Searching for a way to unlock iOS devices without passcode? Based on my experience, there are 4 ways to realize it. 1. Use Siri. This method will not erase any data on your device. But it just supports iOS 8.0 to iOS 10.1. 2. Use iTunes. You need to ensure your device is synced with iTunes before if you want to back up. If not, putting your iOS device into recovery mode is also helpful. 3. Use iCloud. As long as you enable "Find My iPhone" on the iOS device, you can use iCloud to unlock by remotely restore your device. 4. If the above ways can't satisfy you, you may try an unlocking tool like joyoshare ipasscode unlocker. It supports to unlock 4 kinds of screen passcodes and is guaranteed to get your device unlocked quickly and perfectly.