Different kinds of tips for using iPhone, iPad are illustrated here.
Factory reset iPhone is a hard decision. But if you need, follow three tips or ways here no matter you can enter iPhone with passcode or not.
Forgot passcode but want to remove it from iPad? Restore iPad to factory settings would be another choice besides iPad passcode remover.
5 steps enable you to set up auto shutdown in your iPhone or iPad with iOS 8/9/10 if you don't want to do it manually.
iPhone/iPad Basic Settings
News of iPhone and iPad
iPhone/iPad Apps Operation