The Health app is the central hub for health tracking—from Apple Watch data to information from connected dietary apps that ...

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

Your iPhone can track steps using a built-in accelerometer. You can track your steps in the Health app, where you can see a range of exercise metrics.

Google has updated Health Connect to allow it to track your steps using your Android phone. Here's why that's a big deal.

These days, smartphones store all our information. We provide some information, and others are automatically tracked by them.