You don't need an Apple Watch or fitness tracker to monitor key metrics about yourself. Your iPhone is already capable of tracking your steps, measuring walking distance, monitoring sleep patterns, ...

You can stop Google from tracking your iPhone by disabling the "Location History" option in your account settings.

If your iPhone has suddenly slowed down, its battery life has degraded considerably, or you're seeing apps that you never downloaded, these might be signs that someone is tracking your iPhone. While ...