Can someone help me understand my options? I have 2 phones: a Droid Razr and an iPhone 4S on my account. Both are eligible for upgrades. I want to add an iPhone 5S on a new line. Transfer the number that is on the 4S to the new 5S. Then i want to keep the 4S in my account but port my Dad's Tmobile's pre-paid number to it. Is that doable? Will I lose the upgrade eligibility on the iPhone 4S?
I'm so confused!
thanks!
Tom