Why is my iPhone asking for a passcode that I never created for iCloud backup?

cvft wrote:

I recently upgraded to an I phone 15 from my I phone 7. I had I cloud backups on my account and thought everything would be fine if my phone ever stopped working. Well the day came and my old phone stopped working so I went out and bought the 15. I was trying to setup my I phone using my I cloud backup, but after logging into my I cloud account I have to input the passcode of my I phone 7. What am I supposed to input for this if my I phone 7 never had a passcode. I'm really confused because I can't input a passcode that I never created and I really need to access my I cloud backup.

[Re-Titled by Moderator]

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Confirm iPad / iPhone passcode to keep us… - Apple Community

It might be asking for your iCloud passcode. You should have a passcode set on your iPhone 7. Try entering the passcode you remember. If the issue persists, contact iPhone Support and explain your problem. They can assist you in signing into your new device and resolving any data issues by reviewing your iCloud details.

Attempting to set up new iPhone and can't or don't know how to set up my passcode