So I still can't fathom the thing about interface speed. My android ui response is INSTANT???
Battery life is pretty straightforward. While the Focus has a very contrasty Super AMOLED screen, it comes at the expense of power consumption, especially when displaying white. Our web browsing test wreaks havoc on Super AMOLED devices as there are a lot of white pixels in the web pages we use to test. As a result the Focus delivers the worst battery life of any Windows Phone we've tested thus far. Thankfully WP7's default theme is predominantly black. Other than the email and IE mobile apps, the majority of the OS is mostly displaying black pixels. So while the Focus doesn't do well in our web browsing battery life test, in general usage the phone lasts longer than you'd expect. I'd say you can plan on charging the phone at least once a day for moderate usage.The LG Optimus 7 on the other hand does extremely well across the board. It has the same sized battery as the Focus, but with a much more power efficient display.