after i restore my iphone 7 plus the passcode changed from 6 digit to 4 digit
Hi
i am a first time iphone user. I update my phone from IOS 14.5 to IOS 14.6 and after that i feel my phone runs slow so i restore my phone and once i restore my phone shows the activation lock screen which requires the AppleID and Password and i stunned there what is that i buy the used phone so i did't have the Apple ID nor Password but i have the Passcode so when i choose the Unlock with the Passcode i used to unlock phone with 6 digit lock but after the restoring in the Unlock with the Passcode tab i only see the option to put the 4 digit passcode and i try to put my 6 digit passcode maybe 4 digit out of it will work in 4 digit passcode but it did't and now i am stuck on the activation lock screen where nor i cannot enter the 6 digit passcode to activate my phone nor i can restore the iphone so i am able to use it with the IOS 14.5.
Kindly Help
Thanks
Note: The previous owner is not in my contact anymore.
iPhone 7 Plus