I did a test game for Android devices.
However when testing on a device, the game was completely distorted, squeezed on the screen.
On the computer, when testing the game I made a print of the screen width and returned 1440 which is exactly the width of the device I'm testing, a Samsung Note 4.
I know that this 1440 in the cell phone is not the same for the pc, there are differences in density, but I do not know how to solve this problem.
How does the camera work on Unity3D and how do you solve the problem for different resolutions / densities?
UPDATE :
See an image of how the game is played by the Unity simulator:
Andanotherimageofhowitlooksonanandroiddeviceafterdoingbuildandrun: 
Ihavenotchangedthecamera,whichhasthefollowingvalues: 