In any event, the listing is for an unlocked version of the Nokia Lumia 800, which means you can pop in your SIM and start using it right away. Naturally, AT&T customers should take notice of this one seeing that the handset is compatible to work with the carrier’s HSPA network. Meanwhile, T-Mobile customers can still opt to use the handset with the carrier, but considering that it doesn’t support Tmo’s 1700MHz band, you’ll be surfing the web on EDGE speeds instead.
$649.99 cost before going through with something you’ll regret down the road. However, if you feel it’s a good enough investment, then don’t hesitate for a second to pick it up – even more when it’s one of the best looking Windows Phones out there on the market.
source: Amazon via The Nokia Blog & Unwired View