I have the SGS III and it works without restart. Basically you go forward in time and the game updates, I usually skip 3-4h and all it takes is going in and out of the game - make sure your wifi is off. Except when you cross the 00AM. Then what you need to do is automatic time and it gives you new coins. Otherwise I make like 20k coins a day if I am dedicated enough.
Please add me, I send gifts and stuff daily: