Which of these 2 settings are you guys using?
Android 4.0 & 4.1 (Ice Cream Sandwich & Jelly Bean) - Internet and MMS
Pull down the notifications screen & tap on Settings
Tap on Mobile Data (some phones say "more"
Tap Mobile Networks (some phones have "Access Point Names" here)
Tap Access Point Names
Press the menu button
Select New APN
Name:SIMPLE Mobile
APN: simple
Proxy:<Not set>
Port:<Not set>
Username:<Not set>
Password:<Not set>
Server:<Not set>
MMSC:
http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc
MMS Proxy:<Not set>
MMS Port:<Not set>
MCC: 310
MNC: 260
APN Type: default,supl,mms,admin
If no APN settings are present, a restore to factory default settings may be required.
Select Menu and Save
Go back one screen to the APN list and tap on the dot to Enable the SIMPLE Mobile APN
Restart phone & you're set!
These settings have been tested to work with the Galaxy S3 and the HTC One S
LG Optimus T and Optimus G2X - Internet and MMS
Press Menu
Select Settings
Select Wireless & Networks
Check that Airplane mode is unchecked
Select Mobile Networks
Check that Data Enabled is checked
Select Access Point Name
*Note* T-Mobile US APN cannot be edited or delete
Press Menu
Select New APN
Enter the following settings:
Name:SIMPLE Mobile
APN*:simple
Proxy:<Not set>
Port:<Not set>
Username:<Not set>
Password:<Not set>
Server:<Not set>
MMSC:
http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc
MMS Proxy:<Not set>
MMS Port:<Not set>
MCC: 310
MNC: 260
Authentication Type: <Not set>
APN type:<Not set>
*Case sensitive
Press Menu
Select Save
Make sure the green radio button is directly to the right of SIMPLE Data MMS
Reboot phone.
Your Internet & MMS is now configured!