Thanks for telling us.
I have a tablet that runs so badly on Android that I have put it aside - haven't found a reason to use it. So once Ubuntu phone is usable, I shall give it a try . . .

Ubuntu has a warning on its offering:
Ubuntu for phones is intended to be used for development and evaluation purposes only. It is an early release that can potentially brick your device. It does not provide all of the features and services of a retail phone and cannot replace your current handset. This is the first release of Ubuntu for phones and it will continue to evolve quickly. Please read the disclaimer as well. This process will delete all data from the device. Restoring Android will not restore this data.

Wolfgang

On 23/10/13 08:45, Peter Reutemann wrote:
"I installed Ubuntu Touch "1.0" on my first-generation Nexus 7 tablet
and have been using it as my main tablet system for the last four
days. Here's how it went. First off, the installation was surprisingly
painless. I followed the official instructions and didn't encounter a
single problem. That being said, the installation is really geared
toward software developers, power users or people already comfortable
on a Linux command line. If you're not in one of those categories, I
recommend holding off for the time being. Once installed, Ubuntu Touch
booted up rather quickly � in only just a few seconds (a fair bit
faster than Android 4.x on the same tablet). And, immediately, I was
presented with a short tutorial that appears the first time the system
is booted, which, I might add, has got to be one of the slickest,
least annoying tutorials I've seen. But... there were problems. The
battery life was, to put it mildly, terrible. Performance has been
mixed, and the OS was prone to what I call 'The Pulsating Seizure
Feature' a few dozen times over the weekend. In a nutshell: launching
apps (and, occasionally, moving between apps) can cause the device to
freeze and begin flashing the screen rapidly."

-- source: http://mobile.slashdot.org/story/13/10/22/1344209

Cheers, Peter