If you see , your text message was not sent.

1. Check your signal strength.

   Weak signal from your cellular provider is a common cause of unsent messages. In the status bar, see how many bars your network connection has. If you see only one or two bars, change locations to improve your signal strength, particularly if you are indoors.

2. Open the conversation and resend the message.

1. Change your preferred network to Global. (Not all carriers support this feature.)
2. If you recently switched from iPhone and are having trouble sending messages to or receiving them from an iPhone, your phone number may still be associated with iMessage. You need to deregister your account.
3. Contact your carrier.

1. Check that you have not disabled permissions for the Messages app. If any permissions are turned off, turn them on and try using the app again.
2. Force stop the app. This completely shuts down the app, including any background services that may be causing your issue.

3. Uninstall any recent app updates.

   Touch & hold , then tap App info > > Uninstall updates.

4. Clear the app’s cache. This frees up space by removing temporary files.
5. Reset the phone.

If your keyboard has problems, like a missing spacebar:

1. Check for updates to your keyboard app.
2. Turn your phone off and then on again.
3. Clear the cache for the keyboard app.

If you’re having problems with messaging apps that you installed:

1. Check for updates to the app.
2. If you can open the app, touch or > Help and look for troubleshooting information.
3. Turn your phone off and then on again.
4. Clear the app's cache.