I downloaded the latest firmware from the website:
Reolink_video_doorbell_wifi_v30032152401262240_IPC_DB.zip

Firmware installed fine. no issues. seems normal features are still working.
I can change the following settings in the App:


Unfortunately, if I leave the setting screen, and come back the setting has been disabled again.

With some further testing I could get the long-awaited call style notification to work, and it looks like this:


Now for the bad news. It only works if I am IN the setting screen... and only once. If I toggle the setting OFF and back ON again I can get the notification again.
If I leave the setting screen or close the app, it does not work.

In summary. Progress, but It's not working yet.. At least there is finally some proof of life with this.

@artech YEah... Not user-friendly... That would typically be the case if it doesn't work

@joseph_1979 Yes.. I just assumed this is a bug, as a friend of mine has also bene testing, and he is getting the "call alert" whilst his phone is locked.... so... not sure..

@joseph_1979 I don't particularly care what method they pick to implement. For me, the basic notification was the issue. They seem to have at least implemented something on that front. What I tested was NOT a notification. it was a fullscreen call notice (like a call) with a ringtone that repeats until answered, as can be seen in my screenshot. AFAIK, this is new? Your comment on SIP/VOIP would of course be better, but I'd rather not wait another year.....

I downloaded the latest firmware from the website:
Reolink_video_doorbell_wifi_v30032152401262240_IPC_DB.zip

Firmware installed fine. no issues. seems normal features are still working.
I can change the following settings in the App:


Unfortunately, if I leave the setting screen, and come back the setting has been disabled again.

With some further testing I could get the long-awaited call style notification to work, and it looks like this:


Now for the bad news. It only works if I am IN the setting screen... and only once. If I toggle the setting OFF and back ON again I can get the notification again.
If I leave the setting screen or close the app, it does not work.

In summary. Progress, but It's not working yet.. At least there is finally some proof of life with this.