Every smartphone that has apps on it, by default all installed apps takes share of data, though not significant phone users are aware of all these and their implications. On Android phones this can easily be checked and monitor by going to settings then apps by default when you click on apps, all installed apps will be displayed, so click on individual apps and details will show like the storage, data usage, permission and notifications. The data usage will show you the volume of data it consume.
It is your choice to take decision on whether you allow it continues or not. When you click on permission it shows you all the apps it access to, business default they on, so can decide to off them though their implications for such action. When they are off the app will not be able to steal your data again.