RSSI / Signal SIM800l

 Value RSSI dBm Condition

2 -109 Marginal

3 -107 Marginal

4 -105 Marginal

5 -103 Marginal

6 -101 Marginal

7 -99 Marginal

8 -97 Marginal

9 -95 Marginal

10 -93 OK

11 -91 OK

12 -89 OK

13 -87 OK

14 -85 OK

15 -83 Good

16 -81 Good

17 -79 Good

18 -77 Good

19 -75 Good

20 -73 Excellent

21 -71 Excellent

22 -69 Excellent

23 -67 Excellent

24 -65 Excellent

25 -63 Excellent

26 -61 Excellent

27 -59 Excellent

28 -57 Excellent

29 -55 Excellent

30 -53 Excellent

bool res = modem.isGprsConnected();

  DBG("GPRS status:", res ? "connected" : "not connected");

  String ccid = modem.getSimCCID();

  DBG("CCID:", ccid);

  String imei = modem.getIMEI();

  DBG("IMEI:", imei);

  String imsi = modem.getIMSI();

  DBG("IMSI:", imsi);

  String cop = modem.getOperator();

  DBG("Operator:", cop);

  IPAddress local = modem.localIP();

  DBG("Local IP:", local);