Hi, I am also having issues with my Blackview BV8000 pro after oreo upgrade (black view-bv8000 pro_2018062921_s21v57c2k_jk_tee-ota) and having the below issues: 1. Sim has stopped working after the upgrade which has made the phone unusable. 2. Charging very slow and takes almost 2-3 hours from 30% ...