Nokia’s first Windows Phone, the Lumia 800, has gained Internet Sharing in a recent update.
This is a fantastically useful feature if you have a data plan that includes a reasonable amount of data transfer. For example, perhaps you bought one of Google’s great value Nexus 7 tablets, reviewed here. This is Wi-Fi only, but combine it with a smartphone hotspot like this one and you can be online anywhere.
One snag is that the Lumia already has short battery life and this will drain it even faster, if enabled. If I am stuck in an airport and can find a mains point, one workaround I use is to attach the phone to a laptop via USB so that it continues to charge while you are online.
This feature removes what was to me the biggest flaw in the Lumia 800, which is an excellent phone. Unfortunately too many customers have had technical problems, the worst of which is the will not charge bug that is one of the most-read posts on this site. I have not experienced this myself for a while, so there is hope that Nokia has fixed this one too.