Just curious when abroad and only on wifi, I'd I leave my phone at the hotel while still on wifi, is there a chance I will not receive the message at all? Because if your iMessage doesn't get delivered within a minute or so, it automatically sends as text message. So if someone sends me an iMessage, and my iPhone is asleep, will I not receive until I turn regular cellular data back on? Is there a way to keep wifi always on, even with the screen locked to ensure delivery of an iMessage to me? My phone is jailbroken if that makes any difference.