Why is my TextField so small on the screen when targeting Android?

Read that the default size should be 12px. Is this something about DPI? How to solve?

EDIT
Thank you folks, but this doesn't seams to be something related to the font size. It looks like its something about handling DPI because it happens with simple Sprites too and weirdly the colors on Android seams to use an inversed RGB sequence 🤔

The Main.hx:

package;

import openfl.display.DisplayObjectContainer;
import openfl.display.Sprite;
import openfl.display.StageAlign;
import openfl.display.StageScaleMode;
import openfl.events.Event;
import openfl.system.Capabilities;
import openfl.text.TextField;
import ru.stablex.ui.UIBuilder;

class Main extends Sprite
{   
    private var size: Float = 100;

    private var r: Sprite;
    private var g: Sprite;
    private var b: Sprite;

    public function new()
    {
        super();        
        addEventListener(Event.ADDED_TO_STAGE, addedToStage, false, 0, true);
    }

    private function addedToStage(event: Event): Void
    {
        stage.scaleMode = StageScaleMode.NO_SCALE;
        stage.align = StageAlign.TOP_LEFT;

        r = createSquare(this, 0x00FF0000, size);
        g = createSquare(this, 0x0000FF00, size);
        b = createSquare(this, 0x000000FF, size);

        stage.addEventListener(Event.RESIZE, resize, false, 0, true);
        resize(null);
    }

    private function resize(event: Event): Void
    {
        r.x = 0;
        r.y = 0;

        g.x = (stage.stageWidth / 2) - (size / 2);
        g.y = (stage.stageHeight / 2) - (size / 2);

        b.x = stage.stageWidth - size;
        b.y = stage.stageHeight - size;
    }

    private function createSquare(parent: DisplayObjectContainer, color: Int, size: Float): Sprite
    {
        var box: Sprite = new Sprite();

        box.graphics.beginFill(color);
        box.graphics.drawRect(0, 0, size, size);
        box.graphics.endFill();

        parent.addChild(box);

        return box;
    }
}

You can use sp size unit, which always seems the same size on different dpi screens.