Sony Ericsson W200i Troubleshooting
Your screen is not responding and remains black.
If your charger input works (as described above), you could have a battery problem. You will need to remove and check the battery to see if it's dead by using a multimeter (explained in guide below), which is commonly found at a hardware store.
If your battery and charger input are both working (as described above), that means the LCD screen is broken and will need to be replaced.
The volume is turned up and there is still no sound.
If the sound does not work, your phone's speakers may need to be replaced.
Your phone is turned on and the buttons do not respond.
If the keypad is unresponsive, it may need to be replaced.
Your phone case is scratched or cracked.
If your phone's case or plastic screen cover is damaged, you will need to remove and replace the case.