iOS 13.6 overheating and battery drain issues

I have had the overheating problem on 3 of my family iPhones using iOS 13.6 with all apps up to date. In our case it was the Google Maps app that was causing the phone to overheat and drain the battery as described by others. Deleted the app and the iPhones now run cold and battery usage back to normal. I have nothing against the Google Maps but perhaps the current version is doing something it shouldn't. Try this solution for yourselves.

I had the same problem with 13.6 on my iPhone 11 Pro Max.

I then had a chat with apple on this I have not realised that they have released a new version of 13.6.1 they told me to update once I did that my phone started to work as normal again.

Updated to 13.7 and battery was still draining. So I tried this:

• Settings > iCloud > turned off Contacts and Calendar
• Restart iPhone
• Settings > iCloud > turned back on Contacts and Calendar

It seems was a bad behavior of iCloud and the battery is back to normal it was before 13.5.

Don't upgrade to ios 13.6 is even worse on battery drain iphone 7 plus 256gb with new battery replaced about 1 year old . i had that same problem on 13.6 20% lost at 100% charge and sit on standby for about 7hr sleeping time. i was fine on ios 13.5 or 13.5.1 with just up to 10% loss battery power. i tried restore setup as new which i do on new version of ios release, like ios 12 upgrade to 13. problem still the same unusual battery drain. Decided to revert back to ios 13.5.1 better outcome loss of 6% of power from 100% charged. apple watch OS 6.2.8 on series 3 cellular is also draining within 9 hrs just by looking at the time. on watch os 6.2.6 i would get home from work and i would typically have 65-75% of power left but now 20-30% on watch os 6.2.8. if could, i would have revert the watchOS also, but can't. Hopefully new update 13.6.1 will fix issues. iphone 7 plus is the worst on battery drain than 6 plus, 6s plus and 8 plus did better on battery life on standby or usage.

Thanks for the feedback.

Uninstalling Music to get rid of whatever mangled data is causing it then reinstalling has proven benefit to many without the inconvenience of restoring the whole phone to factory.

Forbes has cited this too,

Of course there can be many rogue apps and not all show up in the battery usage.

Kyle46 - Well the remedy for instability is the same is the remedy for high battery use.

Safeguard your photos and data offline on a PC or cloud

Backup if you really want.

Reset to factory settings and set up as a new phone

Build up your apps direct from App Store and only the really important ones.

Reinstate the data

Do not restore from backup.

`Say goodbye your "social history" - it is just junk.

See how it goes. If it still restarts it is probably hardware.

(Usual Trolls please note: I said probably, and I am only talking to Kyle46)

Here is a guide for those steps:

How to back up your iPhone, iPad, and iPod touch

Restore your iPhone, iPad, or iPod to factory settings

Excellent news! I upgraded to 13.6.1, reset the network settings and my phone is now fine. BUT, I think that Apple throttled whatever they were doing in the background related to their cloud services to lower CPU utilization.

Back it up

Reset it to factory settings (Settings, General, Reset, Erase all content and settings),

Set it up as new, and if it still overheats to the point the warning comes on have it fixed on warranty.

only restore from backup if it runs cooler

My device was the same. Just power down the phone all the way off, then turn it back on, unlock screen, then we it down again. Wait 30 seconds and power it back on. I did this and all problems went away. Fast charging is back, no overheating, and great battery life is back.

This photo is showing 75% battery left after 7.5 hours heavy use. Yesterday I was at 8% at same time of heavy use.

13.7 just came out and it seems to have made the issue better for me. The phone isn’t getting hot, although the battery life doesn’t seem as good as it was prior to the .6 update. Could just be in my head though.

try this:

• Settings > iCloud > turned off Contacts and Calendar
• Restart iPhone
• Settings > iCloud > turned back on Contacts and Calendar

It seems was a bad behavior of iCloud and the battery is back to normal it was before 13.5.

I shutdown and restarted my phone twice and it seems to have resolved the issue.

I didn't want to reset the phone do I tried the restart twice suggestion and problem gone. No more battery drain no more overheat problem. Thanks

Yes, the issue is probably with the iOS upgrade. I'd recommend waiting for the next iOS upgrade when Apple fixes it. They come out at least once a month, but can come sooner.

Already found the solution for me. Reset all setting and no overheating after that. Maybe mine is that simple but idk for other user.