You will not just have to fight with frenzied zombies, which will be really a lot in the game. Since over time there will be too many of them in Minecraft Pocket Edition, the only way to stay alive is to disguise yourself.
To do this, Zombie Expansion fashion has a zombie costume that will literally make you invisible to the horde. To craft it, you will have to dirty your hands and collect some rot.
The mod will also add new armor to the MCBE. All textures of objects are standard, so there are no glitches in Minecraft for the tablet. Are you ready to survive?