View this website:http://www.minecraftwiki.net/wiki/Pocket_Edition_version_history#0.6.0 You will find your answer in that website This is what Mojang said:Notice for Android users: Starting with this update, Minecraft Pocket Edition will require Android 2.3 or later. This means the game no longer supports Android 2.1 or 2.2, but you will still be able to play older versions of Minecraft Pocket Edition.
Inigo Romano
View this website:http://www.minecraftwiki.net/wiki/Pocket_Edition_version_history#0.6.0
You will find your answer in that website
This is what Mojang said:Notice for Android users: Starting with this update, Minecraft Pocket Edition will require Android 2.3 or later. This means the game no longer supports Android 2.1 or 2.2, but you will still be able to play older versions of Minecraft Pocket Edition.