Why does my apple iPhone charger keep overheating?

Whenever I plug my phone in, I worry about whether it's going to die because I plug it in around 5% and a lot of the time my charger will overheat and stop charging even though its plugged in. So I'd have to unplug it for a bit and wait for it to cool down while my phone is dying. When I touch the charger it's always super warm. How do I fix this? Or is it just broken?

Is it possible to back-up content that you didn't buy on an iphone?

My friend gave me her old and broken iphone. After fixing it up a bit, I was told to unlock the phone I would need to erase all the content first. Is there a way to back up the content that I didn't buy?

Added (1). I've already paid for the unlocking service. All I need to do is erase the data and I'm good to go.

Any iPhone apps that you can?

Okay so I want one/some free app(s) that you can video chat with strangers or like a website that can do the same but with an iPhone

IPhone 4s screen black and power button broken

My iPhone has went fully black and won't turn on again. I know that to turn it back on you need to hold down the power and home button, but my power button is broken and I have been using assertive touch as a substitute for the power button. Does anyone know how to turn on my iPhone without using the power button?

Btw I have already tried plugging it in the the computer and into the wall.

School clothes or an iPhone 5?

I'm 15 and I've been given the choice of school clothes or an iPhone 5 and I've been working toward the iPhone for the longest time now and my current phone is *** but I care a lot about how I look too so now I'm stuck