Force app to fit on screen

Question

I am trying to use an Android app which is not designed very well. Part of the UI is not visible which prevents it from functioning. Is there a way to force it to fit on screen? Possibly by overriding the display DPI with a developer option?

This is a screenshot of the app:

^{Screenshot from Google Play Store. Yes, it says iPod. Lol.}

On my phone the "pairing" button is not visible as it is off the bottom of the display, and there is no scroll bar:

^{Screenshot from my phone.}

As you can see, the UI is simply too big to fit on the display, so some parts get pushed off. Since the UI does not scroll, they are inaccessible.

Answer 1

After googling for a while I found a solution. Enable adb debugging on the phone and run this command:

adb shell dumpsys display | grep mBaseDisplayInfo

Find the part that says "density". This is the screen DPI. Reducing it will make Android think your screen is bigger, and it will shrink all of the UI respectively. I changed it from 240 to 200 by running this command:

adb shell wm density 200

Now the problem app looks like this, and I can use it:

^{screenshot showing fixed app}

Note that this will affect everything on the phone including the homescreen.

I found this solution here. Contrary to what that page says, I did not need to reboot for the change to take effect.