[T-Mobile LG G2x] cargohook:
Simple Mobile APN Configuration on the G2x

This goes out to all my broke peoples out there! Keep yo heads up, Fam, and we gonna get through these tough times together!

NOTE: This guide is for ICS-based ROMS, such as Hellfire Sandwich. This is the most highly recommended ROM for G2x right now ... according to ME!

After much trial and error--having just been forced to involuntarily abandon T-Mo US for Simple Mobile last week due to lack of having paper--the following procedure worked for me. Don't listen to NOBODY ELSE, other instructions DO NOT WORK, I know I tried them all! Especially don't go by the guide on Simple's website, they ain't got a ****in clue what they talking about either! Anyway, I hope it might help other people with the same problem.

If you currently don't see any APNs under System Settings > Wireless & Networks > More... > Mobile Networks > Access Point Names, good! Do the following procedure.

If you've already been pranking around with the APNs trying to get them to work, delete all your APNs under System Settings > Wireless & Networks > More... > Mobile Networks > Access Point Names, reboot your phone and then do the following procedure.

You must not be connected to Wi-Fi when you go through these steps.

From the APNs screen, press the Menu Button. Tap Reset to Default. Wait as much as 5-10 minutes and let the thing do its work. You should now see 2 APNs: Simple and T-Mobile US.

Now you have two APNs there, but neither of them will actually work ... yet. They're generic and now we'll need to do some tweaking.

Counter-intuitively, we're gonna ignore the APN called Simple and work with the one titled T-Mobile US. You'll understand why in a minute, trust me.

Press the Menu Button.

Tap System Settings.

Under Wireless & Networks, tap More...

Tap Mobile Networks.

Check that "Data Roaming" and "Use Only 2G Networks" are both unchecked.

Tap Access Point Names.

If you did the Reset to Default routine above, tap T-Mobile US.

Here are the settings (be careful they are case sensitive and don't put stray spaces in there or you'll be pulling out your hair wondering why it won't work, trust me on that!):

Name: Don't change, leave it as "T-Mobile US". I don't know why but the G2x seems to like it better that way.

APN: simple

proxy: 216.155.165.050

Port: 8080

Username: Don't change, leave T-Mo US setting (whatever that is) intact.

Password: Don't change, leave T-Mo US setting (whatever that is) intact.

Server: Don't change, leave T-Mo US setting (whatever that is) intact.

MMSC: http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc

MMSProxy:[empty]

MMS Port: [empty]

MCC: 310

MNC: 260

APN Type: default,supl,mms

APN protocol: IPv4

Once you finish filling all this in, press the Menu Button.

Tap Save.

This will take you back to the APNs screen.

Now tap the other APN, Simple.

When it opens up, tap the Menu Button.

Tap Delete APN.

You are done. Watch the Signal Strength indicator in the Notifications Bar. It may take a minute, but it should now turn Blue, you should get 5 bars, and your should see a tiny H appear next to it.

You're now good to go, but you can optionally reboot if you feel like it and then check if your APN is still there. If it ain't, program it again and use APNsBU or APN Manager Pro from the Market/Google Play Store to backup your APN settings for easy restoral just in case they keep vanishing.

Good luck! ;)

Hit the "Thanks!" Button below if this helped you.

All Power to the People!