Activate Sim Card T Mobile Sprint. But when I do that my phone is showing the T-Mobile sim to be an Invalid Sim Card. If you want to use a new SIM in your Sprint mobile phone youll have to activate it first.

My father lives in a small town in southern Arizona. To find your phones serial number dial 06 and then send the call. Calls must originate on T-Mobiles US.
Device activation can be completed using one of two methods.
With Sprint we had really good service when we visited him. How do I activate my phone on the Sprint Network. If youve just gotten a new SIM Subscriber Identity Module card from T-Mobile and would like to get it activated quickly this article will explain the way. Currently there are two ways to activate a new SIM card.
