iPhone Early Termination

Hey, Everyone!
This summer I got an iPhone for my birthday...so we go into that AT&T store and my dad decides to give me his 3GS and used my first upgrade to buy himself a 4. The 3GS almost 2 years old, and has been used ALOT. Now the battery and performance has gone down, substantially...
Now the contract for his line is almost up, and I will be using it to get an iPhone 4S or the one that is released in 2012.
I was just wondering if I would be able to use his upgrade?

P.S. I called *639# on his 4, and it said he is eligible for an early upgrade with an $18 fee (which I would be more than happy to pay...)

P.P.S Mine said I would be eligible in March of 2013

Any responses would be helpful!! :Blushing:

Yes, you can use his upgrade when the time comes, though I would count on him wanting to use it for himself when the iPhone 5 drops and you getting a handmedown at that time.

Also… have you tried a hard reset to try an fix your battery issues? There's a simple way to check if it's needed.
http://www.mac-forums.com/forums/ip...ttery-life-shot-heck-4-3-5-a.html#post1279370

Instructions for doing a hard reset:
http://www.mac-forums.com/forums/io...-draining-after-icloud-setup.html#post1347330

AWESOME! Thank you