The larger the sensor the more light the sensor captures yielding in better image quality.
6.17 x 4.55mm
Polaroid Snap: 81.2 x 25.4mm
3. focus points
The more focus points the more flexibility in picking which part of the scene to focus on. They also give the image sensor a better probability in identifying the right area of the scene to focus on in more automatic modes.
Sony Alpha a9: 693
4. continuous shooting at high resolution
Fast continuous shooting is useful for catching action shots.
Olympus OM-D E-M1 Mark II: 60fps
5. maximum light sensitivity
With a higher light sensitivity (ISO level), the sensor absorbs more light. This can be used to capture moving objects using a fast shutter speed, or to take images in low light without using a flash.
Nikon D7500 + Nikon AF-S DX Nikkor 18-140mm f/3.5-5.6G ED VR: 1640000 ISO
HTC Re: 65.5g
7. longer battery life
CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.
Nikon D3x: 4400shots
8. video recording
720 x 60fps
Canon EOS 1D X Mark II: 2160 x 60fps
9. Has WiFi
The device can connect to WiFi.
37% have it
10. fastest shutter speed
A faster maximum shutter speed allows taking pictures of fast moving subjects without blur.
Sony Cyber-shot DSC-RX100 IV: 1/32000s
11. Is dustproof and water resistant
Dustproof/water resistant at depth equal to or greater than 1 meter.
9% have it
DxO One: 26.2mm
13. has a microphone in
A microphone port allows connecting external high-end or specialized microphones.
25% have it
14. Faster photo autofocus due to a phase detection autofocus when shooting pictures
A phase detection autofocus is much faster than a contrast detection autofocus and allows sharper images.