For my notebook I use 3G network from Catcom

but what i have to do if I go out of the country ? (Thailand)

Can/or How to use it when i am in Singapore or Indonesia

It is only for network not for Phone calls

thanks

Unplug the 3g!!

I am not familiar with Catcom but you could buy a Truemove H prepaid sim and activate thier international roaming packages...

http://truemoveh.truecorp.co.th/international_services/roaming_services/entry/2240?ln=en

Thanks , what I see from Truemove .. it is not cheap

Better I buy a network 3G sim in the country where I go to, in this case Indonesia

I've done quite a bit of traveling around the world, and I've never found a roaming data package cheaper than getting a local prepaid SIM. The only time I rely in data roaming is when local prepaid SIMs are problematic (USA for example).

Speaking of USA, T-Mobile has an interesting thing where their subscribers get free 2G data worldwide, which is good enough for instant messaging and the like.

Thanks , what I see from Truemove .. it is not cheap

Better I buy a network 3G sim in the country where I go to, in this case Indonesia

I have tried fo buy a local sim card in Indonesia during my previous trip but it was difficult

First I landed with Airasia at terminal 2 which has not much international arrival and no shops to buy a local sim card

When I found a local sim card shop they only had large formats which did not fit in the slot my smartphone

What is the model number on the modem?