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[![5G Home Internet](https://www.t-mobile.com/content/dam/digx/tmobile/us/en/branding/logos/T_Badge_5G_Home_Internet_TMO_Horiz_PRI_EL_RGB_on-W_2025-05-20.png)](https://www.t-mobile.com/home-internet) Log in [![5G Home Internet](https://www.t-mobile.com/content/dam/digx/tmobile/us/en/branding/logos/T_Badge_5G_Home_Internet_TMO_Horiz_PRI_EL_RGB_on-W_2025-05-20.png)](https://www.t-mobile.com/home-internet) Search Search Submit search query Close out of search RECENT SEARCH0 recent searches POPULAR0 popular search suggestions Categoriesundefined categories Suggestions0 search suggestions TOP SUGGESTIONS - [](https://www.t-mobile.com) undefined top suggestions - [Plans](https://www.t-mobile.com/home-internet/plans) Plans - [Home Internet plans](https://www.t-mobile.com/home-internet/plans) - [Home Internet ALL-IN plan](https://www.t-mobile.com/home-internet/plans/all-in-unlimited-internet-plan) - [55+ Phone & Internet Bundle](https://www.t-mobile.com/home-internet/deals/phone-internet-bundles-for-seniors) - 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[](https://www.t-mobile.com) undefined top suggestions [Check availability](https://www.t-mobile.com/home-internet/eligibility) My account [Log in](https://www.t-mobile.com/signin?state=https%3A%2F%2Fwww.t-mobile.com%2Fhome-internet%2Fplans) [Back to my account](https://www.t-mobile.com/account/dashboard) For Home Internet customers only - [Sign up for T-Mobile ID](https://www.t-mobile.com/home-internet-signup) - [Wireless](https://www.t-mobile.com/) - [Business](https://www.t-mobile.com/business) - [Prepaid](https://prepaid.t-mobile.com/home) - [Internet](https://www.t-mobile.com/home-internet) [](https://www.t-mobile.com) # Arcadyan KVD21 Gateway Find technical details, tutorial links, and other information about your Arcadyan KVD21 gateway. - [About the Gateway](https://www.t-mobile.com#about) - [LCD Screen](https://www.t-mobile.com#lcd) - [Tech Specs](https://www.t-mobile.com#tech-specs) - [Firmware Updates](https://www.t-mobile.com#firmware) - [Web Gateway User Interface (GUI)](https://www.t-mobile.com#gui) ## About the Gateway For more gateway steps, such as instructions on how to install your SIM or reset your gateway, check out our Tutorials.  [Arcadyan KVD21 Gateway Tutorials](https://www.t-mobile.com/support/tutorials/device/t-mobile/arcadyan-kvd21-gateway) ### Reading the gateway label The label on the back of your gateway includes information about the device and network including the __default Wi-Fi network name and Wi-Fi password.__ [Learn more about setting up your gateway , opens in a new window](https://www.t-mobile.com/support/home-internet/t-mobile-gateway) ![Arcadyan KVD21 Gateway Label with an outline around the Wi-Fi name and password in the top-left corner](https://t-mobile.scene7.com/is/image/Tmusprod/Arcadyan%20Gateway%20label?ts=1684788731401&%24digx-16x9-small%24&dpr=off) Front ![Front view of the Sagemcom Fast 5688W gateway](https://t-mobile.scene7.com/is/image/Tmusprod/arcadyan-device-7%3A1-to-1-ratio?ts=1684788591276&dpr=off) Back ![An image of the back of the Sagemcom gateway with arrows pointing to it's parts. In the middle of the gateway is the Label. Below that is the Data Port. Below the Data Port are two Ethernet Ports. Below the Ethernet Ports is the Power Button. Below the Power Button is the Power Port. ](https://t-mobile.scene7.com/is/image/Tmusprod/Arcadyan%20Gateway%20parts%3A1-to-1-ratio?ts=1684787364581&dpr=off) ## LCD Screen Press the left or right arrow ( < or > ) on the LCD panel with your finger to move between screens. The illuminated dot on the bottom of the screen indicates where you are in the screen sequence. - ### Connection - The gateway displays up to five bars, indicating signal strength. - The number of bars shown represents the strength of the gateway's current connection to the cellular network. - An 'X' indicates the gateway is not connected to the cellular network. - ### Devices - The number displayed indicates the number of devices currently connected to the gateway (including wireless and wired devices). - Use the [T-Life app](https://www.t-mobile.com/support/home-internet/app "Learn more about the T-Mobile Internet app") to see and manage each connected device. - ### Internet Line Number The Internet Line Number screen displays your internet number, which can be used to identify your account when calling for support and making payments online. - ### Language Settings The gateway supports both English and Spanish on the LCD screen. To adjust this setting: 1. From the __Languages__ screen, select __Change__. 