In general, you should install apps outside of your phone's app store only if you have a very good reason to.

If you want to know how to sideload apps on your Android phone, here's a handy guide. We'll also explain some safety tips.

The Google Play Store lets you install apps on your supported phones and tablets simultaneously. Here's how you install them from the Play Store.

App downloads consume a considerable amount of data, which is why some phones won't download apps when not connected to a Wi-Fi network.