Can't start phone past passcode

How can I factory reset it? I don't know the passcode.

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Does your father use the same Apple ID on a different Apple device?

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No.... unfortunately he passed away that's how I got this phone....all I'm trying to do now is use it for a trade in of some kind.

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@reedmichael9090 I just want to say I am sorry for your loss. You can’t erase the device without triggering an iCloud lock which renders the device completely unusable. You could attempt using the Apple iCloud unlock service (https://al-support.apple.com/#/kbase) but it isn’t a 100% chance they unlock it. For receipt (unless you have the original receipt) I have had luck with random invoices for eBay, Amazon, etc but your luck could vary.

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