I like to use my tablet in landscape orientation. I’ve selected auto-rotate, then turned the tablet into the landscape position, then locked it there. The problem is it reverts to portrait within 15 minutes or so. It’s really annoying as I want to use all apps in the landscape position.
@HelenH2: Does the tablet revert to Portrait when you open a particular app, or navigate to a certain screen? Not all applications and features support Landscape mode (even the Home screen of your Galaxy A7 tablet defaults to Portrait unless Landscape mode is toggled on in the settings) so I just wanted to manage your expectations in that regard.