There could be an app running in the background that is stuck, or crashed. Sometimes my Map app, or a game running can cause my phone to heat up. When my phone heats up, I force close all the open apps, so that they all close and none are running. This always makes my phone cool again. Also, It's good to restart the phone every few days to keep it running smoothly. Or, if you are in an area with poor cell reception, like 1 bar, the phone could heat up as it transmits at higher power to the cell towers to maintain a connection. Or, if you recently installed the latest iOS update, your phone will heat up for a day or two while it re-indexes all the files, and updates the phone. Under Settings --> battery, you can see what app is draining your phone the most.

Chronixx t1_j949pot wrote on February 19, 2023 at 3:10 AM

#1,865,763

I had this issue on iOS 16.3.1.

Got forced onto iOS 16.4 public beta but it sure fixed my issue, battery got better and is shockingly smooth to boot

ActiveRepulsive5832 OP t1_j9c2h0g wrote on February 20, 2023 at 8:49 PM

#1,889,727

Replying to Chronixx (#1,865,763)

so is it worth the beta? i “unsubscribed” from the beta when ios 16 was in beta, as it literally destroyed my phone and i had to have a tech store downgrade it and reset it for me haha

Chronixx t1_j9c5tqp wrote on February 20, 2023 at 9:11 PM

#1,890,077

Replying to ActiveRepulsive5832 (#1,889,727)

To me it was, but it’s because downloading the beta from a “stable” release is the closest thing to flashing the device with new software without totally restoring it and I didn’t want to go through the trouble of setting up my iPhone from scratch. I’m either going to stay on this software until iOS 17 or move to the stable release of iOS 16.4, depending on what people say when it releases.