Get the current signal strength.
The returned value should be interpreted as follows:-
0 = none
2..30 = -109dBm ... -53dBm
31 = -51dBm or better
99 = not known
Where DroneCell is the name you have given to the device in Project Designer.
Assuming your device is called myDroneCell in Project Designer then:-
uint8_t signalStrength = myDroneCell.getSignalStrength();