Related: Does Rooting or Unlocking Void Your Android Phone's Warranty? The Many Ways to Unroot an Android Phone Whatever your reasons, unrooting isn't that difficult-as long as you know what you're doing. Or maybe you just want to download an over-the-air update. Or, perhaps you're trying to sell your device, or get warranty service. Maybe you want to unroot for security reasons, or maybe you just don't need root for your favorite tweaks anymore.