I'm with Virgin Mobile and i have 1 Gb data plan. I have used skype on the 3G network and my browser multiple times. When i go to my option and check my Network data usage on my iPhone it says I have 121 Mb received and 6.1 Mb sent. i also am registered with Virgin Mobile member lounge. I checked my Unbilled data usage on there and it sayd i only have 21 Mb received and 0.119 Mb sent. Can someone please clarify the difference and why my data usage does not go up from skyping on the Virgin mobile Lounge but it does in my option on my cellphone. The reps say to go by the website but it doesnt seem correct. Am i going to get over charged if it says i use 1.5Gb of data on my phone but on my Virgin account it says ive only used 250 Mb?