AThere is a huge huge battery drain issue on my S21 plus after updating to one ui 6.1. I think this should be rectify on next update. Previously, 95 charged battery was enough to run the whole day, but now it's not enough to run entire day. Ihave to charge it again.
Hi, have u factory reset your phone after the update? Sometimes, residual system errors can persist and run in the background and drain the battery with no indication. It's advisable to do a factory reset after any OS upgrade to ensure that the phone runs smoothly.
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