Network & APN: Apple iPhone 3GS

Learn how to connect to data networks (2G, 4G) and data roaming on the Apple iPhone 3GS.

 

 

 

 

APN & data settings

 

To set the Access Point Name (APN) and turn on data settings, follow these steps:

 

Note: These settings are automatically set to the correct values with the Carrier Update when a T-Mobile SIM is inserted.

 

  1. From the main menu, tap Settings.
  2. Tap General.
  3. Tap Cellular.
  4. Verify the following settings:
    • Data Roaming: On
    • Wi-Fi: Off
    • 3G Enable: On
      • Note: Changing the 3G Enable function while the device is on an active call may cause the call to disconnect.
  5. Tap Cellular Data Network.
  6. Configure as follows:
    • APN: fast.t-mobile.com
    • Username: <Leave Blank>
    • Password: <Leave Blank>
  7. Enter the following information under the MMS section:
  8. Enter the following information under the Internet Tethering section:
    • APN: pcweb.tmobile.com
    • Username: <Leave Blank>
    • Password: <Leave Blank>
  9. Press the Home button to save the APN and exit to the main screen.
  10. Turn the device off and back on.

 

 

Manual network selection

 

To manually select the wireless network the device connects to, follow these steps:

 

  1. From the Home screen, tap Settings.
  2. Tap Carrier.
    • Note: If the Carrier option does not appear with a T-Mobile SIM card in the device, it may indicate the device was not correctly unlocked or jailbroken.
  3. Slide the Automatic slider to the Off position to start scanning for networks.
  4. Select desired carrier.
  5. Tap Settings.
  6. Press the Home button.

 

The device detects and registers on wireless networks inside T-Mobile’s calling area, but roaming networks are usually restricted to T-Mobile SIM cards. You can manually select a network only in areas where T-Mobile does not own GSM spectrum.

 

 

Switch 2G / 4G

 

To change the band between 2G and 4G, follow these steps:

 

  1. From any Home screen, tap Settings.
  2. Tap General.
  3. Tap Cellular.
  4. Drag the Enable 3G slider to OFF.

 

 

Turn on / off Airplane mode

 

Airplane mode turns off wireless connections. This allows you to use apps and menus, but not make calls or use the internet.

 

To turn on or turn off airplane mode, follow these steps:

 

  1. From the Home screen, tap Settings.
  2. Drag the Airplane Mode slider to ON.

 

 

Turn on / off data roaming

 

To turn on or turn off data roaming, follow these steps:

 

  1. From any Home screen, tap Settings.
  2. Tap General.
  3. Tap Cellular.
  4. Drag the Data Roaming slider to OFF.

 

 

Turn on / off mobile data

 

To turn on or turn off mobile data, follow these steps:

 

  1. From any Home screen, tap Settings.
  2. Tap General.
  3. Tap Cellular.
  4. Drag the Cellular Data slider to ON or OFF.