I got my t-mobile version iphone 6 from apple online store. It comes with a tmobile sim card inside the phone. I wonder is there any use of it with that sim? Does it comes with a number on that sim? Is it able to charge it with this? http://www.walmart.com/ip/Tmobile-3...bucket_id=irsbucketdefault&findingMethod=p13n Or I still have to buy the activation kit instead? thank you.