Aspect Ratios for Phone/Computer Game?

So i want to make a phone game but also work on PC. I am gonna have the 16:9 (1920x1080) ratio which is really easy to create in photoshop but how many pixels would it be for the mobile version which will be in the middle? I know it’s not efficient but ill work on it later .

Here are some examples of what I mean: (In the middle is where i want the main game screen to be)

There is no single answer to how wide the middle should be, as there are many screen sizes and aspect ratios, but most probably you’ll want a middle area of 9:16 (w:h) as this is most common (see Unity mobile hardware statistics).

The actual pixel width of the middle is depending on the resolution of the desktop monitor the game is played on - there are quite some variations out there, you’ll want to keep in mind other aspect ratios than 16:9 screens.

@jorrit5477 My screen is 1366 x 768 so a normal 16:9 screen. I have added a 1920 x 1080 background image in the Unity Scene. So i just need to make a 9:16 screen. Alright i’ll work on that. Thanks!