The iPad can immediately start and connect to an iPhone Hotspot, without having to interact with the iPhone to turn it on manually. This makes for an ultra-fast way to connect an iPad to the internet through an iPhone’s shared internet connection.
This iPad ability is quite similar to using iPhone Instant Hotspot from the Mac, except rather than accessing it from a menu bar you access Instant Hotspot through the Settings app.
How to Start & Connect to iPhone Hotspot from iPad
Requirements to be able to use the iPhone Instant Hotspot feature from iPad are…