Android resolution not correct when build in phone

I Set the resolution in Editor to portrait 10 : 16. when i built it to my phone the screen is 720 x 1280 which is 9 : 16 not 10 : 16. If i set it on 2 : 3 the screen still on 720 x 1280. it seems like the screen size always follow the phone size. ignoring the aspect ration. How to make the resolution exactly like in editor?

i follow this solution but still not working :

You set the build resolution from Player Settings, not Editor. Try changing it from Edit->Project Settings->Player->Resolution And Presentation