Please clarify your exact situation.
1. If you are presently a Globe postpaid subscriber and roaming in Canada and would just want to avail of a postpaid promo for your present subscription, you may want to dial *143# toll free and select Roaming promos to register OR for other concerns, promos and to further assist you with these, you may call +6327301212 toll free using your Globe Mobile.
2. If you will avail of a new postpaid subscription because of a phone promo being offered by Globe, then you would have to show proof that you can be billed in the Philippines aside from the usual valid IDs and proof of income. Please note that almost all phones issued by Globe are network locked.
and, canada roaming requires a quad band hand set, but 3G works well enough