@Megamind: Seller warranty != Manufacturer Warranty which means there is no guarantee for warranty
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If you have any hardware issues, you have to ship it to the seller for warranty.
Battery in XP may be only 1350mAh, but Sony has done a good job making the device last just as long as any other comparable Android phone, despite the 4-pixel per dot screen (red, green, blue and white). Also the device has a very premium look and feel to it than L9. I have personally not come across an L9, so can't say about its +/-.