Setting up MMS Picture Messaging on the Nokia Lumia 900 Using Windows Phone 7

For some reason, the Nokia Lumia 900 does not have the settings option to enter the MMS APN information. I think this was a limitation of Windows Phone 7. If you are using a Lumia 900, Nokia has an option.

Install the Network Setup App from the Windows Store
http://www.windowsphone.com/en-us/store/app/network-setup/b95840dc-a542-42a6-bee4-7d1a12f62d2c

Your MMS APN is specific to your wireless company.

Leave a comment if you need help.