[TUT] How to change screen DPI *Root* [KK][CM][AOSP]

cool tutorial, although you could change the title to 'how to change screen DPI density' because no screen resolution is changed here( still 1080x1920)

screen resolution change

If anyone knows how to change the screen resolution and keep the touchscreen buttons lined up properly including the notification bar,

Would be really handy,

All the apps I tried on the playstore screw up the onscreen buttons alignment...

adamsmth663 said:

thats true

but i thought its changing resolution because you can fit more stuff on the same screen size

but anyway i can stand the normal 480, 320 all the way

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The resolution; number of pixels displayed will always remain the same as that is part of the display hardware. The Z1's resolution will always be 1080 x 1920 pixels.

You're changing the value that apps use to decide which resources to use. By lowering the density you're making apps such as the system UI think that it should use xhdpi resources instead of xxhdpi resources.

The xhdpi resources are all smaller in size... e.g an xxhdpi (1080p) icon is 144 x 144 pixels in size, whereas an xhdpi (720p) is 96 x 96 pixels in size. Therefore the xhdpi icon takes up less space on on the display and you can fit "more" icons within a 1080 x 1920 canvas.

Summary:

Resolution: Physical number of pixels that a display can produce. This never changes.

PPI: Pixels Per Inch. Again, this is a physical property of the display worked out using the following formula: PPI = No. of pixels in a horizontal or vertical line/the length of that line (inches). This is just maths and the value never changes.

DPI: Dots Per Inch. In this scenario, this is a virtual value that can be adjusted by the user to change the way that apps are displayed. By default it will loosely be in the same region as the PPI of a screen. Eg:

The 5 inch Xperia Z1 1080p screen has a PPI of 443. It's DPI by default is 480.
The 4.3 Xperia S 720p screen has a PPI of 342. It's DPI by default is 320.

Does lowering the dpi improve graphics performance?

Also the resolution can be lowered, apps such as nomone resolution changer...

raziel123 said:

Does lowering the dpi improve graphics performance?

Also the resolution can be lowered, apps such as nomone resolution changer...

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on some apps yes it does lowering G P i change before i had some lag

7sen said:

on some apps yes it does lowering G P i change before i had some lag

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i tried some apps but it screws up the touch screen button locations and notification bar, so I reverted back to stock res and dpi.

regards

It seems to have a negative impact on other things... making stuff a bit too small... and if i increase it to say 400 DPI then stuff is totaly messed up :/

I wonder is there is a way to do that trough xposed Appsettings by not affecting anything else but the main DPI...

I decided to try 360, 380, 400 and 420. The 360 was perfect but the others were not good.

C.Eduardo said:

I decided to try 360, 380, 400 and 420. The 360 was perfect but the others were not good.

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Just make backup, there was many bootloop or random restarting back in the Xperia S days.

DP changing could be cool but could cause problems and apps to FC, so... be careful...

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