As of now, only users with Malaysian mobile numbers can register on Boost. If you have a Malaysian mobile number (either postpaid or prepaid), you will be able to use Boost to send Boost Credits to your friends.
If you are a Hotlink, Digi, Umobile, Tunetalk, Altel or XOX prepaid plan user, you will be able to top up your mobile credit through Boost and earn rewards while doing so.
If you are an Xpax user, you will also be able to subscribe to Celcom's prepaid products such as internet plans and add-ons. You will also be able to view your mobile credit and data balance, as well as validity.