System services use cellular data
I noticed that system services use cellular data a lot. Whenever I turn it on, it starts to use the data. Is it normal? It uses it for dns, push notifications and game center.
iPhone 15 Pro Max, iOS 17
Hi DannX999,
The issue you're facing isn't something weird. This is normal behavior from Apple and it's system when on cellular. This is due to system requires it's tools and other components to take advantage of being on the internet, when possible. This is to ensure security, small updates and other "Apple stuff."
Take a loot at Using cellular data on your iPhone or iPad.
Or contact Apple support for additional help.
Have a great day :)