Ive just purchased the Galaxy and concerned that i am connecting to internet when wifi turned off. When the 3G sign disappears from my phone I get a 'H' sign, what does this stand for? Also when the 3G is flashing red and green arrows does this mean you are connected to internet. i.e. when using an application? On some applications it doesn't flash but on others it does even games! I don't want to get charged for palying games! Thanks for your help!