v0.2.1 alpha2 was a minor update to Minecraft: Pocket Edition that was released on March 17, 2012. This version was released exclusively on Android devices to fix some of the bugs and crashes in v0.2.1 alpha affecting certain devices. This version was used as the demo version of Pocket Edition for many years.
Fixes
2 bugs fixed
Major bug fix for some tablet devices and smart Phones in which the game was unable to open.
Acer Iconia Tab A500 fixed
Demo
A demo version of v0.2.1 alpha2 was released on Google Play on August 15, 2011. Similarly, a Lite version was released on the Apple Store on an unknown released date. This was the final version of the Pocket Edition demo. Some of the limited features of the demo was that your worlds would not be saved, and out of the total 36 different blocks only 18 were available.