I use apps that need the screen to stay on indefinitely on your phones. The longest you have for keeping the screen on so far is only 10 minutes. That is nowhere near long enough. Your tablets have a 30 minute duration. That would be sufficient, but a setting to allow users to specify that they would like the screen to stay on until they turn it off would be better. The app I use has GPS navigation, but your screen still switches off after 10 minutes. I have to keep unlocking my screen again to continue. It is both inconvenient & VERY frustrating, because I am on a motorcycle & this then distracts me from the road.