Iphone battrey rapoidly draining?

Yesterday i went out with a friend my iphone was 87 percent and by around 5.15 when i was on my way home it completly dies, i have tried turning off emails ect, it also comes up ith the accesory is not supported message if its not in a specific position when its charging, my phone is still in warranty, but i'm affraid if i take it to the apple store they will say its water damaged or something, the inly oossible contact it has had with water is a bit of rain, but nothing ever happened also about 1 week before the battrey started to drain my lock button became completley unresponsive, i still have about 1an a half years left in my phone conteact, what's wrong with it?

If the phone is the 5 or 5c/5s then take it to a local repair shop. But be careful as this may void the warranty.
Or get a new phone…

Well obviously if you got water in it then you will have to pay to get the problem fixed. Otherwise if the battery is defective they will probably just put a new one in for free.

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