Although many data plans are nowadays announced as "unlimited," most actually have a limit if your data stream slows radically. If you do not want to pay the premium rates demanded by "unlimited" plans, it's even more important that you do not go beyond your maximum data volume, otherwise you'll face heavy penalties. Either way, it makes sense to monitor the flow of data-not just to make sure you do not exceed your limits, but to see if you need to rethink your current data plan.
With tools, this is not difficult baked in recent versions of Android or a third-party app. Here are some strategies that you can try. (Note: These instructions apply to Pixel XL with Android 9. Your phone's interface may vary slightly by manufacturer, model, and operating system version.)
Setting a data limit
You can use your phone to receive a warning when you approach your data limit before the end of your monthly billing cycle. You can even set a limit beyond which your phone stops using data.
Go to Settings
Go to Network & Internet> Data Usage> Data Alert & Limits
Tap App Data Usage Cycle. That way, you can set the day on which your account will be used to start its monthly cycle.
Save and activate "Set data warning". You can then enter the data limit you want for your phone (for example, 4 GB).
On the same page, you can choose between "Set Data Limit." This will completely turn off your mobile data when it reaches the limit you set.
Using Data Saver Mode
If you're using Android 8.0 or later, your phone should be equipped with Data Saver mode, which will be enabled if you do not have Wi-Fi, and will ensure that apps and services not available are actively used can not stream data in the background.
Turning the data saver mode on and off is very simple.
Go to Settings
Go to "Network & Internet"> "Data Usage"
Select "Data Saver". Turn on "Use data saver" on.
You may want to allow the use of background data for certain apps, even if Data Saver mode is turned on, for example, you might want to receive Twitter alerts no matter where you are.
Go to the Data Saver page (see above).
Tap Unlimited Data.
Scroll to the apps you use. You also want to enable background data usage when Enable data saver mode Enable this option.
Using a data management app
Data Saver helps you manage your apps You may want to have more control over your data, in which case an app such as Datally, My Data Manager, Google or one of me helpful with other available data management apps.
For example, Datally not only automatically prevents apps from running in the background, but also allows you to set a daily data limit and a bedtime mode and create an emergency database (in case you run out of data) end of the month) and monitoring the use of hotspots (which, I am sad to say, can destroy a month's amount of data in a short time).