Sony Ericsson K750i Troubleshooting
No matter what you do, you can't get your phone to turn on.
If your phone won't turn on, the battery could be drained. Try to plug it in and then restart.
If your phone still won't turn on, the battery could be bad. We sell replacement batteries for the Sony Ericsson K750i.
If the above fail to revive the phone the problem most likely lies in the motherboard.
There is an alien battery symbol and warning appearing on the display.
If your battery is dirty, remove the battery and clean the connectors with a soft brush or Q-tip moistened with any colorless unflavored alcohol.
Phone will not take photos.
If the memory on the phone/SIM card is full. Delete some photos then try again.
If the camera will not turn on/off, or the phone thinks the camera is always open or always closed. It is possible the camera switch is bad and must be replaced.