I have an iTouch and an app called Text Free Unlimited. My notifications are on so when ever I get a message it is supposed to make a sound but it doesn't! When I turn my itouch back "on" from sleep mode, the wifi signal is not there in the top left corner and yes, I do have wifi where I am. On my friend's itouch it works fine. She hears the sound even on rest/sleep mode. And her wifi works even it's on sleep mode. I am not sure why... HELP!!!! What should I do???