Samsung Precedent SCH-M828C hard resetTurn your M828 off. Press and hold the volume up and camera button while powering on the phone. when the recovery screen comes on, chose wipe cache partition then factory restore. as usual,
Reset you Samsung Precedent Your device freezes or has fatal errors
If your device freezes or hangs, you may need to close programs or reset the device to regain functionality. If your
device is frozen and unresponsive, press and hold the Power key for 10-15 seconds. The device will reboot automatically.
If this does not solve the problem, perform a factory data reset. In Idle mode, open the application list and select
Settings → Privacy → Factory data reset → Reset phone → Erase everything.
Select Settings > Privacy > Factory data reset: Reset your settings to the factory default values and delete all your data.
Important!: Back up your important data before you perform a factory reset of the device.
Press Application button, then Settings > Reset settings: Reset your settings to the factory default values.
While using your device, be sure to back up important data. When disposing of your device, back up all data and then reset your device to prevent misuse of your personal information.
Use this method to hard reset your Samsung Precedent: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
Note: If the device is ever reset to its factory default parameters, locally stored contacts can be lost.