Camera Warning : Unknown error by Error Callback. I get this error when i try to use the camera. Any idea why this happen and what can i do?

SOURCE: Camera issues

as i think you must visit technician .... bcoz the camera strip is gone i think.... this camera strip may have gone due very much rough handling or due some accidents like falling on ground.....

or may be if not the phone s software is corrupted due to some virus attack .... the virus attack might have occurred from the pc while transferring datas like ringtones ,songs or transferring the data from the other mobile via blue tooth or infrared ...
we cant just say like that only bcoz we must have the check correctly, there may be possibilities like these... so visit technician....

SOURCE: When we turn on the camera it says "camera error".

its liquid damaged