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

reset Samsung SCH-R860 Caliber hard reset

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.

Phone 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 reset r860 phone to turn off the phone (if on). Press both Volume up + Lock reset r860 phone(power on) + CALL + END keys together. Leave comment.

reset r860 phone

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.