Instruction
1
If you are the owner of the phone, contact the manufacturer to get the codes reset. These codes depend on the phone model. After you get them, enter them using the phone. Depending on what code you used, you either reset the firmware, which will reset settings or reset settings.
2
If the phone is not yours, was purchased or found, or no way to contact the manufacturer, reboot the phone. For this you need a usb wire, a program for updating the firmware and new firmware. All of this can be found on the Internet. Don't forget to save the phone's firmware, which is at the moment in order to recover data in case of unsuccessful flashing.
3
If your phone has been lost the password to the SIM card, use the PUK code through which you can recover the password. If you don't know it, contact your cellular operator, providing proof of ownership of the SIM card. To do this you will need to contact the operator's office, with your passport to identify you as the owner of the SIM card.