Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

iPhone 12 Pro iPhone 12 Pro unusually warm when QI charging?

J

Jim Lahey

macrumors 68030
Original poster
Apr 8, 2014
2,754
5,734
Hello. Has anyone else noticed their 12 Pro seems unusually warm when QI charging? I understand it's expected that it will generate some heat but the new phone is warming up more than I'd normally expect. I'm mindful of unnecessarily degrading the battery so would appreciate the experience and thoughts of others. I hope they haven't compromised QI performance in the pursuit of MagSafe (which I'm not interested in).

Thanks.
 
BasicGreatGuy said:
It should get slightly warmer than checking plugged in.
Click to expand...

For sure but this seems way warmer than my previous iPhone on the same charging pad/s. I guess not really important but I'll keep an eye out for any similar comments here or elsewhere. Thanks for the input so far guys :cool:
 
Jim Lahey said:
Hello. Has anyone else noticed their 12 Pro seems unusually warm when QI charging? I understand it's expected that it will generate some heat but the new phone is warming up more than I'd normally expect. I'm mindful of unnecessarily degrading the battery so would appreciate the experience and thoughts of others. I hope they haven't compromised QI performance in the pursuit of MagSafe (which I'm not interested in).

Thanks.
Click to expand...
I noticed it yesterday with my car's QI charger. The phone got so hot that animations were stuttering. I was also using wireless CarPlay but it cannot be the reason. Anyway the phone wasn't really charged as it remained on the same percentage during a 1 hour drive. After checking battery stats I noticed the spikes on the graph and it looked like it was charging for a few seconds then stopped charging then started again. I was on 14.2 beta 4 now upgraded to Release Candidate but have yet to check it if it was the culprit.

edit: perhaps it's the magnets in the phone that act up. Found a thread that might explain:

forums.macrumors.com

Wiki: Qi Chargers not working with the iPhone 12/Pro/Max due to the magnets

EDIT: issue officially recognised by Apple I have the Zens Liberty Wireless charger and I noticed that it's not working properly with the iPhone 12. I think this might be due to the fact that it's a "AirPower"-like device that has multiple coils, and magnets (MagSafe) obviously interferes with...
forums.macrumors.com forums.macrumors.com
 
Last edited:
high3r said:
I noticed it yesterday with my car's QI charger. The phone got so hot that animations were stuttering. I was also using wireless CarPlay but it cannot be the reason. Anyway the phone wasn't really charged as it remained on the same percentage during a 1 hour drive. After checking battery stats I noticed the spikes on the graph and it looked like it was charging for a few seconds then stopped charging then started again. I was on 14.2 beta 4 now upgraded to Release Candidate but have yet to check it if it was the culprit.

edit: perhaps it's the magnets in the phone that act up. Found a thread that might explain:

forums.macrumors.com

Wiki: Qi Chargers not working with the iPhone 12/Pro/Max due to the magnets

EDIT: issue officially recognised by Apple I have the Zens Liberty Wireless charger and I noticed that it's not working properly with the iPhone 12. I think this might be due to the fact that it's a "AirPower"-like device that has multiple coils, and magnets (MagSafe) obviously interferes with...
forums.macrumors.com forums.macrumors.com
Click to expand...
Hmmm interesting. Well I suppose at least I'm not alone in thinking this seems unusual. Might charge mine by cable until more is known. I love Apple but I wouldn't put it past them these days to compromise QI in favour of their own, wired wireless...
 
Jim Lahey said:
Hmmm interesting. Well I suppose at least I'm not alone in thinking this seems unusual. Might charge mine by cable until more is known. I love Apple but I wouldn't put it past them these days to compromise QI in favour of their own, wired wireless...
Click to expand...
Yesterday I used the car's QI charger for about 10-15 minutes and it charged 5% and the phone wasn't hot. Apart from iOS 14.2 final the only change is that the phone is in a leather MagSafe case now.
 
  • Like
Reactions: Jim Lahey
There definitely an issue. 12 pro max gets so hot with qi 3.0 car adapter attached to car mount charger that it disables the camera flash/flashlight. I have to take it off the mount and let it cool down. I switched to 5v adapter, which won’t charge the phone to full, but will reduce the battery drain with screen always on. Ive tried 3 different mounts with 2 different qi car adapters. All had the same heat issue.
 
