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The Web Gateway User Interface (GUI) lets you access the Nokia 5G21 Gateway and adjust the settings. You can also use the T-Mobile Home Internet app for the simplest way to manage the gateway. Don't see what you're looking for? Check out the Tutorials and User Guide.

Access the Web GUI

You must disconnect active VPN sessions to connect and log in.

  1. Power on your gateway and connect to it over Ethernet or Wi-Fi. For steps, check out Getting Started with T-Mobile Home Internet.
  2. Open a web browser and visit
  3. Log in with your username and password. To find the default username and password, check the label on the underside of the gateway.
  4. Once you have logged in, you will see an Overview screen that contains Network Overview and Gateway Information.


Setup Wi-Fi name, password, and settings

  1. Access the Web GUI and choose Network > Wi-Fi Networks on the left-hand side.
  2. Choose the 2.4 GHz or 5 GHz network to adjust the following options:
    • SSID Name (Wi-Fi Network Name)
    • Encryption Mode
    • WPA Version
    • WPA Key

Guest network

The device doesn't have a dedicated guest network, but you can manually configure one of the available SSIDs to be a guest network.

  1. Access the Web GUI and choose Network Wi-Fi Networks on the left-hand side.
  2. Select the 2.4 GHz or 5 GHz network. Each frequency must be set up separately.
  3. Choose Select SSID to configure and choose an unused SSID, like SSID2.
  4. Enter a new SSID / Wi-Fi Network Name that's different from other SSIDs you have configured.
  5. Make sure to enable SSID and Broadcast.
  6. Adjust the following settings as desired, then choose Save Changes.
    • Total clients (128 recommended)
    • Encryption Mode 
    • WPA Version
    • WPA Key (Wi-Fi Password)


Text messages (SMS)

Text messages sent to the device will display on the LCD screen, not in the user interface. You can't send messages from this device.

  • Select < and > to scroll between messages.
  • Select the trash icon to delete a message, then choose Yes to confirm.


Reboot, reset, or update


Rebooting the Gateway cycles power and keeps any changes you've made to settings. You can reboot in the Web GUI settings, or by pressing the Power button on the device off and back on again. To reboot using the Web GUI:

  1. From the System tab, select Reboot.
  2. You will receive a warning that the network will be offline while rebooting. Select Yes to continue.

Factory Reset

A factory reset restores all settings and configuration changes to factory default. You can reset the gateway by inserting a paperclip in the Reset port on the back of the device for 5-10 seconds or using the Reset button in the Web GUI. To perform a factory reset in the Web GUI:

  • Reset through settings
    1. From the System tab, choose Factory Reset.
    2. You will receive a warning that network-related data will be deleted. Select Yes to continue.
    3. The LCD screen on the gateway will display "Factory reset is ongoing". Once complete, you will be prompted to download the T-Mobile Home Internet app. 
    4. On the LCD screen, swipe left to the Connection screen.
    5. Select Refresh on the Web GUI screen.
  • Reset with button
    1. Insert a paperclip in the Reset port on the back of the device.
    2. Press the button inside until the LCD screen shows Release button to restart.
    3. Remove the paperclip and wait for the device to restart.

Firmware Upgrade

When available, gateway firmware upgrades will be automatically pushed to the device via Auto Configuration Server (ACS). Learn how to view the firmware version.


Language, Admin password, & other information

Change language

Select the arrow beside the language in the bottom-left corner and choose either English or Español.

Change User Interface Password

  1. From the System tab, select Change Password.
  2. Enter the Current Password (the default password is located on the bottom of the gateway).
  3. Enter the New Password, then confirm the New Password.
  4. Select Update Password.

Gateway information

  1. On the left side, choose Network. Then select the Gateway icon.
  2. View the following information:
    • Gateway name
    • Serial number
    • Hardware version
    • Software version
    • Running time

Network Status

  1. On the left side, select Status.
  2. View the following information:
    • Data Usage
    • SIM
      • IMSI
      • ICCID
    • Cellular Network
      • Primary Signal
      • Secondary Signal
      • Access Point
      • Total Download
      • Total Upload
    • Ethernet
      • IP Address
      • Subnet Mask
      • Received Data
      • Sent Data
    • Wi-Fi
      • 2.4GHz
      • 5GHz Low Frequency
      • 5GHz High Frequency
      • Received Data
      • Sent Data


Choose Statistics on the left side to view information on data sent over your LAN, Cellular, and WLAN connections.


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