Do I have to use a passcode on my personal device ?
Do I have to use a passcode on my personal phone
Do I have to use a passcode on my personal phone
Yes, so other people can't have access to your iPhone or other Apple device, change the device passcode and never share it with others.
Change your Passcode -> Use a passcode with your iPhone, iPad, or iPod touch - Apple Support
Do I have to use a passcode on my personal device ?