Use this method to hard reset your Samsung R860 Caliber phone: 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.
Reset Phone Samsung MetroPCS Caliber R860 Phone
or via phone menu
Reset Phone returns all Settings to their factory default values.
1. From the Security menu, select Reset Phone. You are prompted to confirm that you want to restore default
settings (except for the Contacts and Voice Dial).
2. To return to the Security sub-menu without resetting the phone, press No. To restore default settings, press Yes.
Note: The R860 default lock code is the last four digits of your telephone number.
This option causes the Phone Number screen to appear in the display and show the ten-digit number assigned to your phone by
your Wireless Provider.
1. From the Settings menu, select Phone Info ➔ Phone Number.
Tip: You can also access Phone Info from Main Menu The phone number assigned by your Wireless Provider
appears in the display.
If you know the hard reset using buttons / keys, pls leave a comment. All comments are welcome! :)
Or try this
This is not sure!!! Try this or something like that: 1. Press and hold to turn off the phone (if on). Press both Volume up + Lock (power on) + CALL + END keys together. Leave comment.