Fix: BSNL SMS Messages Not Sending Problem

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One of my friends asked:

Why I am not able to send text messages from my Bsnl Sim? Whenever I send text messages and close the app. After sometime it say “Message sending failed” so when I checked, message wasn’t sent and it was having a red refresh button before it and when I tap it, it does not work? Currently it is happening with me persistantly! What’s the solution for this?

Text messaging is one of the oldest forms of communication. But still, text messaging is a secure and reliable method of communication. and verification too.

Even though the messaging features can work very well even without the network connection, sometimes the messaging feature doesn’t work properly.

Although text messaging is very good for communication, sometimes it may give you errors related to sending text messages. So, to fix the issue that the text message failed to send from the Bsnl sim you can try the tips listed below in the article.

Solutions to Bsnl SMS not sending problem:

1. Top-up Recharge:

Most of the time the problem is related to recharge & balance. A low balance on your Bsnl number can cause this problem. Thus to solve this issue first check your talk time balance by dialing *123#. If it is low then recharge with at least 11 Rs. In my case, it worked only once.

So my suggestion is that you should call Bsnl customer care service which will definitely guide the minimum recharge plan that can activate your sim card validity and indirectly the SMS service of your sim. So I recharged with that and my SMS-sending issue was solved.

So try recharging your sim card After recharging check again if the messages are sending or not, if not then try the next solution.

2. Change Sim preference:

If you have two sim cards then check if you have set the right sim card for messaging or not.

To check messaging preference go to Settings > Sim cards & Mobile Networks > SMS Messages > Choose the right sim card which can send messages.

Set sim for messaging from Settings

In some smartphones, you may not see this option, in this situation open the Messaging app and set the sim card from there as shown in the screenshot below.

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Set sim for messaging from Messaging

After setting up your sim preference for messaging check message is sent or not if not then try the next solution.

3. Clear the Cache Of the Messaging app

The cache is the files that are used to make future processes faster, which can be deleted, and deleting them will not create any major problems.

To clear the cache of the Messaging app follow the steps given below:

  1. Open ‘Settings App‘ and go to the ‘Apps‘ section.
  2. Now find the Messaging app and open the App info of it.
  3. Now Tap on Clear Data.
  4. Find Clear Cache and tap on it.

Then again try to open the app and try to send the message to check if is sending or not. If the problem still exists then follow the next solution.

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Clear Cache of Messaging app

4. Force Stop Messaging app

Similar to the Clearing Cache Force stop option will not delete any important file or will not interrupt any regular processes.

To Force Stop the Messaging app follow the steps given below:

  1. Open ‘Settings App‘ and go to the ‘Apps‘ section.
  2. Now find the Messaging app and open the App info of it.
  3. Now Tap on Force Stop.
  4. One popup will come for confirmation then confirm it.

and then again try to open the app and try to send the message to check if is sending or not. If the problem still exists then follow the next solution.

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Force Stop Messaging app

5. Restart the Smartphone

Sometimes clearing cache and force stop may not work if your phone has internal misconfiguration thus to solve this error just simply restart your smartphone.

6. Change Bsnl SMS Center Number in Android & iOS

An SMSC number is responsible for handling the SMS operations of a wireless network. When an SMS message is sent from a mobile phone, it will reach an SMS center first. The SMS center then forwards the SMS message to the destination.

Thus if you have set the wrong SMSC number then you will get of SMS not sent. thus to solve this error you should Update your SMSC number.

There is a different procedure for Android and iOS so follow them according to your device system.


  1. Dial – *#*#4636#*#* on Keypad.
  2. It will automatically open the ‘Testing’ settings. Now if you have two sims in your Android phone then choose accordingly. In my case, I opened ‘Phone information1’.
  3. Now scroll down and try to find the ‘SMSC’ option And tap the “Refresh” button. If it doesn’t work then type your network operator’s SMSC number of your area and tap Update. I am from Maharashtra that’s why I typed Maharashtra’s SMSC number.
update smsc airtel
Changing SMSC number in Android


  1. Dial *5005*7672*SMSCNUMBER# on your iPhone’s dialer & tap call.
  2. Replace SMSCNUMBER with your network operator’s SMSC number of your area.
  3. After that The message “Setting interrogation succeeded, Service Center Address” will appear on the screen.
  4. After changing the SMSC number check whether your problem is solved or not.
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Changing SMSC number in Android

7. Call Customer Care

If you have followed all the above methods and all of them failed then try calling customer care of Bsnl.

In India, Bsnl has 121 number for customer care service.

After calling them, explain your fair situation to them, they will definitely help you out with this situation.

If you don’t want to read the article it’s fine, we have found a video that may help you out.


How can I activate BSNL outgoing SMS?

Make sure that your phone is connected to a mobile network and that you have a valid SIM card installed. Then Check if you have sufficient balance in your account to send an SMS. Some mobile plans may have a limit on the number of SMS messages you can send, or you may need to purchase an SMS pack to send SMS.

Go to the messaging app on your phone and compose a new message. Enter the recipient’s phone number and the message you want to send. Send the message. If you are able to send the message successfully, it means that outgoing SMS is activated on your BSNL mobile phone.

If you are unable to send the message, you may need to check the settings on your phone or contact BSNL customer support for assistance.

Why are my BSNL messages not sending?

Several Reasons that may cause BSNL SMS not to send are:
Low strength of a network.
Insufficient balance in your account to send SMS.
Mobile plans may limit the number of SMS you can send.
SMS messages have a limit of 160 characters
Wrong SMS Center Number
The recipient’s phone or mobile carrier may be experiencing issues.

How can I restore/ reset my Airtel SMS settings?

On Android dial *#*#4636#*#* on the Keypad, now go to Phon information 1 then try to refresh your SMSCfrom here and check if the problem is solved if the problem persists then try to change your SMSC according to your geographical area

How to activate SMS service in Airtel Prepaid & postpaid?

In prepaid service, you have to recharge your sim with the validity plan and have sufficient balance to send an SMS. In the case of Postpaid service, there is no hard rule to sending SMS just confirm your SMS plan and contact BSNL for more help.


We have shared all possible solutions you need to know about the BSNL message not sending problems. If you still have any kind of issues or problems then feel free to comment below. We will help you as soon as possible.

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