I got this app called "screen off and lock" I DON'T WANT IT! I went to the play store to figure out how to uninstall it. It told me too go to settings, select location and security, select device administrator, then uncheck the app. I clicked the uncheck button and it took me to a screen and it had a button that said deactivate. I clicked it but it wouldn't do a thing. So now I want to delete SOME apps by resetting my phone but I don't want to lose ANY pictures! is there a way?