iOS 14.3 Battery Drain On iPhone 11

iPhone 11 and later models, battery performance --> About the battery and performance of iPhone 11 and later

Hmm mine as well dude. Idk why, but the 14.3 upgrade seems like a fail to me. As the sender notes, my IP 11 usually last for 2 days as well, and that is definitely NOT a battery or device fault, but the IOS as I have never had the issue with ios 13 or 14.2.

and its so funny that the battery drains on standby mode and that I have to be always on low power mode using 14.3, meanwhile I didnt need to do this with the latter IOS.

and FYI my battery health is 98% of 7 months usage, so its def not from there.

otherwise the issue would have been persistent since the first time I bought the phone 😂

so annoyed with the new update.

I had the same issue with my iPhone 12 mini and after applying all possible battery saving tips there was no improvement. All I did was to change the mobile data option from 4g to 3g, deleted the default Mail app of iOS and restarted my phone. This greatly reduced my overnight battery drain. You can give it a try.

Hey dude, we got the same problem, I just posted the same question after you.

And it's more serious. It takes me almost 70% and I just put it there.