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The 10 cities 4G is Active in...

These are supposedly the cities where it's available. I couldn't find a list on AT&T's website, so I make no guarantees about the accuracy of this:

●Bay Area, CA
●Greater Los Angeles, CA
●Northern, CA
●Chicago, IL
●Boston, MA
●Baltimore, MD
●Charlotte, NC
●Buffalo, NY
●Providence, RI
●Houston, TX
●Dallas, TX
●Puerto Rico
 
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Los Angeles here... And no HSPA+ speeds. No one really knows when it will be turned on. Level 2 tech support was hoping march 6th but who knows..... If it's not on in 30days I'm returning this phone !

As mentioned in post# 5, according to AT&T's 4G map, greater Los Angeles is supposed to have active 4G. I just went to my local AT&T store (I'm in Greater LA too) and here's what I got (see linky).
 
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i SEE H+ in the corner.. what does that mean?? im on 4g or 3g?

H+ = HSPA+ = "AT&T's 4G"

(...which is capped at 6Mbs?)

Per amazon.com Atrix page:

AmazonWireless: Motorola Atrix 4G Android Phone (AT&T)



AT&T 4G Network

att-2011_feat-4g-sm.jpg
This phone runs on AT&T's dual-band 850/1900 MHz 4G network (UMTS/HSDPA/HSPA+), and with HSPA+ you'll experience mobile data speeds up to 4x faster than ordinary mobile broadband--up to approximately 6 Mbps (download). AT&T has deployed HSPA+ to virtually 100 percent of its mobile broadband network, which enables 4G speeds when combined with enhanced backhaul (via Ethernet or fiber).
Backhaul is one of the major pieces of a telecommunications network. Think of it as the limbs connecting AT&T's cell towers with AT&T's backbone network that provides access to the Internet.
Coming later in 2011, AT&T will deliver a second layer of 4G network called LTE (Long Term Evolution) that is even faster than HSPA+ speeds.
In areas where either AT&T's 3G or 4G network is not available, you'll continue to receive service on the AT&T EDGE network, which offers availability in more than 13,000 US cities and along some 40,000 miles of major highways.
Note:
AT&T's 4G mobile broadband coverage is not available in all areas. 4G speeds delivered by HSPA+ with enhanced backhaul; availability increasing with ongoing backhaul deployment.
 
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