We haven't heard much from Acer on the smartphone front since it announced a pair of handsets at Mobile World Congress, but the company's now back with another that it hopes will improve its standing in markets outside North America: the Liquid E2. Expectedly, this one is an update to the E1, and includes a bump up from a dual-core to a 1.2GHz quad-core processor, and the addition of an optional dual-SIM card slot (availability of it will depend on the particular market). Otherwise, you'll get a 4.5-inch qHD IPS display, an 8 megapixel camera that promises "zero shutter delay," the