By default, calls are made over the 2G or 3G network, depending on reception. After enabling VoLTE (Voice over LTE) on the Oppo smartphone, calls are made over the 4G data network, which improves voice quality, speeds up call setup and reduces battery consumption
From there, hold down the Power off (Shutdown) button until you see a pop-up window. On TECNO and Infinix phones, you need to long-press the HiOS or XOS logo instead. Tap OK to reboot your phone in safe mode. While in safe mode, use your phone typically for several minutes to see if it turns off and on automatically.
Here’s how to fix OPPO RENO8 won’t turn on at all with a factory reset: Step 1: Enter your OPPO RENO8 into recovery mode after turning it off. To do this, you have to press «Volume Down + Power» at the same time. Keep holding these buttons until the OPPO RENO8 logo appears and the OPPO RENO8 restarts again.
Press and simultaneously hold the Power and Volume Down buttons to turn the device on. Once the Samsung logo appears on the screen, you can let go of the power button. Ensure you keep holding the Volume Down Button. Safe Mode will now appear at the bottom left of the screen. There are a few potential causes for a black screen on a OPPO A71, and several potential solutions you can try. Here are some things to try: Restart your phone: This is often the simplest and quickest solution for a black screen issue.
I tried hard to stop this warning message but I still don't have solution for this. If anyone know the best solution please share here. These are reasons why: It is annoy for my development It can
So, you should always check whether your charging cable is working perfectly or not. If it is not working then you should replace it with a new one. Check Your Charging Adaptor. If the cable is in good working order, the charging adapter should be checked next. The adapter itself could be the reason for the Oppo A74 not turning on issue. Reset Settings OPPO A71. At the very beginning you have to press the Power button to enable your OPPO A71 screen. Then unlock your device and open the Settings app. At this stage scroll down and choose the Additional settings option. Scroll down again, and on the bottom of the list select Back up and reset. Press Factory data reset. Instructions for troubleshooting and resolving issues related to Bluetooth pairing and connectivity. This guide is for the Oppo A71, which is equipped with a Li-Ion 3000 mAh, non-removable battery and a 5.2 inches, 74.5 cm2 (~68.2% screen-to-body ratio) display VbdP4m.
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    • oppo a71 not turning on