I am using a
nokia lumia 800 windows phone having
OS windwos phone 7.5 mango. Is there any way to use my phone as
wifi hotspot? if anybody know please share..
The option was originally disabled by Nokia, although they did recently enable it -- if you haven't done so recently, connect via Zune and install any updates if you have any.
Wi-Fi sharing is in the settings menu, under "Internet Sharing".
For best results, only use with the phone on external power - even if that is the laptop you're providing power from is running on battery.