Sonyericson k750i cannot save images

Hi
Firstly have you a memory card inserted?
If yes, is there any problems reading files from it?
If yes, remove memory card and re insert, it may just be connections dirty?
If no memory card inserted chances are your camera settings are set to save to memory card.
To change this start the camera and go to settings/options.
Look for default save location. If it is set to save to memory card and you dont have one, that would be the reason why it is not saving images. Either install a Pro Duo memory card or change default save location to 'Phone'.
Hope that helps?