After the update of android 11 my A71's battery is draining faster and without disabling fast charging option it has taken more than 2 hours to charge it from 15% to 95%.
Does your phone get heated during charging ? If yes, then try to keep the phone on a cool surface (screen down position) and then charge it. Keep in mind that the surface also don't get heated. Same was happening (though it was same before one ui 3, in summer time) to my phone, now, I charge the phone on black marbel surface which easily takes the heat and keep the phone cool and now my phone takes around 1 hour and 10 minutes to fully charge from near about 5% charge remaining.
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