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How to update Android apps on your phone
It's insanely easy once you figure it out.
You can visit the Google Play Store and search for an app for just about anything, from mindless or intense games to news, utilities, streaming, and more. Find the app you want from the list to set for automatic updates and select it to open the Details page. This is not just to enjoy the latest and greatest features and the best experience, but to download important bug fixes and security patches, and to address security-related vulnerabilities.
Or read this on Android Central