The iPhone SE is an exact clone of the older 5S. However, it is slightly slimmer and lighter. The comfort of a smaller phone is something only stubborn.
Talking about the display, Everything is looks good in the small screen with a resolution of just 1136 x 640 pixels. it is very crisp with good contrast and viewing angles. But, 3D Touch is absent in this.
The phone has the 12 MP camera of the 6S along with Live Photos support. The rear camera is capable of shooting 4K videos along with slo-mo and time-lapse videos, also there is a dual tone LED Flash at the back and on the front screen flashes to lighten selfies, like in the 6S.
The camera shoots photos good under good lighting conditions, but not under low-light with flash enabled. The images sometimes having more dots under low-light. While camera quality is good, it is not at par with the 6S or the older iPhone 6.
The device is smooth and there was no glitches in performance. you might thing its small, but it is not at all 'less powerful' than the 6S.
Overall, iPhone SE is a small but faster super horse.