Jim Lahey said:
Hmmm interesting. Well I suppose at least I'm not alone in thinking this seems unusual. Might charge mine by cable until more is known. I love Apple but I wouldn't put it past them these days to compromise QI in favour of their own, wired wireless...
Click to expand...
Apple doesn’t make a car charging adapter. Or do they?
 
My MagSafe charger gets pretty damn hot. Not “overheat the phone” hot, but hot enough that I noticed and was concerned by it.
 
Yeah I’m also getting overheating issues with my 20w Apple Charger even with my new replacement of 12 Pro Max which also has the exact same issue. The front and back glass get so hot that I can’t touch/hold it. A bit concerning especially if starts causing burns. I don’t know if I should ask for another replacement or just wait for a fix.
 
DrCMD said:
Yeah I’m also getting overheating issues with my 20w Apple Charger even with my new replacement of 12 Pro Max which also has the exact same issue. The front and back glass get so hot that I can’t touch/hold it. A bit concerning especially if starts causing burns. I don’t know if I should ask for another replacement or just wait for a fix.
Click to expand...
You should stop using the 20w charger. The phone should not get so hot, that you can’t even hold it for fear of getting burned. That is not normal.
 
Apple_Robert said:
You should stop using the 20w charger. The phone should not get so hot, that you can’t even hold it for fear of getting burned. That is not normal.
Click to expand...
I know it’s not a normal thing to experience especially coming from 11 Pro Max which didn’t have this issue at all. I’m going back to the 10w and see how I go otherwise gonna have to take another trip to the Apple Genius Bar.
 
  • Like
Reactions: Apple_Robert
DrCMD said:
I know it’s not a normal thing to experience especially coming from 11 Pro Max which didn’t have this issue at all. I’m going back to the 10w and see how I go otherwise gonna have to take another trip to the Apple Genius Bar.
Click to expand...
Updating on using the 10w charger, it’s still happening on this charger as well. Here I go to the Apple Store again. I did notice that this overheating issue doesn’t seem to happen if I power off the iPhone which tells me it’s actually a bug in iOS 14 because I’ve tried restoring it and without setting it up (Welcome screen), the overheating is still present while charging.
 
DrCMD said:
Updating on using the 10w charger, it’s still happening on this charger as well. Here I go to the Apple Store again. I did notice that this overheating issue doesn’t seem to happen if I power off the iPhone which tells me it’s actually a bug in iOS 14 because I’ve tried restoring it and without setting it up (Welcome screen), the overheating is still present while charging.
Click to expand...

Its a bug. Pro Max on every qi charger I use. It is not overheating on MagSafe or the old Belkin charging pad. From what I understand it is an IOS 14 bug.

Ive used a 20w, 18w, 10w and a 5w charger (car mount with a 5w, 10w, 18w chargers) and it overheated on every one.
 
Mr.Scarface said:
Its a bug. Pro Max on every qi charger I use. It is not overheating on MagSafe or the old Belkin charging pad. From what I understand it is an IOS 14 bug.

Ive used a 20w, 18w, 10w and a 5w charger (car mount with a 5w, 10w, 18w chargers) and it overheated on every one.
Click to expand...
Wow and this hasn’t been fixed in iOS 14.3 betas according to my testing with 10w, 18w, 20w, 30w.
 
DrCMD said:
Wow and this hasn’t been fixed in iOS 14.3 betas according to my testing with 10w, 18w, 20w, 30w.
Click to expand...

It has to be tied to the magsafe magnets. 3rd party chargers are having issues. Magsafe puck overheated during the initial setup. However, haven’t had an issue since with that.
 
Apple_Robert said:
You should stop using the 20w charger. The phone should not get so hot, that you can’t even hold it for fear of getting burned. That is not normal.
Click to expand...
I second this... sounds like something wrong with the phone OR charging pad. I've never had a phone ever get so hot I was worried about burning myself.
 
9to5mac reported that one of its readers was told by Apple Support that a fix is coming in the ‘coming days’. This is promising since the issue is pretty widespread now.
 
Last edited:
  • Like
Reactions: TheYayAreaLiving 🎗️
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back