There is no special setting to activate international setting however please note the following:
1. Postpaid - most postpaid sims are already activated for international roaming but to be sure you may call the roaming hotline at +63 (02) 7301212 to check if your account's roaming service is already active or to request for roaming activation. Please do this before leaving the country.
2. Prepaid - Just dial *143# to activate your International Roaming. Activation should be done at least 24 hours before departure. You'll receive confirmation thru text once your International Roaming is activated. Aside from dialing, you can also text GROAM ON and send to 2884 to activate the roaming service. If you plan on having your roaming service active only for a specific time period, send GROAM ON <START DATE mm/dd/yyyy> <no. of days> to 2884 (i.e. GROAM ON 09/15/2008 28 and send to 2884).
A client of mine had activate roaming thru 143 and had received confirmation. Now person is in USA ,Los Angeles but roaming is still inactive . Please check tel 09164071305. Thank you for your help.