Like the original Galaxy S, on SGS2 samsung has made enhancements to the browser that dramatically increase smoothness. At the time we could only explain the performance increase by shrugging and claiming it was GPU accelerated. We know a bit more now about what enhancements are required to make browsing smooth in this fashion, and the answer lies in a backing store. A backing store is essentially a nice way of saying cache, and in this case what’s being cached is the rendered page itself, which is either rendered into a texture or some intermediary that’s a step above final rendering.
A backing store is what makes iOS’ browser so smooth, and you can see it render into the texture (or if you overscroll beyond the render, where it hasn’t yet) with those little grey rectangles. Render into a big texture, and then it’s a relatively free GPU operation to transform and clip that texture when a user scrolls around the page, though zooming will require a re-draw. Until Android 3.x, however, the stock Android browser hasn’t had a backing store, which is why translating around feels choppy. As a result, it has been the burden of OEMs to make their browsers feel snappy by incorporating their own backing stores. HTC works with Qualcomm to bring an appropriate level of smoothness to their devices, I already mentioned Android 3.x has one (which will no doubt carry over to Ice Cream Sandwich), and Samsung again has one this go-around in SGS2 just like they did with the original SGS.
the batteries drains out in approximately 9hrs
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