Problems with synchronizing speed dial buttons between Yealink MP56 E2 and Yealink EXP50

1. Update Firmware

You can go to the Yealink Device Management Platform (YDMP) or Teams Admin Center.

Check Yealink Firmware Portal

Minimum recommended version:

MP56 Teams edition: 122.15.0.x or later

EXP50 firmware: matching expansion version

2. Re-Sync Teams Account

Sign out of Teams on the phone.

Reboot the phone.

Sign back in using your Microsoft 365 account.

Wait a few minutes to allow Teams cloud sync to rebuild your contact cache.

3. Rebuild Speed Dial Manually

If automatic sync fails, manually set up the speed dials again after updating the firmware:

On the Teams phone:
Settings → Calls → Speed dial → Add contacts manually

Verify the changes also appear on the EXP50 module.

4. Check Microsoft Admin Center

If you are an IT admin:

Go to Teams Admin Center → Devices → Phones → [Device Name] → Health and Logs

Check for any synchronization or contact sync errors.

5. Contact Microsoft / Yealink Support

If it persists, contact:

Microsoft Support: report through Teams Admin Center.

Yealink Support: share logs; they can confirm if a patch is coming for your firmware build.