I understand that in CA one can cancel service within 30 days. If you bring over a couple of iPhone 4 and get a new iPhone 5 from T-Mobile on the installment plan will T-Mobile completely reimburse the activation fee and void all future payments for the iPhone 5 as long as I return it in good condition? Are there any penalties or anything I should be aware of?
Also in order to keep my numbers do I first sign up with a new service (like Verizon or AT&T) and then cancel the service with T-Mobile?