Ridiculous battery drain - iPhone 13.3.1
My iPhone battery is draining 15% or more every 5 minutes. It does seem to drain faster with Safari app open.
It’s even draining while my phone is turned off at night. It was at 60% when I turned it off last night, and when I turned it on this morning it had drained down to zero so I has to plug in the charging cable. This has happened several times, which it had never done before.
My battery capacity looks to be okay.
I did a complete factory reset & restored my backup from iTunes, and it is still draining rapidly.
What is Apple doing?
iPhone 6s