You'll have to go into your settings to trust non-App Store apps on an iPhone. Here's how to make your iPhone trust these ...

You can add apps to your Apple Watch directly through the Watch's App Store, or through your iPhone's Watch app.

First, you’ll need to download the Starbucks app. If you have an iPhone, open the blue “App Store” icon on your screen. For Android phones, look for the “Google Play Store” with its colorful triangle ...