I bought an iPhone 5 a couple months ago on recommendation from members here. It's great, except there seems to be a Vampire here somewhere. I don't know if it's the iPhone software or something on my carrier's end, but my phone seems to "leak" (use) about 100-120 kilobytes of data per hour, even when I'm not using it. This adds up to about 2-3 MB/day, which is annoying, because I am on a budget T-Mobile plan that includes only 500 MB/month before bandwidth is throttled to EDGE (dial-up level & painfully slow) speeds. I only use my iPhone's data for e-mail, twitter, facebook, reading news on NPR's app (sometimes), and tapatalk when I am away from home during the day. I deliberately avoid visiting websites in Safari or streaming any kind of music if I'm not on WiFi, in order to preserve my data allocation. Vampire data use is very annoying. If I don't look at my phone for a couple hours, I hate seeing the data use meter go up by a Megabyte when I haven't done anything with the device! :cursing: Is this common on iPhones? Edit: I am running stock iOS 6.1.4. Therefore, there is no jailbreak or sketchy apps loaded.