Interesting to read all of the hate for TrueMove. I use TM on a pre-paid SIM - voice and text only - and haven't really had any problems. Granted, I've only used it in Bangkok and Chiang Mai so it may be that coverage in outlying areas is where it's really bad though I have had a couple of calls start to break up here in CM. Huh.
For those of you who know more about such things than I do - can I buy an AIS pre-paid SIM (for example) and swap it into my cheapo $30 Samsung "candy bar" phone that currently has a TrueMoveH prepaid SIM?