So this is the first time I've had a phone with internet,i'm looking at the settings for mobile network. "Enable always-on mobile data" is ticked, does that means in the backgorund 3g is always running to check for new gmail, or facebook notifications, etc etc, should I turn this off to use less data allowance. I'm okay when I'm home because it will connect to my wi-fi. There is an option for "data roaming" which is off. what is this? Network mode set to GSM/WCDMA auto? So about this,just want more info so I my phone doesn't get the better of me lol