Instructions
Update your PSP&'s system software before attempting to log on at a HotSpot. You can do this by using your home wireless Internet connection; just go to the Settings menu and select "System Update" to download the latest version of the PSP software. You can also download the update onto your computer and transfer it to your PSP using a USB cable. Just copy the update file to the GAME folder in your PSP&'s memory stick.
Visit a T-Mobile HotSpot. There are over 45,000 locations across the world, 10,000 of which are in the United States; for a list of locations, visit hotspot.t-mobile.
Power on your PSP and go to "Network Settings" under the Settings menu on the XMB home menu. Choose "Infrastructure Mode" and select "[New Connection]." On the next screen, choose "Wireless Hotspot" and choose the T-Mobile HotSpot option from the list on the following screen. Follow the onscreen prompts to set up an account with the T-Mobile HotSpot service and connect to the Internet.