0.0.0.0 is an DNS Changer. It's different from 1.1.1.1: Faster & Safer Internet which only uses CloudFare DNS server.
This DNS changer connects to fastest DNS server to create betternet:
- CloudFare DNS server 1.1.1.1
- Google DNS server 8.8.8.8
- And many more

Benefits:
- 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.

// Option A //

To download 0.0.0.0: Faster & Safer Internet , DNS Changer mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download 0.0.0.0: Faster & Safer Internet , DNS Changer mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download 0.0.0.0: Faster & Safer Internet , DNS Changer from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search 0.0.0.0: Faster & Safer Internet , DNS Changer in HappyMod App.