This technique will stop Android apps on your phone from sending or receiving data in the background. You can manually select the programs that can use unlimited data even with the Data Saver turned on, as well as the ones that are restricted.
This Guide Will Show You How to Format Your Android Phone and Delete All Data.
Search for Network/SIM/Internet under Settings.
Locate Data Saver and turn it on.
The best way to disable dual-channel network acceleration
Some smartphones, like those made by companies like OnePlus, have a Dual-channel network acceleration feature that enables you to speed up downloads using both Wi-Fi and mobile data. You can save some data if you turn it off.