Hi, What do you mean add a number? Like have multiple numbers on a sim card?
Hi cindylao. If I get this right, this is adding another number on your MyAccounts account (haha. ano daw? ) After you log in, click on "View my account details", you will be routed to the page where you can see the number already registered in MyAccounts and on top of that will be a green button with "+Add Account" Im just not sure if there's a limit of numbers you can add there.
Hope this helps.