as of the moment, Roaming service is only available for Globe postpaid and Prepaid...
wala pala itong kuwenta na tm sim niyo d pwede ma roaming.....
This is 1 year ago.. please refer to updates regarding TM Roaming below.
To activate your roaming service while in the Philippines
Dial *143#, select the following:
2. I-ON ang Roaming
You will receive a message to confirm your request for activation.
To activate your roaming service upon arrival abroad
Step 1: Turn on your mobile phone once you arrive at your destination. You will have a temporary signal good for 5 days and an SMS from TM.
Reply GROAM YES if you want to have signal beyond 5 days.
Reply GROAM NO if you want to deactivate it immediately.
If no reply, your roaming signal will be automatically deactivated after 5 days.