I put in a NCell sim card into my iPad 2 and it works like a charm - I didn't even have to fiddle with any settings. Just pop in a sim card and it just works. I get full 3G service and the connection is much much faster than Subisu cable or ADSL internet. And it's great because it's smart enough that if there's wifi it connects to it automatically so you don't waste your mobile balance. I'm guessing NTC will also work since all iPads are factory unlocked.