1. Restrict background data
The easiest way to save data is to tell your apps (or the Android system itself) to restrict background data. Background data is all that internet traffic that goes on when you're not actually using an app: email syncing, feeds updating, weather widgets and so on.
2. Ditch the Facebook app
It's pretty well known among Android aficionados that the Facebook app is one of the biggest consumers of data, not to mention its high resource use and battery drain. So why not replace it with something less demanding?
3. Disable auto-updating apps
Another huge drain of your data allowance comes from the occasional bout of Google Play app updating. If you have the Play Store set to auto-update apps, even over a data connection, this could be chewing its way through your allowance every month without you even knowing.
4. Use Opera's video compression
The Opera for Android browser now has a very useful video compression option, which can save you a load of data if you're frequently watching videos on the go. To use it, simply download the Opera browser, go to Settings > Data savings and tick the box that says Video compression. This setting not only saves you data, but also means that videos are more likely to load faster
5. Compress Chrome pages
If you use Chrome for all your web traffic, this tip alone can save you 30-35 percent of your mobile browser data consumption. The Data Saver option compresses web pages before loading them in your browser.
Using Data Saver does slow things down a tiny bit, but you quickly get used to it and a moment's delay is worth it when your data lasts so much longer. Just launch Chrome, tap the three dots in the top right-hand corner, go down to Settings and then to Data Saver. Keep an eye on the graph to see your data saving