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  • I tried to make my SIM800 as server by making the request from the mobile, but now I can't send data from SIM800 and the data send by mobile is echoed back. Commented Jan 11, 2017 at 14:32
  • AT+BTGETPROF failed, so no sense making AT+BTCONNECT=1,<n> (where n should be SPP profile index on the list returned by AT+BTGETPROF). Make sure that SPP is listed first. Also did you get +BTPAIRING: message? If so answer with AT+BTPAIR=1,1 Commented Jan 11, 2017 at 18:43
  • Yes I know that there is no sense making AT+BTCONNECT. Yes I got the +BTPAIRING: message when I make the request from my mobile, but then my SIM800 enters into Server mode because of which I can't use AT+BTSPPGET and AT+BTSPPSEND Commented Jan 12, 2017 at 8:11
  • In server mode, module shall received +BTCONNECTING: "...","SPP" message - reply with AT+BTACPT=1 (shall return OK) and AT+BTSPPGET=0 (auto mode). Then you can do AT+BTSPPSEND. For client mode, isn't you module shall start the initiation? Commented Jan 12, 2017 at 9:17
  • For being in client mode, yes I should initiate, but the same problem occurs with me which I have posted in the image @Flanker. The server mode works well but whatever I send to SIM800, it is echoed back and I receive nothing at my terminal. Commented Jan 12, 2017 at 14:09