How do you get moon lord in the iPad terraria?

To summon the Moon Lord in Terraria on ipad, you must first defeat the Lunatic Cultist, which can be found at the Dungeon after defeating the Golem. Once the Cultist is defeated, you’ll need to wait for the lunar events to occur, which includes the four Celestial Towers. After defeating all four towers, the Moon Lord will be summoned automatically when you defeat the last tower. Be prepared, as he is one of the toughest bosses in the game!