[slate]

For those curious as to why the ui is not in tablet mode here's the reason:

In the android source code for 4.1.1 in the file

/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

you have the method setInitialDisplaySize()

within this method you'll find the following code:

// SystemUI (status bar) layout policy
int shortSizeDp = shortSize
        * DisplayMetrics.DENSITY_DEFAULT
        / DisplayMetrics.DENSITY_DEVICE;

if (shortSizeDp < 600) {
    // 0-599dp: "phone" UI with a separate status & navigation bar
    mHasSystemNavBar = false;
    mNavigationBarCanMove = true;
} else if (shortSizeDp < 720) {
    // 600-719dp: "phone" UI with modifications for larger screens
    mHasSystemNavBar = false;
    mNavigationBarCanMove = false;
} else {
    // 720dp: "tablet" UI with a single combined status & navigation bar
    mHasSystemNavBar = true;
    mNavigationBarCanMove = false;
}

This will determine the type of ui to display.

The arc lcd density is set to a default of 213.
DisplayMetrics.DENSITY_DEFAULT is set to a default of 160.
size of kobo arc screen is 1280x800 so shortsize is 800.

So we do the calculation:

800 * 160 / 213 = 600.9

600.9 gives us "phone" UI with modifications for larger screens

I find this default phone ui a very glaring omission during the testing phase. A few more changes will need to be done if kobo truly wants a tablet ui on a tablet device but it's honestly not hard to implement.