iOS 14.3 Battery Drain On iPhone 12 mini

Hi All,

I have an update here. Last night I changed my Mobile Data Option from 4G to 3G, turned on Low Data Mode, deleted the default Mail App of iOS and restarted my phone. These 3 changes were done after all the Battery Saving Tips on YouTube failed for me. To my surprise, I did not see even 1% battery drain overnight (7 hours of standby time). I am planning to test my battery drain overnight percentage with the above mentioned 3 changes for few more days and will post an update here (fingers crossed).

Hi All,

Last night again my overnight battery drain was 0% with the no changes in settings other than the 3 changes I had mentioned in my earlier reply. I guess, the overnight battery drain is now in acceptable limits. Most of the times it is either 0% or <= 5% during the seven hours of standby time. The only issue that I am facing is a 15 mins voice call takes 4-5% and using the mobile data for 1 min took 2-3% which is not acceptable.

Hi All,

Last night the battery drain was 4% for a seven hours standby time. It looks like there is no definite pattern. But what I noticed is the battery usage for a medium usage is fine with the only concern being a 15 mins voice call takes 4-5% and using the mobile data for 1 min took 2-3% which is not acceptable. I guess the new modem used in iPhone 12 series is the issue. Not sure if this can be fixed by a firmware update.