SL is a slight refresh of the S, differentiating itself with an additional duo of color choices (silver and pink), a faster dual-core 1.7GHz Snapdragon S3 CPU and Android Ice Cream Sandwich (up from a 1.5Ghz processor and Gingerbread). Aside from all that, it's the same media-focused phone, loaded with the same 720p display and 12.1-megapixel shooter, that we reviewed in March of 2011.
Sony quietly outs Xperia SL: dual-core 1.7GHz Snapdragon S3, four hues - Engadget
https://imgur.com/EZ56I
Sony quietly outs Xperia SL: dual-core 1.7GHz Snapdragon S3, four hues - Engadget
https://imgur.com/EZ56I