Just a quick post for everyone who’s lucky enough to be using T-Mobile on their iPhone in the US. It’s possible to get a data plan for your iPhone at only $9.99. It’s edge only, but that doesn’t matter because T-Mobile’s 3G network is incompatible with the iPhone’s 3G radio.

Here it is:

1. Log into your account at tmobile.com. Change your device to be a silver (the pink one won’t work!) Motorola RAZR.
2. As of this writing, there’s a bug in the site that prevents you from seeing the correct data plans for your newly selected device, so log out of the site, then log back in again. Now fFind your way to the page that lists the possible services you can add on to your plan, and you should now be able to select a $9.99/month web plan ($20 gets you unlimited texting as well). Select it.
3. In your iPhone go to Settings->General->Network->Cellular Data Network and for the APN use internet2.voicestream.com. Leave the username and password blank.

You might need to wait up to 24 hours for the service to be activated. Just keep restarting your phone periodically and check to see if it starts working.