Galaxy S20 Cannot Send Text Messages [Quick Fixes]

Tackled in this post is a relevant issue on the new Samsung Galaxy S20 that’s unable to send SMS or text messages. In case you need some input on how to deal with this issue, I’ve mapped out a quick guide, elaborating a few simple yet very effective solutions. Feel free to refer to this walk-through in case you would bump into a similar issue wherein your Galaxy S20 cannot send text messages for some unknown reasons.

Modern smartphones like the recently rolled out Galaxy flagship handsets are already capable of sending and receiving both SMS and MMS. For as long as all messaging requirements are met, SMS and MMS processing should be seamless. However, there are also several factors that can halt these messaging processes and so any of these devices could still end up unable to send or receive messages.

Read on to learn how to fix this problem.

Fixing a Galaxy S20 that cannot Send Text Messages or SMS

Time Needed : 10 minutes

Before you proceed, check and make sure that your phone is getting a good and stable signal, like at least 2 bars. If your phone is experiencing some signal issues, then that must be the main reason why you cannot send text or SMS messages on your Galaxy S20. In that case, you will need to deal with signal issues first. If there’s no problem with the cellular signal but still SMS sending still fails, try these subsequent methods to eliminate software-related factors that might have caused conflict and ruined your phone SMS features.

  1. Force close Messages app then restart.

    You can use the Recents Key to close all your apps including Messages at once. 
    To do so, simply tap the Recent icon to view all running apps and then tap the CLOSE ALL button to end them all. The Recent icon is located at the bottom-left corner of your phone, represented by three vertical lines.
    Alternatively, you can access the Settings-> Apps menu. Then from the Apps menu, tap the triple-dot icon or quick menu icon located on the top-right corner of the screen to view more settings and options. Select the option to Show system apps and then tap Messages to view its App info and execute the Force Stop command.
    Doing so will force-close the Messages app.
    After closing Messages, restart your phone to refresh its internal memory and operating system. It can also help eliminate random glitches caused by minor system conflicts. 

    galaxy s20 cannot send text sms messages - force close messages

  2. Toggle Airplane Mode on and off.

    This is one of the old tricks that’s been proven to work wonders to many smartphone users who have dealt with various network connectivity issues. It works by giving a simultaneous restart to all wireless features of the phone while clearing out any associated errors.
    To do the Airplane mode trick, simply go to Settings-> Connections-> Airplane Mode menu on your Galaxy S20. 
    From there, you can access the Airplane Mode toggle or switch for you to turn the feature On or Off. When you get there, tap the switch to turn Airplane Mode on. While Airplane Mode is turned on, restart your phone and then go back to the Airplane mode menu to turn the switch OFF again.
    It would take a few seconds for your device to re-establish wireless signals so just wait patiently. When the signal is steady, retry creating a sample SMS or text message then send it to your own number. 
    It’s problem solved if you receive the sample SMS. Otherwise, you will need to troubleshoot further.

    galaxy s20 cannot send text sms messages - airplane mode trick

  3. Delete old and unnecessary conversations.

    Old messages are supposed to be removed. By doing so, you can free up some space on your phone’s internal storage and at the same time clear out any corrupted messages or conversations containing some malware. If you haven’t already, then you should include old message deletion among the next possible solutions.
    To delete SMS messages and conversations on your Galaxy S20, open the Messages app from the Home screen then select the individual message that you'd like to remove.
    To delete an individual message within a conversation, expand the conversation to view individual messages then touch and hold on the message that you'd like to remove.
    To delete the entire conversation, touch and hold a conversation then mark the option to Select All. After selecting all the messages that you'd like to delete, tap the Trash icon then tap DELETE to confirm.
    The messages and/or conversations will no longer be seen in the Messages directory.

    galaxy s20 cannot send text sms messages - delete messages conversations

  4. Clear Messages cache and data.

    Like any other apps, the Messages app also stores temporary files as cache and data. These files are typically used by the system to execute repetitive tasks quicker than the first execution. However, as temporary files and cache accumulate, the device’s performance may also become adversely affected. This is usually the case if any of the cached files contained corrupted data. To eliminate these bad files, clearing app cache and data from time to time is likewise recommended.
    To clear cache and data on Messages, navigate to Settings-> Apps menu. Then find and select Messages from the list of apps. Next, tap Storage then Clear cache or Clear data at the bottom-right of the screen.
    After clearing cache and data, restart your phone and then relaunch the Messages app.

    galaxy s20 cannot send text sms messages - clear cache and data

  5. Reset network settings.

    If the prior methods don’t yield a positive outcome, then you may have to consider resorting to some settings reset. It’s possible that some settings on the phone might have been re-modified or configured erratically and that has resulted in some conflicts with the phone’s SMS functions. 
    There are different types of resets you can do on your phone but the most suitable reset to deal with network-related issues is a network settings reset. 
    On the Galaxy S20, you can use the Reset network settings command to clear out all customized network settings and restore the default network configurations.
    To do this, navigate to Settings-> General management-> Reset menu and then tap the option to Reset network settings. If prompted, tap Reset settings, enter your PIN or password then tap Reset settings again to confirm.
    All your recent network settings will then be deleted and replaced with the default values and options. 

    galaxy s20 cannot send text sms messages - reset network settings

Tools

  • Android 10, One UI 2.0
Materials
  • Galaxy S20, Galaxy S20 Plus

Still Cannot Send a Text Message on your Galaxy S20?

The above procedures are usually good enough to eliminate random system issues that can adversely affect the SMS messaging functions of the phone. If none of them works and you still cannot send a text message, check the Message center number on your phone. 

An SMS centre number serves as the primary code/key to hand SMS operations of a wireless network. The SMS centre will forward the SMS message to the destination, thus it’s main function is to route and regulate SMS messaging process. 

To access and edit the Message Centre number on your galaxy s20, just open the Messages app and then tap the Menu icon to view quick options. From the given options, tap Settings-> More settings-> Text Messages. In this menu you should see the Message centre number information for you to modify, if necessary.

To verify if the message centre number on your phone is correct, consulting your wireless carrier or service provider would be necessary. You can ask the customer care to edit the message centre number on your phone for you or get the correct information and modify the one on your phone by yourself.

Remounting the SIM is also a potential solution, especially if the underlying cause is a corrupted or dislodged SIM card in the tray.

Also, don’t forget to check your account status. Account-related issues are also among the possible reasons as to why incoming and outgoing services aren’t working as intended.

Hope this helps!

And that covers everything in this troubleshooting guide. Please keep posted for more comprehensive troubleshooting guides and tutorials that would help you make the most of what the new Samsung galaxy s20 has to offer.

You can also check out our YouTube channel to view more smartphone video tutorials and troubleshooting guides.

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