2. Select __English__ or __Espanol__. 3. Press __O__ (OK) button to set the language. - ### Messages The Messages screen allows you to view your messages by pressing < and > to scroll between messages.  To delete a message: 1. Press __O__ (OK) on the panel to select __VIEW MESSAGES__ and view unread messages. 2. Select __NEXT__ to read the next message. 3. Select __DONE__ when you have read all messages. 4. Select __DELETE__ to delete a message. 5. When prompted with a message asking you to confirm deletion, select __YES__ to confirm. You can block messages to your gateway through your T-Mobile account. See [Message Blocking](https://www.t-mobile.com/support/plans-features/message-blocking) for details. - ### Notifications Notifications can appear at any time during gateway operation. Some are in response to an action you have taken, and others are related to network connection. ## Tech Specs - __Battery__ - None - __AC Adapter__ - 100V - 240V - 12V / 1.2A - __Dimensions__ __(W x H)__ - 4.73 x 7.52 in (120mm x 191mm) - __Operating temperature range__ - 0° – 40° C (0° F – 104° F) - __Connections__ - Dual Band Wi-Fi 6 (802.11ax) with 4x4MIMO - WPA2/WPA3 Wi-Fi Security - Ethernet plugs 2xRJ-45 - USB Type C x 1 for regular power source - USB Type C x 1 for data (not functional) - Maximum recommended devices: 64 - __Network__ - 5G bands: N41, N66, N71 - 4G LTE bands: B2, B4, B5, B12, B41, B46, B66, B71 ## Tech Specs ## Firmware Updates - Firmware updates are pushed out automatically when available. They can't be manually requested. - They're sent out in phases over a few weeks, so not all users get the update at the same time. - Updates happen between 1 am and 3 am PST; make sure your gateway is turned on during this time to get the update. - Do not restart the gateway when it’s updating. The gateway will automatically restart once the update is complete ### __Firmware versions, fixes, and features__ - __1.00.26:__ Stability improvements - __1.00.25:__ Security & stability improvements - __1.00.24:__ Security & stability improvements - __1.00.23:__ Security & stability improvements - __1.00.22:__ Security & stability improvements - __1.00.21:__ Security & stability improvements - __1.00.20:__ Stability improvements, Internet Line Number added to gateway LCD - __1.00.18:__ Security & stability improvements - __1.00.16:__ Security & stability improvements - __1.00.14:__ Release version   ## Firmware Updates ## Web Gateway User Interface (GUI) __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. 2. Open a web browser and visit [http://192.168.12.1](http://192.168.12.1/)   __Home Screen__ Check the Home screen to view the following information: - __Connection status:__ Network status of the connected devices, the gateway, and the cellular network connection - __Connection quality:__ Cellular strength, represented by the number of bars - __Gateway information:__ Firmware version, serial number, and running time (time since the gateway was last restarted) - __Mobile app:__ Scan the QR code with your smartphone to set up your gateway with the [T-Life app](https://www.t-mobile.com/support/home-internet/app "Learn more about the T-Mobile Internet app")   __Wi-Fi Networks__ To configure your T-Mobile gateway with a single Wi-Fi network or two separate W-Fi networks, use the [T-Life app](https://www.t-mobile.com/support/home-internet/app "Learn more about the T-Mobile Internet app").  ## Need help? 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