Q: Best way to clone iPhone to iPad mini

Restore the iPad from th iPhone backup and sync with iTunes, if that is how you use your phone. If you use iCloud only, restoring the iCloud backup will download all of your content to the device without iTunes.

Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support

I use an app called Retro.

It allows me to transfer between iDevices and also my computer,

all wirelessly of course. Check it out, you might like it.