I'll be in the above countries from 1FEB - 23FEB. My personal cellphone is not a triband (as is the case for so many in the US). My arrival city is Bangkok. Can I buy/rent a cell phone at the airport or in Bangkok for use during my trip. I really just want to give the folks back home a way to contact me for emergencies. It would sure beat having to type out a detailed itinerary with hotels and phone numbers. Thanks in advance.

GRF