How to reset your iPhone Duo using your Mac or PC if you forget your passcode
Use a computer to get your iPhone Duo into recovery mode so you can erase it and set it up again.
If you forget your passcode, try Passcode Reset first. If you can’t use Passcode Reset, you can then reset your iPhone or iPad without a computer to regain access to your Apple device. Finally, if you can't use Passcode Reset and can't reset your iPhone or iPad on your device, you can reset your iPhone or iPad with a computer.
What you need
Mac or Windows PC
Cable that could charge your iPhone Duo
Internet connection
Up to 60 minutes
To access your iPhone Duo after you forget your passcode, you must reset your device. This process erases the data currently on your iPhone Duo.
If you previously turned on Activation Lock, you will need your Apple Account password when you set your iPhone Duo up again.
Turn off your iPhone Duo
Unplug your iPhone Duo from the computer if it's connected.
Tap and hold a volume button and a side button.
Drag the slider to turn off your iPhone Duo, then wait a minute to make sure that it turns off completely.
Put your iPhone Duo in recovery mode
Connect your iPhone Duo to your computer using a USB cable.
Keep your device connected as you press and hold the side button.
Keep holding the button while the Apple logo appears. Do not release the button until an image of a computer and a cable appears, then let go.
If you see the passcode screen, you need to turn off your iPhone Duo and start again.
If you need to reset your iPhone Duo with a computer, you don't have a computer, and you can't borrow one, you can go to an Apple Store or Apple Authorised Service Provider for help.
If the buttons on your iPhone Duo do not work and you can't reach the recovery mode screen, you might need service. Get a service
Restore your iPhone Duo
Locate your iPhone Duo in the Finder or the Apple Devices app on the computer that it's connected to. (Learn how to find your connected device.)
Choose Restore when you see the option to Restore or Update. Your computer downloads software for your device and begins the restore process. If the download takes more than 15 minutes and your device exits the recovery mode screen, let the download finish, then turn off your iPhone Duo and start again.
Wait for the process to finish.
If you use a Windows PC to reset your device, you need Apple Devices installed. Get Apple Devices from the Microsoft Store.
Follow the onscreen instructions to set up your iPhone Duo
Once the restore process finishes, the Hello screen will appear on your iPhone Duo. Disconnect your device from the computer and set up and use your iPhone Duo.