Start here
Use the right APN for Tello — wholesale is the primary value
This guide covers the Tello profile for the United States. Tello operates as an MVNO on the T-Mobile network and uses wholesale as its primary APN.
On most Tello-compatible phones, the APN is configured automatically when the SIM is inserted. If your data works out of the box, no manual change is needed.
Manual APN configuration is needed when using an unlocked phone, after a network reset, or when switching from another carrier.
APN fields
Tello APN starting point
| Field | Value | Note |
|---|---|---|
| Name (Internet) | Tello | This is only a label inside your phone. |
| APN | wholesale | Primary APN for Tello on the T-Mobile network. |
| APN type | default,supl,mms | Add ,dun if hotspot does not work. |
| Protocol | IPv4/IPv6 or device default | Keep the device default when unsure. |
| Username and password | Not set | Tello does not require a username or password. |
| MCC | 310 | Standard US MCC. Keep the SIM default. |
| MNC | 260 | T-Mobile MNC. Keep the SIM default. |
| MMSC | http://mmsc.mobile.att.net | Tello uses the AT&T MMS gateway. |
| MMS proxy | proxy.mobile.att.net:80 | Required for MMS on most devices. |
Tello uses the T-Mobile network wholesale APN. On many phones the APN is set automatically. If the APN menu is greyed out, the carrier profile is active and no manual change is needed.
Setup
Setup steps for Android
- Open Settings, tap Network & Internet, then SIMs or Mobile Network.
- Select your Tello SIM and tap Access Point Names.
- If the APN menu is greyed out, Tello is managing the profile automatically — no changes needed.
- Tap the + icon to create a new APN, or edit the existing Tello profile.
- Enter wholesale as the APN value. Set the APN type to default,supl,mms.
- Leave all other fields at their default. Do not set a username or password.
- Save the profile, select it if your phone asks, then disable WiFi for the test.
- Toggle airplane mode for ten seconds and open a browser before testing apps or hotspot.
Setup
Setup steps for iPhone
- Open Settings, tap Cellular, then Cellular Data Network.
- If you have an eSIM, tap the Tello line under Cellular Plans first.
- Enter wholesale in the APN field for cellular data.
- Leave the username and password fields blank. Tello does not use them.
- For MMS, enter http://mmsc.mobile.att.net in the MMSC field and proxy.mobile.att.net:80 in the MMS proxy field.
- Go back, disable WiFi, toggle airplane mode and test in Safari.
Guide
Full setup and troubleshooting notes
Before changing the APN
Tello is a T-Mobile MVNO. On most phones the APN is configured automatically through a carrier profile. If your data works out of the box, you do not need to change anything.
Manual APN configuration is needed on unlocked phones, after a network reset, or when switching from another carrier without re-activating the Tello SIM.
APN value
Tello uses wholesale as its primary APN on the T-Mobile network. This is the standard T-Mobile MVNO APN.
eSIM setup
Tello supports eSIM on compatible devices. When you activate a Tello eSIM, the carrier profile and APN are installed automatically. Manual APN editing is rarely needed with eSIM.
Hotspot configuration
Tello includes mobile hotspot on most plans. The same wholesale APN works for hotspot. If hotspot does not work, add ,dun to the APN type.
MMS configuration
Tello MMS uses the AT&T MMS gateway. Set the MMSC to http://mmsc.mobile.att.net and the MMS proxy to proxy.mobile.att.net:80.
Testing
After saving the APN, disable WiFi, toggle airplane mode for ten seconds, and test in a browser.
Before contacting support
Final checks if data does not work
- Confirm the APN is set to wholesale.
- Set APN type to default,supl,mms and add ,dun if hotspot is the issue.
- On dual-SIM phones, confirm the Tello line is selected for mobile data.
- Check that your Tello plan is active and has data remaining.
- Toggle airplane mode for 10 seconds after every APN change.
Questions
Tello APN questions
What APN does Tello use?
Tello uses wholesale as the primary APN for 4G LTE and 5G data on the T-Mobile network.
Does Tello require a username or password for APN?
No. Tello does not require any username or password for mobile data, MMS, or hotspot.
What is the MMS setting for Tello?
The MMSC for Tello is http://mmsc.mobile.att.net. The MMS proxy is proxy.mobile.att.net:80.
Does Tello support eSIM?
Yes. Tello supports eSIM on compatible devices. The APN is set automatically during activation.
Does Tello 5G work with the same APN?
Yes. Tello 5G uses the same APN wholesale as 4G LTE.
Editorial notes
Review notes
We focus on safe device paths, carrier-specific caution and practical troubleshooting.
Next
Related guides
Continue with the closest setup path.
