Nokia Lumia 810 now free on T-Mobile's website with signed 2-year pact
The difference between the Nokia Lumia 810 and the Nokia Lumia 820 is the lack of LTE connectivity on the Lumia 810 (no LTE for T-Mobile, of course), the slightly larger battery on the T-Mobile model (1800mAh vs. 1650mAh), and the larger capacity microSD slot on the Nokia Lumia 820 (64GB vs. 32GB). There is also a difference in the sensor on the front-facing camera which is 1.3MP on the Nokia Lumia 810 and .3MP on the Nokia Lumia 820.
source: T-Mobile via WMPoweruser
Nokia Lumia 810 features
1. Whodaboss (Posts: 176; Member since: 18 Nov 2011)
Got this phone a month ago at Target for $60.00 and luv it! I knew this day would come, but it was time to replace my HD2.
3. Galen20K (Posts: 511; Member since: 26 Dec 2008)
Actually the best varient of the Nokia Lumia 820, best battery best microSD capacity and best ff camera out of all the versions. Yes it may look plain looking, but I actually dig the exterior looks vs the Att/Verizon version. This is coming from somebody w/ a GS3/Nexus4 daily driver combo.
4. cornerofthemoon (Posts: 505; Member since: 20 Apr 2010)
I just got one. It looks great with the optional cyan battery cover.