Depending on your carrier, settings, and type of plan you have, you might see different things here. You’ll also see all the apps that you have installed on your phone that use data, as well as how much data they’ve used. If a certain app is using too much data, you can toggle off its switch so it’ll only access the internet on Wi-Fi.
Doing this will not erase anything from your phone, like your pictures or text messages. It merely resets the statistic counters.
