3G Electron returns cellular qual of 0

I have a 3G Electron at a location where the cellular quality intermittently drops to 0. When this happens the device doesn’t necessarily lose connection, but uptime appears to degrade.

I just saw in the documentation for cellular.RSSI() “Note: qual is not supported on 2G Electrons (Model G350) and will return 0.” Does this also mean that if a 3G Electron falls back to 2G, the quality will also go to 0?