One of the new features in version 0.12 of Minecraft PE is commands. Commands don’t exist in the current build but it is a likely thing to be added soon. If you can’t wait and want to be able explore the new commands right away then you can get the Activate Commands Mod Installer for Minecraft Pocket (MCPE) which adds all of the commands we are likely to see in the official release of Minecraft PE 0.12.
ActivateCommands Mod Installer | 11 Reviewers | | Rating: 3.5