Friend I am also facing this same problem. I put my phone overnight charge then disconnected it in the morning 8 am (was working properly) then I noticed the phones battery percentage still stuck at 100% at 12 noon, I restarted my phone: It shut down but could not boot up, now I don't have access to fastboot or recovery, pressing the power button does nothing, whenever I connect charger the
Many people don't notice it at all. Some feel that "something's different" and a few suffer. App mentioned above fixes it for those unlucky who see/"feel" the PWM flickering. Btw. this is a generic problem of majority of AMOLED panels. A3 is not unique, Pixels, Samsungs and other behave the same.
If your MI A3 stopped working - and not switching on, please check this video and follow all the steps. MI A3 dead solutionThis might solve your problem (tem
Step 1. Download the Mi Unlock app to PC and sign in with your mi account that you have created on your phone. Step 2. Shut down your phone manually, and hold Volume down key and Power button to enter Fastboot mode. Step 3.
What to do if the screen of your Samsung Galaxy A3 (2017) started flickering [Troubleshooting Guide] How to fix your Samsung Galaxy A3 (2017) that’s popping up “Unfortunately, Messages has

You can do this with the following steps. Step 1: Turn off your TV and all connected devices. Step 2: Unplug the TV from the power. Step 3: Press the power button on the TV for 30 seconds. Step 4: Keep the TV unplugged for another 10 minutes. Step 5: Plug the TV back in and turn it on.

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mi a3 screen blinking problem