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How to solve sms error 21 in airtel, ideal, reliance, vodafone and jio

By LogicalEdu
I have seen that some of guys reporting that they can't send message from their mobile. While trying to send sms they got a error saying error 21.
I am not sure that this method will work for all of you, but you should try this once.
Try this step by step:-

1. Go to phone's dialer and dial *#*#4636#*#*

2. This will open a new window. Here tap on phone information.


2. Now scroll down for SMSC.


4. Here tap on refresh.


5. Now your SMS service center number will appears , just check them if they are ok, than tap on update.

That's it. You have done. I hope this will fix your problem. If still you are facing problem let me know in comments section i will help you.

Comments

  1. UnknownFebruary 23, 2019 at 9:29 PM

    Not helping this method

    ReplyDelete
    Replies
    1. AnonymousApril 7, 2022 at 1:40 PM

      How To Solve Sms Error 21 In Airtel, Ideal, Reliance, Vodafone And Jio >>>>> Download Now

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      Delete
  2. UnknownMarch 25, 2019 at 10:03 PM

    No it's not working for me as well

    ReplyDelete
  3. div0710April 24, 2019 at 2:23 PM

    This comment has been removed by the author.

    ReplyDelete
  4. UnknownSeptember 16, 2019 at 10:06 AM

    Not helping this method

    ReplyDelete
  5. AnonymousSeptember 17, 2019 at 7:44 AM

    Same problem

    ReplyDelete
  6. UnknownSeptember 17, 2019 at 9:20 PM

    Not helping still facing issues

    ReplyDelete
  7. UnknownOctober 4, 2019 at 3:24 PM

    I was having the same problem. It was resolved by recharge of some talk time. Now all mobile calls are free but to send SMS for any special number you need to recharge with talk time say like Rs. 10. Then try to send the SMS. It will work.

    ReplyDelete
    Replies
    1. AnonymousJanuary 4, 2020 at 6:17 PM

      Thanks for the suggestion. It also worked for me after recharging with a minimum balance of Rs 10.

      Delete
    2. UnknownApril 13, 2020 at 3:28 PM

      Your suggestion worked. Thank you.

      Delete
    3. UnknownSeptember 16, 2021 at 8:56 PM

      The suggestion of recharging your no with Rs 10 actually worked for me
      Thank you for the suggestion!

      Delete
  8. UnknownJanuary 21, 2020 at 1:30 PM

    It is not working with this method .

    ReplyDelete
  9. Neha duaJanuary 14, 2021 at 11:49 PM

    I am unable to send message from idea no. I have tried all the methods but nothing is working ..what to do?

    ReplyDelete
  10. UnknownAugust 5, 2021 at 4:04 PM

    Not solve , I am unable to send message from Vodafone . I have tried all the methods but nothing is working ..what to do?

    ReplyDelete
  11. AnonymousApril 7, 2022 at 1:39 PM

    How To Solve Sms Error 21 In Airtel, Ideal, Reliance, Vodafone And Jio >>>>> Download Now

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    How To Solve Sms Error 21 In Airtel, Ideal, Reliance, Vodafone And Jio >>>>> Download LINK

    >>>>> Download Now

    How To Solve Sms Error 21 In Airtel, Ideal, Reliance, Vodafone And Jio >>>>> Download Full

    >>>>> Download LINK bT

    ReplyDelete
  12. AnonymousOctober 21, 2022 at 6:52 PM

    RECHARGE THE PHONE WITH SOME TALKTIME TO BE ABLE TO SEND MESSAGES TO SPECIAL NUMBERS. THE ABOVE SYSTEM MENTIONED IS INCORRECT AND DOESNT WORK

    ReplyDelete

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