Retail box leak confirms key specs for upcoming vivo X20 The retail box of the upcoming vivo X20 smartphone has leaked in a couple of new images. The leak features retail boxes for the phone, and confirms some of its key specs, including Snapdragon 660 SoC and 6-inch display. Other revealed specs include 2K (although it might actually mean QHD) display resolution and an aspect ratio of 18:9. The leak also re-confirms Face Wake feature and reveals Hi-Fi audio chip AK4376A. The X20 is expected to have an all-black Mars Edition variant. The phone is set to be officially unveiled on September 21 . Another device dubbed vivo X20A should also be made official on the same day.