most people have been having trouble using their iphones with a gevey chip or a baseband unlock with ultrasnow which stops you all from upgrading to a new ios because you are scared of losing you unlock
WELL, thats over!!! with new factory Unlock for AT&T iphones you can a get a factory unlock ie you can upgrade to any ios without losing your unlock.
its so effective and it works perfectly and it immediately turns your iphone into an unbranded device.....
THIS UNLOCK WORKS FOR ALL AT&T IPHONES (iphone 4,4s and even the new iphone 5)

if you are interested and you wanna unlock your idevice.....
contact me.

BB PIN - 21ED444A
twitter @cleancode01
email - appleprokid93@gmail.com

thanks