A year later, Apple released the iPhone 6s and 6s Plus ... and more stable video quality. The front camera also got a significant glow of up to 5 MP. It also introduced retina flash, which ...

How does the iPhone 6s and 6s Plus fare against last year’s iPhone 6 models and Samsung’s Galaxy Note 5? WSJ’s Geoffrey A. Fowler makes the call, in a video shot entirely on an iPhone 6s Plus.