Boron Cellular Signal

[ScruffR]

Is this a 2G/3G or an LTE Boron?

I know there were issues in the past, but they shouldn't be present in the more recent versions.
You could try this tho'

Boron LTE and Cellular.RSSI() - funny values

It should be available. It is a method of CellularSignal class. CellularSignal s = Cellular.RSSI(); auto rat = s.getAccessTechnology(); float strengthVal = s.getStrengthValue(); float strengthPercentage = s.getStrength(); float qualityVal = s.getQualityValue(); float qualityPercentage = s.getQuality();