On the Jolla C2, the signal bar for 4G appeared to be hardcoded to 100% before the actual update 5.0.0.76. Now, it usually shows one bar most of the time, but it rarely goes up to 2 till 4 of the 5 bars when near the antenna towers of my carrier.
I compare it to Android with the same carrier: when you connect there to WLAN, the bars increase (Voice over WLAN?), so this seems to be a form of manipulation regarding signal strength when using WLAN on Android. Therefore, this is not really comparable 1:1 to SFOS, and I’m starting to believe that SFOS shows the true reality of the signal strength.
While signal strength is important for maintaining a connection, signal quality is crucial for ensuring that the connection remains reliable and efficient. A device can show strong signal bars but still experience poor performance if the quality is low.
Is seems that SFOS displays signal strength rather than signal quality. Since I have no issues with mobile data connections or VoLTE calls in quality, this appears to be some kind of “cosmetic error”.