1. In the lite version, Oak trees had Spruce tree logs, depending on your world. It is unclear if this is a bug or if it is intentional.
2. Players can have skins on the iOS version and Android and the lite version by replacing char.png in the app file. However, the chosen skin will appear as another player's skin if playing over local Wi-Fi.[16]
3. In the demo video, before the game was released, smooth lighting was available. It was taken out due to bugs being produced on a wide range of devices. As of 0.7.0, it is on by default and can be toggled in Options under the "Experimental" section, meaning that it is still under testing.
4. Worlds played before 0.3.0 update had the other wool and sugar cane (block).
5. The terrain.png file in the APK file found on Android devices is nearly identical to that in the PC version, containing textures for items unimplemented in the Pocket Edition (e.g., cauldron, End Portal).
6. It is possible to play multiplayer over Bluetooth even though it is not coded into the game.Tutorial here. (not available since iOS 6)
7. The Indev wall is also cut by the height limit allowing players to go over it.
8. By placing ladders on the TOP of blocks at the edge of a map (stacking ladders on the top of ladders also works) it is possible to place ladders on the Indev wall as if it were a solid block.
9. Blocks that "snap to" other blocks such as torches, glass panes, and fences will "snap to" the indev wall as if it were an existing block. Torches only do this if an attempt is made to place them on a block they can't be placed on such as ladders.
10. The rose is textured to a cyan color. Even though its considered a rose, it cannot be crafted into dye; rose red dye is obtained by smelting red mushrooms instead.
11. If you have any kind of modifier or command to give yourself any item in the Minecraft entity folder (e.g. iron door) the background of the non-existing entity will appear red meaning it does not exist or was never meant to.
12. The average placing/destroying block range is 4-6 on the PC version but for the iOS/Android is 6-9.
13. Baby animals are in Pocket Edition, but spawn naturally (or with spawn eggs in Creative); animals cannot be actually bred yet.
14. Skeletons are significantly less accurate in Pocket Edition than PC or Xbox, making them easier to fight.
15. Zombie Pigmen are missing the hat layer of their texture on their heads.
16. Zombie Pigmen are NOT neutral in Pocket Edition. They will attack you on sight, and inflict heavy damage in groups. Considering they only spawn from the Nether Reactor, this means they can be very difficult to fight: You must collect the items as well as deal with the Zombie Pigmen, while in a relatively small space.
17. In Creative mode, there are spawn eggs for passive mobs, but not hostile mobs. This may be because hostile mobs are still aggressive in creative mode, and this is probably going to be changed.
18. Before 0.7.0, players on fire would see 2 transparent orange panels in front of their face that resembled the water texture from iPhone versions, or the old water in Minecraft.
19. On Kindle Fire, updates won't appear until a long time after the update is released, however, due to the Kindle Fire being based off a modified Android OS, if you hold the current MCPE in your menu, and press "Remove from Device", then you can afterwards download any android MCPE update .apk file, tap on it in a file manager that you can download from the appstore, and install it normally, allowing you to play an update before any other Kindle Fire user, provided you find a .apk of an MCPE update download link on the internet or by transferring it from an Android device to a Kindle Fire, using a computer.
20. Due to the auto-jump feature, if one opens the inventory or pause menu at the same time as jumping or swimming, one can go on auto-pilot and the player would jump, walk and/or swim without any commands. Auto-pilot ends once the pause menu or inventory is closed.
21. In 0.7.3, the moving title screen in the background is copied from the PC Edition of Minecraft
Source: Minecraft Wiki