Solved: Erase All Content and Settings Not Working or Missing
Reset the Network Settings on Your iPhone to Fix All Kinds of Problems
How to fix Universal Clipboard not working on iPhone, iPad, Mac
Restore your iPhone, iPad, or iPod to factory settings - Apple Support (CA)
How to Factory Reset Your iPhone or iPad - MacRumors
Reset Network Settings on iPhone or iPad in 7 Quick Steps
How Can I Factory Reset my iPhone & iPad without an Apple ID
How to Factory Reset any Mac, iPhone, iPad, iPod touch, or Apple Watch - The Mac Security Blog
Restore factory default settings - Apple iPad Air - Optus