Share your experience!
Solved! Go to Solution.
Try settings-apps-all-camera,force stop and clear data.Restart your device.
Nope,it will only reset the camera app.
Strange,try to boot in safe mode:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008
You have to download a file manager from google play and explore whatsapp folder.About the camera,I think you should try a software repair.