 After that, all Sony Ericsson smartphones run Android under the Xperia brand.The Sony Ericsson Vivaz Pro has a few differences from the Vivaz, such as a downsized 5-megapixel camera with HD video recording, a slide-out QWERTY keyboard and a larger-size device (109 x 52 x 15 mm, 117g).Other than those differences, both devices are very similar.