Hello everyone. I recently purchased a Nokia Lumia 521 and have to buy a mini sim. I used to have another phone (I dont know the exact model) but it had a normal sim card. I am not the one who pays for my plan, and neither is my mother or father. My aunt who lives out of state pays for my plan. How would i upgrade my sim card? (the only thing i really know about the plan is my aunts name, my phone number, and i have the old sim card) It would be easiest to keep the same number as well.
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