I just got my iphone 4s with Koodo. I have 500mgs and i only use facebook and like foursqaure but even if i just check facebook for a minute it uses .5 of a mgb. why is that? is there anything i can do to conserve my data? I always close my apps by tapping the homescreen button twice. it bothers me that i can hardly use my phone and my data plan will be gone.