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  1. #1
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    Problem in receiving SMS with SIM800C

    I am using sim800c gsm module in my device and I am facing SMS receiving problems. I am from India where there are different sim card companies such as Jio, tata docomo, Vodaphone, Airtel.I had inserted Airtel sim card in the device which contains SIM800C GSM module and it connects properlly to the network. Now I try to receive SMS on my mobile phone with different sim card companys. I had tried to receive SMS in each sim card company. Now the strange thing happens in tata docomo sim I received SMS properly but in jio sim I get a blank message and in rest of the company SMS did not even delivered.

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  2. #2
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    Re: Problem in receiving SMS with SIM800C

    Hi,

    To me it sounds as if the problem is provider related, not SIM800C related.

    Sending/receiving the first SMS after signed in to a provider may be delayed.

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  3. #3
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    Re: Problem in receiving SMS with SIM800C

    Quote Originally Posted by KlausST View Post
    Hi,

    To me it sounds as if the problem is provider related, not SIM800C related.

    Sending/receiving the first SMS after signed in to a provider may be delayed.

    Klaus
    It is strange because the module is able to make a call to all sim card company and also when I send SMS from my mobile with different sim comany then also GSM module is able to recive message perfectlly.
    And I had noticed that this problem arises at different places and at some place device works perfectly and I had also checked network strength and battery voltage that both things are perfect.



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  4. #4
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    Re: Problem in receiving SMS with SIM800C

    Different networks may use different SMS alphabets. If your software is only prepared to receive text mode messages, some messages may not be decoded properly.



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