How to fix message settings on the LG Xpression?

Just do a master reset to restore the settings stored in the handset memory back to default values.

Tori, here's how to do a master reset:

1. From the standby screen, tap the Menu icon.
2. Tap the Settings tab, then tap Phone.
3. Tap Reset Settings.
4. Tap Master Reset.
5. Tap Yes to confirm.
6. Enter the device's password, then press OK. source

NOTE: The default password is 0000.

Call your carrier to get the message center number for your phone.

This piece was cogent, well-wrttien, and pithy.