Iphone 6s heats up fast

For some weird reason my iphone keeps restarting and i can feel the iphone heating up all of the sudden. I turned it off and it cooled down quickly after 10 mins.

after turning it on for like 30secs it is already hot all of the sudden then my phone restarts again.

is it a battery problem?

Something is defiantly wrong with your phone. I would recommend going to a cell phone repair shop and have them check it out. If you got a warranty, you may be able to replace it.

If have case over phone that can make the phone overheat for sure. Also could be defective battery

Where is it hot? It sounds like a battery problem, and if you're phone isn't damaged from being dropped, you can get it fixed for free if it's under warranty

Thanks for the replies! I had it checked in a mac store.
1) the heating is just normal. I just never noticed it before… I just overreacted when i felt the heat for the first time and realized it on the day my phone started acting up.
2) the restarting problem is a software problem. Apparently it happened because of the some failure of downloading/updating the new iOS properly. Everything is fine now. Sad part is that i lost all my apps since it was restored to its factory settings. Good thing i had the cloud to restore most of them like phone numbers.

  • Why does my iPhone battery die so fast? I have boost magic, which is supposed to help my battery last longer, and I kill all my apps when I'm done using them. I go from 100 at 8am and I'm at 60 by 9:30am. And I hardly use it too, just to look up information quickly and I just set my phone aside. I let it go down to 20% battery and let it charge over night. It just started doing this recently. I also keep my brightness to pretty much 0 with the auto brightness on. And it still dies fast. What can I do?
  • My new iPhone 6 heats up when I use it? I got an iPhone 6 last week and I felt that the back of the phone gets hot when I use the phone. I thought it was a faulty one so I exchanged it for a new one, and the same problem happens: It heats up! Especially when I use Mobile data (3G/4G). I have turned of location, Bluetooth etc but it still gets hot, even with a little usage
  • My iPhone over heats when it's charging, should I do something about it? My iPhone has been overheating when ever I charged it or if I have been using it for a while and I'm not sure if I should do anything or not.
  • My battery life on my iphone 4 is too fast? It's like 18% before I go to bed and when I wake up it's 3%. Please don't tell me to update bc I won't. Do you have any tips?