In Android/iOS:

In the Android and iOS platforms, these two are the same as other platforms in this Minecraft Update automatically, but some players can sometimes run into app store issues that prevent them from that.

For mobile phone users to update manually:

In PlayStation:

PlayStation is totally different from other platforms Procedures because PlayStation mostly updates automatically if the player keeps the console in the rest mode. If it is completely turned off, it will not update it automatically.

Stepwise procedure for manually update:

Caves and Cliffs Announcement Video