Problem
Your Yealink device is showing “No Service” on your LCD screen preventing you from being able to access your account.
Troubleshooting Steps
There could be a few different reasons for this issue. We have listed the most common issues that we have found below in their own individual sections.
Reboot the Device
The first troubleshooting step we recommend is to reboot the device. The most common methods to reboot are listed below:
Physical Reboot
- Turn the phone over and unplug the power cable for between 10 and 20 seconds.
- Plug the cable back in and wait for the device to reboot.
Please note: If you do not see a power cable, this means this device is using PoE (Power over Ethernet) if this is the case, unplug the ethernet cable for between 10 and 20 seconds and then plug it back in, waiting for the device to finish booting up.
Softkey Reboot
- Locate, press and hold the X (or cancel) key until you see a prompt on the screen. (For the Yealink T57W this is the * key)
- Press the “Ok” button to confirm the reboot of the device.
- Wait for the device to reboot and see if this resolves the issue.
Check Cables
Check and ensure that the Ethernet cable is plugged into the correct port. There are two ports that an Ethernet cable can plug into, please ensure this is the one marked “Internet” as shown below.
We would also suggest checking and ensuring that the cables are not damaged at all. If the cable appears damaged try swapping this out with another cable that looks to be in good order. A damaged Ethernet cable can cause the phone to cease functioning.
As you can see in the above image there is a port for your computer labelled PC. This is a port that connects to your computer so that your phone and computer can share the same router port. If you are using this port, please ensure that the PC port is connected to the PC and the Internet port is connected to your router.
If the issue continues you may want to consider completing a network restart if possible.