Internet Protocol Version 6 (IPv6) is designed to tackle the exhaustion issue that appeared in IPv4 and is currently the most recent version available. If you want to disable IPv6 on Android, follow the guide below:
1 Android device should be rooted and the boot-loader should be unlocked.
2 Install Terminal Emulator for android from below link:
3 In Terminal app type SU SuperSU will ask to grant root access give access to the app.
4 Write this command in terminal after SU permission is granted command “echo 1 > /proc/sys/net/ipv6/conf/wlan0/disable_ipv6”
IPv6 is now disabled but every time Wi-Fi connects/disconnects or network change, Step 4 will be required to be repeated.
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