I just bought the IRRS from 3.
cut the sim to become microsim, stuck it in my ipad2 and "No Sim"
THen I noticed the user guide for the prepaid sim says "International Roaming Rechargeable SIM Card (2G)"
WTF?!? 2G? Either I cut it improperly (most likely) or it's not working cuz it's a 2G card. Gonna goto a 3 store after work and get it worked out. If they can't then I'll have to fall back on the rechargeable one intended for iPads (altho I'd prefer to roam for when in China).