vivo is working on a new Z-series phone, following the Z3x that it launched last month. The new device will be called Z5x and in the leaked image below it's said to be the one at the top. As you can see, it has a punch-hole cutout for the selfie camera in the display, and reasonably thin bezels all-round (with a slightly thicker chin). The vivo Z5x is also rumored to sport a massive 5,000 mAh battery. Unfortunately that's all the information that has been outed so far regarding this upcoming device. What's clear is that it will be cheap for what it's offering, or at least cheaper...
Source: https://www.gsmarena.com/vivo_z5x_is_coming_with_punch_hole_selfie_camera_5000_mah_battery-news-37100.php