My Iphone 4 won't turn on.what can I do? - 1

Randomly when I went to check my phone it wouldn't turn on… The screen is just black… I've tried charging it with different chargers and even tried plugging it into my computer… I've called Apple but it's $35 to get help. A lot of reviews are telling me to hold my lock and home screen down for 10-30 seconds but my lock screen is jammed so that doesn't help… Please someone tell me there's SOMETHING I can do? (not including buying a new phone)

Added (1). Please guys… I really need help with this!

Shout at it

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