Is there some limitation of fps on Mobile Platform?

I use the redmi k30 as my debug android device,which has a 120Hz display.I set the framerate as 300 by "Application.targetframeRate" and I set the vsync count as below:


But I still get about 60HZ fps. Is there some inner limitation within moblie platform?

 

Did you turn on 120hz in the phones display settings? Did you test an empty project, to make sure nothing heavy is happening that would cause it to not run faster than 60fps?

 

I forgot to open the display setting... thanks..