T-Mobile APN Settings 2026 - Fast Internet Configuration
Configure T-Mobile mobile data settings on Android and iOS
Set up your T-Mobile APN settings to ensure the fastest possible 5G and 4G LTE speeds. T-Mobile requires specific settings, particularly the APN 'fast.t-mobile.com' and IPv6 protocol, to function correctly. If you have an unlocked phone or are experiencing connection drops, manually configuring these settings often resolves the issue.
T-Mobile APN Settings
Use these settings to configure your T-Mobile mobile data connection.
| Setting | Value |
|---|---|
| APN | fast.t-mobile.com |
| MCC | 310 |
| MNC | 260 |
| Authentication | None |
| APN Type | default,supl,mms |
| APN Protocol | IPv6 |
| Username | Not required |
| Password | Not required |
How to Configure T-Mobile APN on Android
- 1 Go to Settings > Connections > Mobile networks.
- 2 Tap Access Point Names.
- 3 Tap Add or the '+' icon.
- 4 Set Name to 'T-Mobile US' and APN to 'fast.t-mobile.com'.
- 5 Set MMSC to 'http://mms.msg.eng.t-mobile.com/mms/wapenc'.
- 6 Ensure APN Protocol is set to 'IPv6'.
- 7 Tap Menu > Save, then select the T-Mobile US profile.
How to Configure T-Mobile APN on iPhone/iOS
- 1 Go to Settings > Cellular > Cellular Data Network.
- 2 In the APN field for Cellular Data, LTE Setup, and MMS, enter 'fast.t-mobile.com'.
- 3 Leave Username and Password blank.
- 4 Enter the MMSC URL in the MMS section.
- 5 Restart your device.
Troubleshooting
Common issues and solutions when configuring T-Mobile APN settings.
- Data works but MMS fails
- This is usually an MMSC error. Ensure the MMSC URL is correct (http://mms.msg.eng.t-mobile.com/mms/wapenc) and APN Type includes 'mms'.
- Slow speeds on 5G
- Verify that 'APN Protocol' is set to IPv6. T-Mobile's 5G network is optimized for IPv6. If set to IPv4, you may be routed through a slower legacy gateway.
- Unable to save APN
- If the MCC/MNC values (310/260) don't match your SIM, Android may discard the APN. Leave MCC/MNC as the default values populated by your phone.
T-Mobile APN Settings FAQ
What is the best APN for T-Mobile 5G?
The best APN for T-Mobile 5G is 'fast.t-mobile.com' with the APN Protocol set to 'IPv6'. This configuration ensures access to T-Mobile's Standalone (SA) 5G network.
Should I use fast.t-mobile.com or epc.tmobile.com?
Use 'fast.t-mobile.com'. The older 'epc.tmobile.com' is for legacy non-LTE devices and will result in significantly slower speeds on modern smartphones.
What are the T-Mobile MCC and MNC codes?
T-Mobile uses MCC 310 and MNC 260. However, Sprint-legacy SIMs might use different MNCs (e.g., 120). Always trust the auto-detected values in your APN settings.
How do I fix T-Mobile tethering/hotspot issues?
If hotspot isn't working, ensure 'APN Type' includes 'dun' (if your phone allows it) or just 'default,supl,mms'. Some devices require a separate APN for hotspot data using the same 'fast.t-mobile.com' address.
Why does my APN disappear after saving?
This happens if the MCC/MNC you entered conflicts with the SIM card. Create the APN again but do NOT change the MCC and MNC numbers from what the phone automatically puts there.