Go to settings: cellular data: select carrier: T-Mobile: it gives 3 choices 1) add a line to an EXISTING account, which if you click it then asks for phone number (this is what apple support told me to until it showed one HAS to enter phone number 2) PREPAID Plan 3) Transfer service. There is no way to add a regular tablet data plan. Apple/t-mobile
promotion is not qualified by prepaid plans. Only postpaid data plans. I cerrtainly wouldn’t be interested in a prepaid plan where the 200 promotion wouldn’t apply.
promotion is not qualified by prepaid plans. Only postpaid data plans. I cerrtainly wouldn’t be interested in a prepaid plan where the 200 promotion wouldn’t apply.