There is no built-in way to disable Apple's passcode lockout feature in your iPhone's settings.  Apple says it knows what is best for you and you cannot set your own security settings for what you think is right for you and your security.  My kids (trapped at home during Coronavirus quarentine) tried to unlock my phone and disabled it.  My iTunes backup is NOT working...no idea why.  Apple won't help and says I must delete all my family photos and restore phone for my own "security."

Apple, stop forcing YOUR ideas of security on the rest of us.  We paid for our phones and we should be able to set our own security parameters.  I want a passcode on my phone...I don't want to be locked out after my screen cracked and I couldn't properly enter my code, or my kids went in too many times, or my parent with dementia entered the wrong code ten times.  Additionally, for those of us who have important family photos and data on our phones, allow us to restore the data as long as we can "prove" ownership/purchase of the iPhone. 

Please give me my family photos back!!

BACKGROUND: Apple has a lockout feature that locks your device after a few incorrect passcode entries.  After ten failed attempts, the system will either lock you out completely or erase your data, depending on your settings. Once locked out, only sync with iTunes to restore or a backup up to iCloud will restore your phone.  If for some reason, you didn't do that (or your backup on your computer fails, computer is lost, etc.) your stuck and you lose your photos and data.  There is not way to disable this "security" feature on the iPhone.  Apple has decided what is best for you and you must just accept it.  If you were unaware of the "feature" until a lockout happened to you, then too bad for you.   Maybe Apple is just trying to force consumers to purchase the iCloud plan so Apple can make more money....not sure, but it's outrageous.