Here's how to check your cellular data usage on an iPhone, and find specific readings for and manage each app's data.

When you're always on Wi-Fi, it's easy to overlook just how much data apps like Spotify use per month. But this becomes an issue when you have limited cellular data. Maybe you only have a 5GB monthly ...

FaceTime calls do use data, and you can check how much through the Settings app on your iPhone or iPad.