[LaaT]

Because Android's UI framework is quite behind that of iOS and even that of Windows Phone's. Forking and fixing the UI framework is not doable.

Besides Ubuntu is in OS business, they would rather offer an alternative to Android.

[bmelton]

All due respect, that seems like a knee-jerk answer to a knee-jerk question.

The mobile Ubuntu for Phones is actually entitled "Ubuntu for Android", and is billed as "The full PC desktop for multi-core Android phones".

That seems to stand in stark contrast to literally everything you said.

[LaaT]

I was thinking more of tablets actually. It's not a secret that Ubuntu has aspirations in this segment. Jumping from tablets to phones is much almost trivial.