T-Mobile Default Usernames & Passwords
The default credentials needed to login to your T-Mobile router

Info updated May 5, 2023

The majority of T-Mobile routers have a default username of -, a default password of admin, and the default IP address of

These T-Mobile credentials are needed when doing a login to the T-Mobile router's web interface to change any settings.
Since some of the models don't follow the standards, you can see those in the table below.

Below the table are also instructions on what to do incase you forget your T-Mobile router password, need to reset your T-Mobile router to its factory default password, or the password reset doesn't work.

Tip: Press ctrl+f (or cmd+f on Mac) to quickly search for your model number.

T-Mobile default Password List (Valid May 2023)

Model Default Username Default Password Default IP address
Sonic 4G Mobile Hotspot
Sonic 4G Mobile Hotspot default factory settings
- admin
Sonic 4G Mobile Hotspot (UMG587)
Sonic 4G Mobile Hotspot (UMG587) default factory settings
- admin
TM-RTL0102 default factory settings
admin admin

Instructions and common questions

Forgot your T-Mobile router password?

Have you changed the username and/or password of your T-Mobile router and forgotten what you changed it to?
Don't worry: all T-Mobile routers come with a default factory set password that you can revert to by following the instructions below.

Reset T-Mobile router to default password

If you decide to revert your T-Mobile router to it's factory defaults, you should do the 30-30-30 reset as follows:

  1. When your T-Mobile router is powered on, press and hold the reset button for 30 seconds.
  2. While still holding the reset button pressed, unplug the power of the router and hold the reset button for another 30 seconds
  3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

Your T-Mobile router should now be reset to its brand new factory settings, Check the table to see what those are (Most likely -/admin).
If the factory reset didn't work, check out the T-Mobile 30 30 30 factory reset guide .

Important: Remember to change the default username and password to increase the security of your router after the factory reset, as the default passwords are available all over the web (like here).

I still can't access my T-Mobile router with the default password

Make sure that you have followed the reset instructions correctly as the T-Mobile routers should always rever to their factory default settings when reset.
Otherwise, there is always the risk that your router is damaged and might need to be repaired or replaced.