Fix connection problems

The most common type of Wi-Fi networks that Chrome devices support are:

• Standards: 802.11 a/b/g/n and 802.11ac for AC-equipped Chromebooks
• Security: WEP, WPA/WPA2, EAP-TLS, EAP-TTLS, EAP-PEAP, and TKIP

• Make sure your Chromebook is connected to the router with a working Ethernet cable or USB adapter.
• At the bottom right, select the time. If your Chromebook is connected properly, you'll see Connected to Ethernet .
• Try connecting a different computer to the router. If it connects properly, you might need a different cable or USB Ethernet adapter.

1. Make sure your Chromebook can connect to mobile networks, and that your connection is on.
2. Restart your Chromebook.
3. Make sure the T-Mobile or Verizon Wireless network is turned on. Call your mobile carrier if you have problems connecting.

You can also try switching mobile carriers:

1. Sign in to your Chromebook as a guest.
2. Press Ctrl + Alt + t to open a terminal window.
3. Type this command: modem_set_carrier Generic UMTS
4. Press Enter.
5. Type exit and press Enter again.
6. Turn off the Chromebook.
7. Insert a SIM card from a different mobile carrier.
8. Turn on the Chromebook.

To switch back to Verizon, open a terminal window and type this command:

modem_set_carrier Verizon Wireless

To switch back to T-Mobile, open a terminal window and type this command:

modem_set_carrier T-Mobile

1. Make sure your Chromebook can connect to mobile networks, and that your connection is on.
2. Restart your Chromebook.
3. Check that your SIM is activated. If you're still having problems, contact your carrier.
4. You might need a PIN to unlock the SIM card. If you don't know the PIN, call your carrier or use mobile data roaming.

If you still have trouble after you try these steps, contact your Chromebook manufacturer.

If you still encounter issues, find options to contact support. On another device that has Internet access, go to Chromebook Help Center.

Contact these phone numbers for support:

• United States: 1-855-317-4935, 24 hours a day, 7 days a week
• Germany: 08007235105, 9 AM – 5 PM (Monday - Saturday)
• France: 0805 541 040, 9 AM – 5 PM (Monday - Saturday)

Advanced help for Google Cloud network administrators:

You can contact Google Cloud support at Chrome Enterprise and Education Help Center.

• United States: 1-877-355-5787
• International: +1-646-257-4500

Other devices are connected except for Chrome devices

If you’ve tried all the options and your Chrome devices still aren’t connected to the network, make sure you’ve allowlisted the hostnames. Learn how to set up a hostname allowlist.