Tips on saving mobile data

Tips on saving mobile data:
1/ i - Enable google chrome data saver - https://support.google.com/chrome/answer/2392284?hl=en
  ii - alternative - Open web using Opera Mini browser (extreme mode) for viewing web. https://goo.gl/D7jLJ1
2/ i  - Download #OperaMax - didn't work on https traffic - http://www.opera.com/mobile/max
   ii - alternative #OnavoExtend - https://goo.gl/I97vjW
3/ Disable Media auto-download on Whatsapp - https://www.whatsapp.com/faq/en/android/23248698
4/ Automatic updates on on apps in google play store (wifi only) https://support.google.com/googleplay/answer/113412?hl=en
5/ more tips => http://www.cnet.com/how-to/11-ways-to-trick-android-into-using-less-data/

- @syawal