Let me share my story, I'm FELIX - from Indonesia. Now: - My Iphone X 256GB, need to restart 2-3 times a day to know my actual real battery. My iphone suddently restart/shutdown by it selfs, once a day while i'm using it. (While i was making a call or i was chatting in whats app). After I charged my iphoneX to 100%, and i keep using it for 2-3 hours, suddently the battery indicator showed it was 10% (battery draining), and keep less in 10% for along time. I need to restart the iphone regularly, to know the real percentage, OCT 2020: my battery health was 84% 1 nov 2020: i change the original Iphone battery and become 100% (battery health). 3 NOV 2020: i installed the 14.2 IOS. starting that my iphone has the trouble. it happens with the 2 devices. (Mine and my Wife's iphone). We have the same problem now. Dear apple support, please help my iphone IOS. I am the loyal Iphone Fans. (I'm using Ipad Pro, Macbook Pro). i have upgrade it the new operating system, but it works fine. Only my iphone X has this trouble. I consider to buy the new IPhone 12, but i worry it will happend the same way. Please, need your help- URGENT. Hopefully the next 14.4 IOS or the new iphone can FIX this problem. Thank you. i wish i can send the screen capture to show this problem to apple support. )