Why can't I send text (SMS) Messages?

Last modified : Jun 26. 2018
I cannot send text (SMS) messages

There are two possible scenarios:

1 Unable to send text messages to a specific contact, but can send messages to other contacts

If there is only one contact you're unable to send any text messages to, the problem very likely your network provider and not your device. Please contact your network operator for service status updates.

Also check:

  • Do you have the contact's number saved as +614 or 04? Can you send to one but not the other?
  • Do you have the contact's name saved with any Emoji's? Can you send to contacts without Emojis in their name?
  • Can you try your SIM in another device? 
  • Do you have good network coverage? Do texts not send at certain times of the day, or when you're in certain areas?
2 Unable to send text messages to any of the contacts

If you're unable to send any SMS (text) messages to any contacts, try checking your network operator's message centre number stored in your device's settings. It is either missing or incorrect.

Australian Telco Message Centre Numbers:

  • Telstra +61418706700
  • Optus +61411990001
  • Vodafone +61415011501

Please Note: Steps were created from Android OS Oreo 8.0. Steps may slightly vary according to the Android OS your device is running. 

If the below steps do not work, please perform a Factory Data Reset. 

Check the Messages App

Check the Message Centre numberClick to Expand
1 Tap on the Messages app.
Home Screen
2 Tap on More Options (the three dots) > Settings.
Message Settings
3 Tap on More Settings.
More Settings
4 Tap on Text Messages.
Text Messages
5 Tap on Message Centre and enter the message centre number provided by your carrier. Tap on SET to confirm.
Message Centre
Clear the Messages app dataClick to Expand
1 Tap on Apps.
Tap on Apps
2 Tap on Settings.
Tap on Settings
3 Tap on Apps.
Tap on Apps
4 Scroll down and tap on Messages.
Scroll down and tap on Messages.
5 Tap on Storage.
Tap on Storage

Please Note: this will delete all TXT messages and MMS so make sure you backup before this step 

Tap on Clear Data
7 Restart your device and then try sending a text message again.
Test a different messaging applicationClick to Expand

It can be worth testing another messaging application to determine if there is potentially an issue with an update to the Messages app. 

Android Messages is the Google stock messaging application and is simple enough to install. 


1 Open the Google Play Store app, then tap in the white bar at the top to search
Open the Google Play Store
2 Search for 'Android Messages', Install and Open the App
Install Android Messages

On opening the app you'll be asked to Allow permissions and set Android Messages to Default - the app will not work if you select 'No' to any of these options.

Deleting the Android Messages app after testing will automatically revert Samsung Messages to default (or simply open Samsung Messages to be prompted to change it back).

3 If a second messaging application is unable to send SMS messages - we know it is more likely to be a network issue.

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