But under some circumstance, as it mentioned above, you need to unlock the iCloud activation locked iPhone. It is especially useful to protect your privacy when the device is lost or stolen. Activation Unlock iPhone with PasswordĪctivation Lock is an Apple secure feature designed for protecting various iOS data and personal files on iPhone or iPad. Part 4: FAQs of Activation Unlock iPhone.Part 3: Online Service to Unlock Activation Lock on iPhone.Part 2: Remove Apple ID on iPhone Without Password.Part 1: Activation Unlock iPhone with Password.