Also you mention some Background Task Clear and I can´t find any where nor the Button "on" and "off". Neither a factory reset that is mention in some other posts.
I could not find any "infos" at Settings however at Settings --> About Phone --> Wireless Update I found BV8000Pro-Blackview-V0.1_20170803_20180105_1104 I press the buttom Check for Updates and says Your device's software is currently up to date Also in a reply you mention a whitelist, I d...
I don't received any whatsapp or e-mail notification until I specifically enter to the application so notifications appears. I tried to change battery optimization Settings -> Battery Optimization -> Whataspp ; and Whatsapp Battery Uptimization Not Optimize. Also I tried Settings -> Battery Optimiza...