If you think that your weapons and armor is too weak, then mod Emerald Tools and Armor for Minecraft PE
is very useful and will add ruby weapons and armor. After installing this mod in Minecraft PE you will be able to craft a very strong ruby weapon that will kill almost any enemy with a pair of hits and armor from rubies is so durable that it can withstand the most powerful blows. Mod greatly facilitate your life and warfare in General.
Now you don't need to worry that you will not be able to defeat some mobs in Pocket Edition the mod with Emerald Tools and Armor your fears will not be justified and you will be able to defeat any opponent.