Extending Use of SIM Card In Thailand

I travel to Thailand 3 or 4 times per year andwill also extend the length that your SIM is valid
having a cell phone with a local number saves mefor.
a lot of money.  Local calls are dirt cheap andIn Thailand, for every 300 Baht (about 9 US
long distance calls back to America aredollars) added to your phone, you get one
inexpensive.additional month of usage.  My problem has been
All you need is an unlocked GSM tri-band orhaving enough months left on my SIM to keep
quad-band phone a Thai SIM card.  A SIM, ormy phone number for my next trip.  My trips
subscriber identity module, is that little wafer chipcan be three months apart or sometimes six
about the size of your thumbnail under yourmonths.  So I need to ensure that there is ample
battery in your cell.time on my SIM.
You can get SIMs in almost every country youThis trip I learned how to overcome this.  I use a
travel to and it only takes a couple of seconds toservice called 1-2-Call and all that has to be done
swap them out.is to have someone with an abundance of months
The problem with American cell phone carriers ison their phone that they can transfer to you.
that they lock the SIM to a specific carrier.  So,My girlfriend had a bunch of months on her phone,
you have to get it unlocked, a relatively simpleso she just called *140 and followed the prompts
task that will only cost a couple of dollars.  Youto transfer time a month at a time.  I had her
can try to get your service provider to unlockadd 8 months to my SIM card and it only took a
your SIM, but most likely you will have to be afew minutes to conclude the swap.  You can
long time customer with a compelling story to getchoose English or Thai and the instructions are
it unlocked.very easy to follow.  Just keep in mind that
The easiest way to overcome this is to buy a cellwhen they prompt you for "validity" this means
phone in Asia.  They are inexpensive and are nothow long the card is valid for.
locked to specific carrier.  New and second-handI also found that I can use the same number to
phone are readily available and the prices are veryswap money from my phone to hers.  I had a
reasonable.lot of money on my phone because I would try
The only real problem I have had is maintainingto increase the amount of months by adding
the same phone number in Thailand trip afterabout 1,000 Baht to my phone in hopes that I
trip.  The way it works in Thailand, is you getwould have enough time to last me until my next
your SIM, and then to add more money to it, youtrip.
go to the local 7-11 or Family Mart, and buy aIn the past, I would buy phone cards for her so
small, credit card sized, phone card.  You scratchthat she would have time and money on her
off a protective coating to reveal a series ofphone to call me when I am back in America. 
numbers that you input into your phone. This worked out even better.  She got money
Whatever denomination of Baht you purchased isadded to her SIM and I got time.  Definitely a
automatically added to your SIM.  The companywin-win situation.