Connect to Wi-Fi instead of using your mobile data to reduce your mobile data usage. Adjust your app settings to reduce the amount of data they use. -You can set videos only to play when you're on Wi-Fi or turn off auto-playing videos.
Limit the background data usage for your apps when you're not actively using them by adjusting the app's settings to disable background data usage.
Use data compression features with browsers, such as Google Chrome, to help reduce the amount of data you use when browsing. Monitor your data usage regularly by checking your phone's settings or downloading a data usage tracking app.