Nano CH340G + SIM7600E-H: LTE insufficient signal despite strong network availability

Other Hardware Home Automation
13

i'm facing error in following code

delay(1000);
char shareit = 'm';
int Signal = gprs.getSignalQuality();
if ((Signal > -10)) {
Serial.print(F("Signalstärke unbrauchbar "));
while (c != 'w') {
c = Serial.read();
delay(1000);
}
}