Why won't my iPhone charge anymore?

My iPhone won't charge anymore. Its not the charger, I've tested many. I think either the iPhone recharge thing is melted, you can't see any damage in there though. And no, its nothing blocking the charger. I think its the battery that is dead. I've done lots of stupid things that i think helped damage the battery;

1. Brought it with me in the shower (self-explanatori)

2. Used it while recharging, wich made it very warm and maybe it melted, or just broke.

3. I've only dropped it once, a long time ago.

4. I charge it every night

Around 12pm tonight my charger got weird, it stopped charging and started again over and over rapidly. It continued like this so I stopped charging it. Today it died, because it stopped charging completely, then i blew air into the port, and the stop, start with the charger started again, but it didn't charge enough to start the phone… Any help?

Well obviously the problem is inside the phone. Maybe the battery is just worn out, or it could be something worse. If the phone is still under warranty call Apple or bring it to an Apple store and see if they will fix it for free (but they probably won't do it free if they can see evidence that it got wet or was dropped). If Apple fixing it isn't an option, check for local places that do phone repairs and ask them to take a look. If it's nothing really bad they can just give you a new battery for maybe $20-$40.

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