4.
vincelongman
(Posts: 3218; Member since: 10 Feb 2013)

Trademarks are used when it comes to names
Xiaomi and Xiaomi probably won’t ship to the US, so no issues
Samsung will call it something else

It would be interesting to see a teardown comparison to see how the others compare to Apple’s implementation
And if it infringes Apple’s patents, probably won’t though, these companies have been trying to do pressure sensitivity for several years now