I recently biught the Itracker 2 (TK-102B)on ebay and now trying to get the cheap sim card and service someone told me about. My memory fails me. So please let me know who you use for service? Simple Mobile? H2O? Or someone else. A guy at the airfeild where I fly said he bought a pay as you go for $10 that was good and usable for up to 90 days and basically costs him $3.33 a month so who is it? Please help as I want to do tis asap. Thanks!