Please do the following:
- Open the Settings on the device.
- Select “Wi-Fi”.
- Long press your current network, then select “Modify network”.
- Mark “Show advanced options” check box.
- Change “IP settings” to “Static”
- on the fields DNS1 and DNS2 enter 220.127.116.11 and 18.104.22.168 respectively
- Press “Save” button, disconnect from the network, and reconnect for changes to take effect.
Some Android version have slightly different menu but the procedure is the same.