Battery drain in ios 14.2

i updated my iphone 7+ to ios 14.2 and now i have battery drain problem and it takes long time to be charged and warmup during charging
  • My iPhone SE (1st generation) has started draining fast since iOS 14. With iOS 15 it is not doing better. I suspect the drainage is worse the days after an update. According to the service center, the hardware is fine, and the 86% max capacity is still a good one.

    Paolo

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Same, I just downloaded the new software 14. Yesterday, and I have a new battery from my 6s. I would go two days from not charging my phone. Now it’s every 15 mins. What is this crap?
I have an iPad Pro
and battery life is horrible now, at maximum brightness it drops 1% in less than a minute, making it barely usable outside.
not a good experience as my first apple product.

i just dont get it why apple keeps putting this small batteries on iphones saying they dont need a bigger battery because of ios optimization its crap my samsung with 3,300 mah battery lasted way longer way longer than my iphone xs