How to Fix Android Messages Not Sending

Step by step

1. 30 sec

   Toggle Airplane Mode

   Swipe down from the top of your screen twice to reveal the Quick Settings panel. Tap the Airplane Mode icon to enable it, wait 10 seconds, and tap it again to disable it. This forces the device to re-establish a connection with your cellular network tower.

   Note: This clears transient network glitches without requiring a full device reboot.
2. 1 min

   Clear Messages App Cache

   Open Settings and navigate to Apps > See all apps > Messages. Select Storage & cache and tap Clear cache. Do not tap Clear storage unless you are prepared to potentially lose message drafts.

3. 1 min

   Verify SMS Center Settings

   Open the Messages app and tap your profile icon. Go to Message settings > Advanced and ensure the SMS Service Center (SMSC) number is correct for your carrier. If the field is blank or incorrect, contact your carrier support for the mandatory string.

   Note: Most modern Android devices auto-populate this, but manual entry is required if you switched SIMs.
4. 2 min

   Reset Network Settings

   Go to Settings > System > Reset options. Tap Reset mobile network settings and confirm the action. This deletes saved Wi-Fi networks and Bluetooth pairings, so ensure you have your credentials ready to reconnect.

   Note: This is the most effective method for solving deep-rooted cellular handshake failures.
5. 30 sec

   Check for Carrier Services Updates

   Open the Google Play Store and tap your profile icon. Select Manage apps and device, then locate Carrier Services. If an update is pending, install it immediately and restart your device.

   Note: Carrier Services is critical for RCS messaging features; keeping it updated ensures compatibility.