You can't... the activation lock is a security feature designed to prevent UNAUTHORISED use !
That is the iPhone 4 GSM. It was the first iPhone 4 released by AT&T.
Yes, one can use iPhone in any country having a GSM network but the iPhone should have been bought without any ATT or TMobile plan lock in the first case. The other option is unlock the iPhone before using any GSM SIM in it (NB: Donot upgrade the iTunes or any iPhone system software after unlocking as it will lock it again, eg. new OS 3.1.3 or latest)
Yes. iPhones have always been GSM phones. CDMA was introduced with the iPhone 4 and the 4S was the first iPhone to introduce dual band iPhones with GSM/CDMA antennas.
You cannot. Verizon = CDMA AT&T = GSM (network that houses the iPhone) CDMA and GSM are not compatable.
Yes, it is now. THe iPhone 4S is actually both GSM and CDMA.
No. The iPhone currently operates only on the EDGE (2.5G) network.
No it will not since Verizon uses CDMA networks and the iPhone needs the GSM standard.
how many price iphone 4 price in greece with gsm pakages
Only if the iphone is a GSM phone with a SIM card... Otherwise if it is CDMA then no, you have to activate the other iphone.
No. The iPhone 3GS is sadly a GSM only phone, so it cannot function on Sprint (or Verizon's) bandwidths.
No, Credo is on Sprint's network, which uses CDMA. AT&T is GSM. You can jailbreak and unlock the iphone and use it on any GSM network that uses SIM cards however. T-mobile is one option that comes to mind.
Unfortunately, an iPhone cannot be used on nTelos services due to they use a GSM network and nTelos uses CDMA.