Originally Posted by
Starblazer
Bangkok: Data/Texting worked OK on "TH GSM", switched to DTAC and coverage and speeds much better.
I've been using data in Bangkok (iPhone) for approximately one month. I've been auto switched from TH GSM to AIS to dtac every 7-10 days during that timeframe, with all three providing excellent coverage, and acceptable speeds for my purposes.
Not really using it for voice calls, so can't comment on that.