Can I use a blackberry on pay as you go if I want push email functionality, facebook chat and blackberry messenger? I haven't started my job yet so I think it's not possible to get a monthly contract.

Yes, all three companies offer prepaid plans for what you need. Around 300 to 350 baht per month. You can also get a postpaid from DTAC if you have a credit card from a foreign country for collateral for the first three billing cycles.

All three will do pay as you go, probably 80% of thailand is on PAYG so they would be shooting them selves in the foot..

I pay 250 baht a month with true for a BIS which includes all normal BB stuff and unlimited use of internet through the BB APN, not the fastest but ok for when no wifi

All three will do pay as you go, probably 80% of thailand is on PAYG so they would be shooting them selves in the foot..

I pay 250 baht a month with true for a BIS which includes all normal BB stuff and unlimited use of internet through the BB APN, not the fastest but ok for when no wifi

True's website says 690 baht/month.

http://www.dtac.co.th/blackberry/promotion/index_en.html

http://www.truemove.com/blackberry/en/pre_pay.aspx

http://www.truemove.com/blackberry/en/post_pay.aspx

http://www.ais.co.th/12call/en/pro-blackberry_package.html

http://www.ais.co.th/aisblackberry/tariff/