Selling my iphone, what should I do?

I wanna sell my iphone 4s and I use a passcode which is 1111. Now I went to Settings > General > Reset > Erase All Content and Settings then I was asked to enter a passcode but 1111 won't work!
Is there a factory passcode for that, if not then what should I do?

Try the last 4 digits of your phone number

When you sell it, give the iPhone with a note saying that the passcode is 1111.

It is asking for the passcode of the apple ID associated with the phone at the momment. If youre unsure what that apple ID is, go to settings> store, it is shown there. The reason is when you are removing content from the phone, it wants to confirm that the user who bought the apps consents to deleting them (because this forces you to re-download everything and lose time if you have no backup)

Dude basically now you have to go to the apple store and ask them to fix it all the best

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