Map: The End 0.16.1/0.16.0
The End dimension is still not available in Minecraft Pocket Edition, but the The End mod will solve this problem. The mod adds this dimension to Minecraft PE, which is very similar to the original and includes a boss known as the Ender Dragon (Dragon of the End).
Ender Dragon
The Ender Dragon is actually a reskinned bat. In the End, you will encounter a large number of Endermen that will start appearing after you step on the pressure plate at the beginning of the map.
This is a fairly strong boss, as it has 200 health points (i.e., 100 hearts) and shoots fire charges with a range of up to 64 blocks.

Defeating the boss will give you a Nether Star and five stacks of bottles o' enchanting.

Endermites
Endermites (replacing silverfish) are small hostile mobs that can be found in the End City. They also spawn when an Enderman dies.
Endermites can detect you from up to 16 blocks away and can teleport.

Enderman
Endermen can be found throughout the map. They are also hostile. Killing Endermen spawns Endermites, but there is also a chance they will drop Ender Pearls.

Ender Pearl
Ender Pearls drop from Endermen. You can use them to quickly teleport from one point to another.
Installing The End map (.mcworld):
- Download the map file .mcworld from the link below.
- Download all add-on files .mcpack from the link below.
- Simply open the file (via ES File Explorer on Android) and the game will install all necessary files (all files).
- Launch Minecraft Pocket Edition and find the map in the world list.
- Start the map and enjoy the End!
Installing The End map (.zip)
- Download the map archive from the link below.
- Extract the folder the_end_map_by_gona from the archive to /games/com.mojang/MinecraftWorlds/.
- Extract the folder the_end_by_gona_resource_pack from the archive to /games/com.mojang/resource_packs/.
- Extract the folder the_end_by_gona_behavior_pack from the archive to /games/com.mojang/behaviors_packs/.
- Launch Minecraft Pocket Edition and find the map in the world list.
- Start the map and enjoy the End!