0.0.0.0 is an DNS Changer. It’s different from 18.104.22.168: Faster & Safer Internet which only uses CloudFare DNS server.
This DNS changer connects to fastest DNS server to create betternet:
– CloudFare DNS server 22.214.171.124
– Google DNS server 126.96.36.199
– And many more
– DNSpipe can unblock sites, 3G 4G wifi booster
– Net Booster for PUBG
– Better net connection, web surfing experience
– Create high-speed internet
Android offers no options to change DNS servers for mobile network 2G/3G/4G.