Knowing the differences between the iPhone SE and the iPhone 6s, iPhone 6 and iPhone 5S is important to make a good decision when to buy a new iPhone or if you want to upgrade what you already have. So this analysis show the comparison with chart where summarized in a few points on how the main features in these models differ from each other.
The 4-inch screen iPhone SE is one of the main differences with other iPhones, because its screen makes it look more compact than the iPhone 6S (4.7 inches) and iPhone 6S Plus (5.5 inches), but also with bevels more larger and thicker. The iPhone has the same thickness of the iPhone 5S (7.6mm) and the same height (12.8mm) and width (58.6mm).
iPhone SE vs. iPhone 6S, iPhone 6 and iPhone 5S specifications and features comparison: