First make sure that your phone is fully charged and that your battery is connected to the phone. If the phone is still not working you may have some problems. Follow this guide to replace the battery.
If your can hear your phone turn on, but do not see any picture. Then there could be a problem with your screen.
If your phone is not turning on and you have the charger plugged in, then it is possible that your charger is broken or the charger jack is broken. You may need to get another charger and try again.
If its hard to hear the person talking make sure your volume is at a reasonable level. If that does not work and you still cannot hear the person talking then there might be a problem with the phone’s speakers. Plug in headphones to the headphone jack to see if the problem is actually with the speakers. To see if it is your speakers follow this guide.
If you plugged in headphones to the audio jack and do not hear sound, then it is possible that either the audio jack or that the headphones are not working properly. If you get another set of headphones and the problem still remains, make sure you’ll volume is turned to a reasonable volume. Otherwise, there could be a problem with the audio jack.
The logic board for your screen is damaged and must be replaced. To replace it follow this guide.
The screen is cracked or damaged and must be replaced. To replace it follow this guide.
The keypad could have a bad connection or be out of place. To replace them follow this guide.
Look to see if the antenna is broken or damaged. If the antenna is broken or damaged then the antenna needs to be replaced.
If you have your phone on vibrate, but it does not vibrate then there may be a problem with your vibrating motor. To fix it follow this guide .
If your camera is broken then follow this guide to replace it.
