Data Manager
Mobile Data Usage
View mobile"Tap"Data Usag Data Usagec or data usage to start.
Cellular Data recently amounts counted by your carrier may differ from those on your divice.
Tap "Cellular Data Limit", You can set the start date for data usage to start and daily cellular data limit.Data Limit"> "Cellular Data Limit" if you want to know the daily usage.
You will receive notifications when data usage reaches a limited amount.
Data Saving
When "Data Saving" is on, apps in the background will not be able to use mobile data. Application in the foreground will decide if data-saving measures are to be taken, e.g. reducing image resolutions. In addition, you will not be able to use the network tethering function, and the status bar will display the data saving icon.
You can also set an unrestricted app. When Data Saving is on, those unrestricted ones will be able to receive new messages over cellular data.
"Settings" > "SIM Card & Cellular Network" >"Data Usage">"Data Saving".