I am giving my old iPhone 4 to my granddaughter but can’t remember my unlock pin code

Hi

Follow the instructions here:

• If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support
• What to do before you sell or give away your iPhone, iPad, or iPod touch - Apple Support

Hi

Turn iPhone off Make sure your pc is running the latest iTunes 12.7.2 or later.

Connect lead to USB on your pc Press just the power button down on iPhone don't let go Connect lead to iPhone keep power button pressed down until pc sees iPhone Then wait for restore you may need to do this more than once Before it works.

Cheers

Brian 🇬-1F1E7;

This might help.........http://www.syncios.com/iphone/how-to-unlock-iphone-without-pin-code-password.htm l