Unlocked Samsung Galaxy Nexus HSPA+ GSM Android 4.0 Phone with 4.65 EXPIRED
Runs latest Jelly Bean 4.1.2
Jellybean has been optimized for slicker performance (Project Butter), and includes Google Now, which is a competitor to Siri. Also note that this phone supports Google Wallet.
Siri vs Google...Fight
According to several forum posts, if you have a micro-sim card (used in iPhone 4/4S), you do not need a new sim or an adapter to use it in the Galaxy Nexus (which uses mini-sim card): just slide your micro-sim directly down the middle of the mini-sim slot in Nexus, and it should work.
This is a penta-band GSM phone for AT&T, T-Mobile, many prepaid providers, and the rest of the world. It is a world-phone in a very true sense because it's completely unlocked and supports all the major bands in use.
Galaxy Nexus Extended 2000mah battery. ebay [ebay.com] or cheaper here expansys [expansys-usa.com].
Please note that the NFC device used in Google Wallet and Google Beam need a compatible battery to function. A NFC-enabled battery costs more than the generics.
The screen is a pentile HD SuperAMOLED. It is very sharp, the contrast is great, the colors are vibrant, and it is very readable in the sun. Note that there are defects in the screen of some of the phones, so please look for any problems noted in this thread at XDA Developers. [xda-developers.com]
AT&T and T-Mobile both market their HSPA+ networks as "4G". So this phone will get you the non-LTE "4G" on AT&T. All of T-Mobile's "4G" currently is HSPA+.