Why can't I text anymore on my phone? I was messing with the settings yesterday and now I can't send texts?
Call your carrier to get the message center number for your phone.
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.