If you do not see "Reboot system now" and instead see a dead Android robot with a red triangle, you have not entered recovery mode correctly. Force a restart (hold Power for 20 seconds) and try the button combo again. Usually, you must release the Power button right as the VERTU logo appears, but hold Volume Up.
Once the reset is complete, the phone will restart and prompt you to set it up from scratch, as if it were brand new. How to Hard Reset VERTU Signature
: Press and hold Volume Down + Power simultaneously. If you do not see "Reboot system now"
Enter your security password (the default PIN is often or 1234 ). Confirm the action to start the reset. Wait for the device to complete the operation and restart. How to Hard Reset VERTU Signature