I can't get into the play store. Have had my s3 for a few weeks, and wanted to get the flashlight app. clicked on playstore, get a window that says "authentication required, etc, etc". It does not give me a clue as to how to go about that. The salesman helped me set up a gmail account. what more do i have to do? instead of being an enjoyable experience owning this phone, stressful things just keep popping up.