Forgotten passcode

I can’t recall the passcode to my iPhone 6.

To unlock your iPhone, follow the steps described in the Apple article:

(< iOS 15.2) -> If you forgot your iPhone passcode

If you forgot your iPhone passcode - Apple Support

• If you don't have a computer and you can't borrow one, you need to go to an Apple Retail Store or Apple Authorized Service Provider for help.

connect it to a computer using the cable and read

If your Apple ID is locked or disabled - Apple Support

if you don't own a computer then you will have to use a computer from a friend/relative/public library or computer store