The bigger the screen size is, the better the user experience.
Samsung Galaxy J Max: 7"
Razer Phone: 8GB
Nokia 808 Pureview: 12 & 12MP
1080 x 1920px
Sony Xperia XZ Premium: 2160 x 3840px
7. front camera megapixels
Blu Vivo X: 20 & 8MP
8. has an external memory slot
The device has a standard memory slot (such as an SD or micro SD card slot) so that you can either extend the internal storage with affordable memory modules or you can retrieve data, such as photographs, easily from a memory card.
84% have it
9. every pixel has three subpixels
The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.
78% have it
10. internal storage
Huawei Mate 10 Porsche Design: 256GB
11. has USB mass storage support
It can transfer files, music, photos via USB, no need to install additional software.
89% have it
12. Supports 4K resolution
Allows you to view in ultra-high definition.
Polaroid Power(Android 5.1 Lollipop)
64% have it
13. video recording
1080 x 30fps
Apple iPhone X 64GB: 2160 x 60fps
14. has an IPS screen
IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of normal TFTs TN-matrices: relatively slow response times, small viewing angles and low quality color reproduction.