Power button wont power on/off

clean battery terminals with a pencil eraser then recharge phone for about 2-3 hours..nothing happens? call 18883221122 ask for replacement phone or battery..will be free if under warranty or you will be offered a discounted replacement phone..im a customer support representative.......

Hold power button and volume up button at same time. while plugged into a charger.

its a hardware problem from your power button and causing some shortages so your phone wont open up. if you know how to disassemble your iphone you can probably fix it but be careful if your going to disassemble it make sure you dont loose some parts and tear the flex cables :)

Dude take off the case like your about to take off the battery out.Check the top of you phone if the left piece of your phone is gold it broken.

Hello,

This will happen when the battery has become completely drained. Plug it into the wall using the A/C adapter and allow it to charge for a while. If it still won't power on, hold the sleep button (on top of the phone) and the home button for about 5-6 seconds for a soft reset. When you plug it in you should see the symbol of a drained battery on the screen as it charges up.

Its a problem in the Power Button
It may be stuck ,it needs to be released,try to release it by some pin ,if you couldnt ,you need to send it to a repair store.

I accidentally dropped my phone in water and then the power button (red) wouldn't work. But then I took out the battery, plugged it in the charger, and then replaced the battery while it was still plugged in. It worked!

Mine turns on when I plug the charger into it. Have you tried that?

plug in the phone to charger. after you see the verizon sign, wait two seconds and unplug it quickly. it should turn on.

If the phone is unable to turn on, even if the battery is fully charged it really needs service.