how can get LTE signal strength at onsignalStrengthsCanged in delphi firemonkey

  

I want get LTE signal strength on PhoneStateListener.onSignalStrengthChanged but i don’t know what do it.
it will be appreciate to help me.

procedure TPhoneStateListener.onSignalStrengthsChanged(signalStrength:JSignalStrength);
begin
//how can get LTE signal strength
end;

Thanks.

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