Samsung Apps Hold Mode

I’ve just had my app rejected from the Samsung store as the timer ‘Does not pause in hold mode’. I’ve not got any Samsung Galaxy hardware to test on. Does anyone know what hold mode is and how to deal with it? Is there any way of simulating it on a non-Samsung device?

My guess is that I need to implement ‘applicationDidEnterBackground’ in AppDelegate but it would be great if someone could confirm this as the Samsung review process is really slow.

btw each game takes about 10 seconds so you’d have to be really impatient to pause in the middle of a game!