My IPhone 4S is not charging it just says 10%?

I've tried to charge it over night dosent work so i tried it through out a day and it still will not work. It charged once but then it goes back to 10% after a while. I don't know if this a bug i can fix or my phone is just broke. I did drop it once and it did crack a bit.

Try turning it off and back on. If that doesn't work then maybe your charger could be broken?