Apple released the developer beta for iOS 12.1.3 on Monday, January 7, which means that the public beta of iOS 12.1.3 will come out later today. That's not a wild guess. Apple was pretty much in the spotlight on its public beta versions for the iPhone. It was always released on the same day as the Dev version, unless it is the actual beginning of a beta build (eg iOS 12.1.3 Beta 1). In that case, they come out day later.
If you want to know what iOS 12.1.3 Beta 3 has in store for you, you've come to the right place. The public release of iOS 12.1.3 Beta 3 is exactly the same as the previously released developer. So far, there are no new features or extras hidden in this update, but we'll keep investigating, especially since it's been about three weeks since the last beta release.
While we expect Apple to highlight one or two major bug fixes or new issues, most of the work is deep under the hood. However, these minor fixes and security patches are good and should result in a more reliable version of iOS on your device.
To upgrade your iPhone to the public beta 3 of iOS 1
Stay tuned for updates as we go deeper into the beta build.