I think my iPhone is broken?

Well a while ago i went to check my phone and i noticed it wouldnt turn on, i thought it was weird because i checked a couple minutes before and it said i had 71% battery left but i thought no big deal so i put it back in my pocket. But when i went home i checked again and it still wouldnt turn on so i charged it. Its had about two hours of charging and it still didn't turn on so i plugged it into my computer but its acting like nothings plugged in. Now i'm really worried any ideas on what to do? Should i go to the Apple store and ask them? Is there some sort of special way to turn it back on?

Restore your phone: http://www.wikihow.com/Restore-an-iPhone

If you r within a yr of purchasing the phone u still have a warranty with apple. If you r within the warranty, you can take It in to the apple store and they will give you a new one. If you rnt, I wud suggest purchasing a new battery. There r plenty of videos on YouTube that tell you where to get it, and how to change it. It is extremely easy to change. Hope this helps

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