In this seed, you spawn in the flat biome, it quite boring, nothing special. But it isn’t the main section of this seed. If you are looking the spawner then conclude this seed very boring you’re completely wrong, because inside the underground is an awesome dungeon. From the spawn by dig straight down, about 3-5 blocks you will drop to the dungeon (or cave system). Walk to that direction until you find a wall made out of cobble stone on your left. Drop that block is some zombies and a chest contain six iron ingots, food and even weapons. Explore the dungeon to find more exciting things.
Seeds : iDroidOutPE Work in PE ver0.10.0+ or ver0.10.5