Notify Mobile Companion App Devices

[Grumblezz (Sander)]

I have just updated the script to version: 2025.09 Release Improved devices validation · Grumblezz/Home-Assistant-Notify-Mobile-Companion-App-Devices

What’s Changed

This change will make sure that only correct devices, registered via the Mobile_App, will be notified. When passing any device, then in the previous version it would have tried to send a notification to it, but when the device is not part of the Mobile_App integration then it would fail. This fix fixes that issue, so only correct device_trackers can be used.

Be aware, that this script still has to rely on the find-and-replace to convert it from a device_tracker.<device_abc> into notify.mobile_app_<device_abc> , so make sure that you follow the Troubleshooting | Home Assistant Companion Docs

[Grumblezz (Sander)]

So this one of the most recuring questions. Please check : Notify Mobile Companion App Devices - #92 by Grumblezz

Also please try the latest version 2025.09 which I just released. See if that helps as well

[Grumblezz (Sander)]

Could you try the latest version 2025.09 and let me know. Then check the trace for any clues:

[earmin (Armin)]

Could you help more with that? I have the same issue with 2025.09 after renaming the device. “Action notify.mobile_app_<old_device_name> not found”.

Update: I just found out how to update the device_tracker Entity ID and it solved the issue:

Thank you!