Gets and returns the name of the current network carrier.
scanner.getCurrentCarrier()
none
String : name of the current network carrier
getSignalStrength()`
Gets and returns the strength of the signal of the network the modem is attached to.
scanner.getSignalStrength()
none
String : signal strength in 0-31 scale. 31 means power > 51dBm. 99=not detectable
readNetworks()`
Searches for available carriers, and returns a list of them.
scanner.readNetworks()
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String : A string with list of networks available