I loaded one of the time-date stamp apps and it really caused havoc with my Samsung Galaxy S3. At first I thought I had a hardware issue. Whenever I took a flash photo shot, the phone would immediately turn off, and would not turn back on. The only way I could get the phone to turn back on was to plug it into the charger (even though the battery was still fully charged. Finally, I launched it in Safe Mode and worked with it all day without the glitch occurring, so I was able to narrow down the problem to the time-date stamp app I had downloaded. I deleted the app and no further issues. I also have a job where they want me to take time-date stamp pictures on site. I don't understand why the Smartphones have not added this option into the camera.