If you want an awesome selfie camera but the vivo X7 Plus is too pricey for you, try the new vivo V5. Its claim to fame is the 20MP front-facing camera. It uses a high-quality sensor too - a Sony IMX376, 1/2.78" - behind a bright f/2.0 aperture. There's an LED flash on the front too, of course. These are some of the best specs for a selfie camera ever (the X7 has a 16MP selfie cam, the Xperia XA Ultra has a 16MP 1/2.6" sensor and OIS). The main camera on the vivo V5 is plain in comparison - 13MP sensor with Phase Detection AF. Vivo is a little evasive with chipset and video...
Source: http://www.gsmarena.com/vivo_v5_unveiled_with_20mp_selfie_camera_split_screen_multitasking-news-21637.php