There seems to be no way to hold/restore connection in a game. Tab out for something else important for even 5 seconds and it disconnects you entirely. There are AFK timers already built into the game, so why can't this work like literally every other relevant mobile CCG and just keep your timers active while you're tabbed out? I try to play on my bus commute but even bringing up my bus pass app for 5 seconds forfeits the match. Desktop is great. Stick to playing on that.