Display quality of game on PC is different than that on phone

Hi. I am new to unity android. I have developed my game for PC. In order for it to work on android I changed the build settings to android and setup Unity Remote 5 on my phone to test, but the the game on phone is seen pixelated with very low display quality. Please help me out with this.

Using Unity Remote is not running the game on the device. It runs the game in the PC editor, streams a low-quality video to the attached device, and sends input from the device to control the editor.

To test a game on a device, you need to build and deploy the game to the device itself.