Here's the difference in comparison between Apple's 3D Touch vs Force Touch vs Multi-Touch. Apple introduced Multi-Touch with original iPhone back in 2007, while Force Touch was introduced with Apple Watch in 2014 and 3D Touch is introduced with iPhone 6s in 2015.
Apple Granted Multi-Touch Patent For iPhone Interface; Future Of Rival Smartphone Makers Is Now Uncertain
Almost 4 years after being filed, Apple was finally awarded the patent concerning the implementation of multi-touch on mobile devices. What could this mean for Apple's competitors who use similar technologies on their phones?