This is the promised update on connectivity testing:
Phone is Samsung S22 Ultra with A13. I had 3 sensors connected to LM4: WS07, WS08 and a heart rate chest strap TICKR 7106. The TICKR stayed connected all the time and data was received with no interruption (checked the graph after the trip). I have used the TICKR several times and connectivity is always rock solid.
However WS07 and WS08 have connectivity issues. First I did several tests with screen on for >30 minutes, LM4 in the foreground and locked, and didn't touch the screen. When I checked the phone after >30 minutes, the LM4 sensor menu said the WS07/WS08 were connected, but no data received. I had to either turn the screen off and then on again (as experienced by another user in this thread) or tap Disconnect followed by Connect to reestablish data transfer.
Then I did several tests with screen off. Same issues. Each time I turned the screen on, LM4 showed no temperature data initially. Some times after 3-5 seconds, temperature was shown again, but some times I had to tap Disconnect/Connect to reestablish data transfer.
At home I tested WS07/WS08 with the SensorBlue app with screen on all the time. After exactly 30 minutes the app stopped showing data. By putting the app into background and then back into foreground, data transfer was reestablished. If I did this operation every 25 minutes while data transfer was still ok, another 30 minutes of operation was achieved.
Conclusion: It seems to be a 30 minutes timeout in the sensors themselves. Confirming what another user experienced and posted earlier. With LM4 turning the screen off and on before the 30 minute timeout is a workaround. This gives you another 30 minutes each time. Must be some sort of background communication with the sensor when the screen is turned on again. If LM4 could send some sort of command to the sensor every 25 minutes or more often, connection should be stable.
Phone is Samsung S22 Ultra with A13. I had 3 sensors connected to LM4: WS07, WS08 and a heart rate chest strap TICKR 7106. The TICKR stayed connected all the time and data was received with no interruption (checked the graph after the trip). I have used the TICKR several times and connectivity is always rock solid.
However WS07 and WS08 have connectivity issues. First I did several tests with screen on for >30 minutes, LM4 in the foreground and locked, and didn't touch the screen. When I checked the phone after >30 minutes, the LM4 sensor menu said the WS07/WS08 were connected, but no data received. I had to either turn the screen off and then on again (as experienced by another user in this thread) or tap Disconnect followed by Connect to reestablish data transfer.
Then I did several tests with screen off. Same issues. Each time I turned the screen on, LM4 showed no temperature data initially. Some times after 3-5 seconds, temperature was shown again, but some times I had to tap Disconnect/Connect to reestablish data transfer.
At home I tested WS07/WS08 with the SensorBlue app with screen on all the time. After exactly 30 minutes the app stopped showing data. By putting the app into background and then back into foreground, data transfer was reestablished. If I did this operation every 25 minutes while data transfer was still ok, another 30 minutes of operation was achieved.
Conclusion: It seems to be a 30 minutes timeout in the sensors themselves. Confirming what another user experienced and posted earlier. With LM4 turning the screen off and on before the 30 minute timeout is a workaround. This gives you another 30 minutes each time. Must be some sort of background communication with the sensor when the screen is turned on again. If LM4 could send some sort of command to the sensor every 25 minutes or more often, connection should be stable.