Iphone got really got...why?

[Poat84]

This morning I woke up and I checked my phone and I left my wifi on over night and my battery was almost dead. So i plugged my phone in like I always do and about 15 minutes later I get a text message from my friend and I grab my phone. When I hold my phone i realize really fast my phone was extemely hot and the front of the phone was just as hot.
I've seen reviews and reports of an "Exploding iphone" so i unplugged my phone for about 30 mins. giving it time to cool down. I plugged my phone in again and now an hour later its still plugged in and it feels normal (not hot) and works fine.
How come it did this?

 

[FoxMcWeezer]

I hope my iPhone never gots got.

 

[Poat84]

lol in a rush to type it up, im at gym

 

[-aggie-]

The phone can get hot when charging. As long as it's fine now, I wouldn't worry about it. If it constantly happens, consider getting a replacement battery.

 

[Poat84]

The phone can get hot when charging. As long as it's fine now, I wouldn't worry about it. If it constantly happens, consider getting a replacement battery.

I understand, Thanks!