06-14-2014 10:41 AM
Try the following- Remove the battery.
Then remove the SIM card and SD card.
Replace the battery and try turning it on.
If it power up- then you have a bad SIM card.
Get a replacement from your phone company.
06-15-2014 12:55 PM
Last easy fix I can think of - Will it run while plugged into AC power?
If it runs on AC- then try a new battery.
Otherwise its time to take it to a repair shop or buy a new one.