Before RebelSIM, I tried Furiousim, a.k.a YESSIM. With my trials, it worked with
(1) a certain carrier's USIM for less than ten minutes and then died completely. 3G calls in/out, 3G data.
(2) a certain carrier's SIM (but not the same carrier's USIM) on 2G network for calls in/out, SMS in/out. No data. Was quite stable for 3+ days.
For the record, all of the *SIMs I am testing are paid for OUT OF MY OWN POCKET. I do this as a hobby and I do not sell any *SIM solutions. O:)

