I'll repost my post from the "Iphone upgrade plan causing headaches" thread here if it helps...
I'd strongly recommend you to be ready to pay upfront, but who knows, maybe you will get lucky...
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So, I am a T-mobile customer on a prepaid plan, and had the appointment to purchase the iphone 6s and the IUP today. When time came they entered my account details and got back "you are not authorized to view this account". The Apple person helping me went to talk to the store manager and he said prepaid plans are not eligible for IUP, so they brought me a postpaid plan activation kit with T-mobile ($70/month or something) and told me I could get on the IUP by signing-up for that on the spot, or otherwise I'd have to just pay full price for the phone. I paid full price for the phone.
If prepaid customers are really ineligible, the information on the IUP on Apple's website is misleading at best, and dishonest at worst. Seems like a simple scam orchestrated with providers to get more people on their postpaid plans.
It also appears some people here with prepaid plans managed to get on the IUP, so it may vary with store management competency. Anyway, it would be great if someone here could clarify which type of plans are actually eligible for the IUP.
If I was a victim of a confused store manager, I would really like to still sign up for the IUP if T-mobile pre-paid plans are eligible. Kinda sucks to spend $1000 on a new gadget and leave the store with a sour mouth...
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