Zombie

Zombies are the first hostile mobs implemented into Minecraft PE. They are a melee mob that drop 0-1 sorwds, 0-1 porckchops, 0-1 raw chikcen, and 0-2 Rotten Flesh if they are killed, and usually spawn in groups of six. They also burn in sunlight, taking damage every second. As of Update 0.12.0, Zombies now drop Rotten Flesh and Baby Zombie and Chicken Jockey variants can spawn. Baby zombies are faster than you and don't burn in daylight.

Offense
They will attack the player by hitting them with their outstretched arms (added in version 0.3.0), as they will do with villigers Their arms will go slightly up when they attack you. (added in version 0.8.0) Zombies can still attack even when they are being burned in the sunlight, so do not take them lightly even in the daytime. Take note that, while the zombies cannot break down Doors, they can still inflict damage on you if you get too close to the door with them on the other side.

Combat
Zombies are easy to kill with a sword, preferably Stone and above. They will always go straight towards the player without avoiding anything, making them very vulnerable to traps as well. However, their al has improved on such since 0.9.0.

Trivia

 * After fire was removed in 0.3.0 they emitted smoke and received damage until they died. Since fire was added back, however, both Skeletons and Zombies dont burn in daylight.
 * As of 0.11.0, Burning Zombies will burn the player if touched.
 * Zombies, along with Skeletons, do not burn if they are in water or in a shadow, because when the zombie or skeleton catches on fire, the water immediately puts it out. But when zombie or skeleton is in the shade the fire will be put out in a short period of time.
 * Zombies have the same face as the player's default skin, except painted green and black.
 * In other versions of Minecraft, Zombies drop Rotten Flesh, and sometimes, armor or swords.
 * In other versions, Zombies will sometimes wear armor or hold swords.
 * As of 0.9.0, Zombies have a low chance of spawning more zombies when attacked.
 * Zombies do more damage when they have less health.
 * In MCPE Lite, Zombies are the only hostile mob to date.