Phones Unlocked  by  iTechUnlimited Until Now:

To setup T-Mobile Internet and picture messaging on your iPhone, follow these steps:

 

  1. Ensure you start with Setup guide: Apple® iPhone®.
  2. From the main menu, tap Settings.
  3. Tap General.
  4. Tap Network.
    • Note: For iOS6, tap Cellular.
  5. Verify the following settings:
    • Data Roaming: On
    • Wi-Fi: Off
    • 3G Enable: On 
      • Note: Some iPhones may be missing the WCDMA 1700/2100 band and may not function on the T-Mobile 3G network until the network reallocation has been completed. See: T-Mobile Steps Up “Bring your own iPhone” Efforts.
      • Note: Changing the 3G Enable function while the device is on an active call may cause the call to disconnect.
  6. Tap Cellular Data Network.
  7. Configure the internet settings under the Cellular Data section:
    • APN: fast.t-mobile.com
      • Note: For some iPhone unlocks you may need to use wap.voicestream.com.
    • Username: <Leave Blank>
    • Password: <Leave Blank>
  8. Configure the picture message settings under the MMS section:
  9. Enter the following information under the Internet Tethering section:
    • APN: pcweb.tmobile.com
    • Username: <Leave Blank>
    • Password: <Leave Blank>
  10. Press the Home button to save the APN and exit to the main screen.
  11. Verify MMS is enabled:
    1. Tap Settings.
    2. Tap Messages.
    3. Set MMS Messaging to On.
      • For iOS5 and lower, Tap MMS first.
  12. Turn the device off and back on.
  13. Test the connection by opening the Safari web browser and sending a picture message.


 Android Phone Settings:

Follow The Steps >  

1-Open the Settings 
2-Select Wireless & networks
3-Select Mobile Networks
4-Select Access Point Names.
5-Tap the three dots at the bottom right and select New APN

Enter The Following information

Name T-Mobile US
APN epc.tmobile.com
fast.t-mobile.com (for LTE devices)
Proxy blank
Port blank
Username blank
Password blank
Server wap.voicestream.com
MMSC http://mms.msg.eng.t-mobile.com/mms/wapenc
MMS Proxy 216.155.165.50
MMS Port blank
MCC 310
MNC 260
Authentication type not set
APN Type default
APN protocol IPv4
Bearer Unspecified

All done. The multimedia messaging settings have been set up 

T-Mobile Phone Data Settings List (APN Data Settings)

Access Point Names are composed of several settings. These settings are essentially text fields that you must fill in in order to connect to data services. APNs exist because carriers broadcast and receive data over government regulated radio frequencies. Each phone must be specially configured to use these settings or otherwise potentially suffer from data connection issues, such as the inability to send MMS or use mobile data. iTech Unlimited Phone Data Settings