Hold the volume button and the power button at the same time for few seconds.Spreadtrum factory test will display. press "vol. down" key select PCBA sinle test and press "vol.up". Now select "front camera" then press "vol.up". your front camera will work. Now select "Back camera" then press "vol.up". your flash light only work and not the back camera. Everything has been tested. CELKON fools have not come forward. There is general problem with the software corrupted throughout the world of CELKON. But they have not solved. CELKON camera NOT WORKING AFTER DOING ALL with SD without SD. Close CELKON. That is better.