers by Region: You can block numbers from specific locations. Block One-Ring Calls: This ONLY applies to unknown numbers. Block Calls from Hidden Numbers: You can block calls made from private numbers. Note: The above rules may vary depending on the ColorOS version. Some rules may not be available on certain devices. Block messages The Block messages feature will let you control the text and MMS messages you will receive. For ColorOS 12 and above: Open the [Messages] app and tap on the [Three-dotted] icon > [Block & filter] > [Three-dotted] icon again > [Block & filter] > [Block messages] > choose which messages to block. You can also set [Custom blocked words] > tap on [+] icon to add > type in the word you want to block > tap [Ok]. For ColorOS 7.0 to 11.3: Go to [Settings] > [Privacy] > [Block & Filter] > [Block Messages], or go to the [Messages] app > tap the 2-dots icon in the upper right corner > [Block & Filter] > [Blocked Messages] > tap the 2-dots icon in the upper right corner > [Set Rules] > [Block Messages]. For ColorOS 6.1: Go to [Settings] > [System Apps] > [Messages] > [Block & Filter] > [Block Messages], or go to [Settings] > [Security] > [Block & Filter] > [Block Messages]. For ColorOS 5.1: Go to ColorOS 6.0. Go to [Settings] > [System Apps] > [Call] > [Block] > [Block Messages], or go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Block Messages]. For ColorOS 5.0: Go to [Settings] > [Messages] > [Block] > [Block Messages], or go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Block Messages]. For ColorOS 3.2: Go to [Settings] > [Messages] > [Block] > [Block Messages], or go to [Settings] > [Security] > [Anti-harassment/Fraud] > [Block Messages]. For ColorOS 3.1: Go to [Settings] > [Messages] > [Block] > [Block Messages], or go to [Settings] > [Security] > [Block] > [Block Messages]. For ColorOS 3.0: Go to [Settings] > [Messages] > [Block]. Set rules to block messages Keywords for Spam: Messages from unknown numbers containing particular keywords that you have set will be recognized as spam. Block Messages from Unknown Numbers: All messages from unknown numbers that are not in your contact list will be blocked. Note: When Block Messages from Unknown Messages are turned on, you might miss important verification text messages, as well as messages from people who you know, but are not on your contact list. Manage to block messages per SIM Note: This option is only available on phones using dual SIM cards. For dual SIM phones, while on the message blocking screen, you can tap SIM 1 or SIM 2 and customize the message blocking rules. Google Phone dialer Block calls and messages On your OPPO phone, go to the [Phone] app and tap the [three-dotted line] at the top right, then tap [Settings] > [Blocked numbers] and toggle [Unknown] to block calls from unidentified callers. Alternatively, you can add a phone number to block calls from it by going to the [Phone] app and tapping the [Three-dotted line] at the top right, then tap [Settings] > [Blocked numbers] > [Add a Phone Number] and enter the phone number you want to block, then tap [Block]. You can also read Block or unblock a phone number by Google. Related articles: How to Block Private Numbers? How to Block All Incoming Calls? How to Block Phone Numbers in Your OPPO Phone? * Pictures, settings, and paths might differ from those of your phones, but these won't affect the description in this article

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