Troubleshooting

Yealink phone says "No Internet"

Network, power, DHCP and firewall checks for a Yealink phone that cannot reach the network.

Updated 2025-12-07

If your Yealink phone displays No Internet, work through these steps.

Check the basics

  1. Network cables - make sure the Ethernet cable is firmly seated in both the phone and the network switch or router.
  2. Power supply - if you are using Power over Ethernet, confirm the switch or injector is working. Otherwise check the power adapter is connected.
  3. Restart the device - unplug the power cord (or the Ethernet cord if you use PoE), wait 10 seconds, then plug it back in.
  4. Internet connection - confirm other devices on the same network can get online.

Check the network configuration

  1. Press the OK button to open the phone menu.
  2. Go to Status and check the IP address. If it shows 0.0.0.0, the phone is not receiving an address.
  3. Confirm the phone is set to DHCP: Menu > Advanced > Network > WAN Port > IPv4, then select DHCP.

Firewall and firmware

  • Ports - make sure the ports needed for SIP and RTP traffic are open on your firewall.
  • Firmware - check the Yealink support site for a newer firmware version.

Last resort

Perform a factory reset: Menu > Settings > Advanced, then enter the admin password to reach the reset option.

If none of this helps, call or text 1 (800) 200-9018.

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