Network & APN: Microsoft Lumia 640

Use these steps to support network settings on the Microsoft Lumia 640.

 

 

 

APN & data settings

Internet APN

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Scroll down to and tap SIM settings.
  6. If necessary, tap the Manual Internet APN slider to turn it on.
  7. Tap add internet APN.
  8. Enter fast.t-mobile.com in the APN field.
  9. Leave all other fields unchanged.
  10. Tap Save.

 

MMS APN

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Scroll down to and tap SIM settings.
  6. Tap add MMS APN.
  7. Enter fast.t-mobile.com in the APN field.
  8. Enter http://mms.msg.eng.t-mobile.com/mms/wapenc in the MMSC (URL) field.
  9. Leave all other fields unchanged.
  10. Tap Save (disk icon).

 

Manual network selection

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.

 

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Scroll down to and tap SIM settings.
  6. Tap Network selection.
  7. Tap search for networks.
  8. Tap to select the desired network.

 

Switch 2G / 4G

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Scroll down to and tap SIM settings.
  6. Tap Highest connection speed.
  7. Tap to select desired band.

 

Turn on / off airplane mode

Airplane mode turns off wireless connections. This allows app and menu use, but prevents voice or Internet use.

 

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Tap airplane mode.
  4. Tap the Status switch to turn it on or off.

 

Turn on / off data roaming

Turn on

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Tap Data roaming options.
  6. Tap roam.

 

Turn off

  1. From the start screen, swipe left.
  2. Scroll down to and tap Settings.
  3. Scroll down to and tap Network + wireless.
  4. Scroll down to and tap cellular+SIM.
  5. Tap Data roaming options.
  6. Tap don't roam.