The Nokia Lumia 900 has Wifi Tethering [aka Mobile Hotspot]
One feature that was annoyingly left out of the Nokia Lumia 800 at launch, was the ability to use the phone as a mobile hotspot and tether your laptop or other devices to it using Wifi.
Apparently the new Nokia Lumia 900 has the feature available out of the box according to GottaBeMobile:
The feature was notably absent on Nokia’s Lumia 800, but thanks to the additional time between the launch of the 800 and 900, it seems that the later launch had afforded Nokia’s staff to enable tethering on the LTE capable handset
Great news for phones to like to tether (like yours truly). Well done Nokia, now how about bringing it to the Lumia 800 and 710 too, eh?