Did you know that you could connect your laptop to the internet through your T-Mobile wireless phone? Connecting a laptop, or any other portable device, through your T-Mobile phone in order to use the internet is called tethering. Tethering will allow you to use your phone as a wireless hotspot. This is a great feature to have when you are traveling or any other time that you would not have wireless access using your laptop. Best of all, T-Mobile offers this service free to all of their customers with a cellular plan.

Yes, much to the dismay of your ISP, an Android device can be used for "Tethering" or as a mobile WiFi hotspot. Simply go Settings->Wireless & network settings -> Tethering & portable hotspot.

EDIT: This only applies to Android 2.2 and above.

Yes, you can. It is called Internet tethering. It usually costs extra.

Today we live in an extremely connected society. There many places we can go in this day and age that offer wireless access to the Internet. However, there are times when we need to get online immediately but aren't near a WiFi hotspot. This is why AT&T Phones offer data plans with tethering. Tethering allows you to turn your phone into a portable WiFi hotspot and connect your laptop and other wireless devices to the Internet. You'll never have to go searching for a WiFi hotspot again - with tethering the hotspot is wherever you are.

wireless networks accesible from your mobile phone