Search for “iPhone 4s activation lock bypass iOS 9.3.5” and you will see hundreds of YouTube videos promising “Free download, no computer, 100% working.” They will ask you to:
Full functionality—calls, iMessage, App Store, cellular data. However, do not erase the device in Settings, or the lock will return. iphone 4s activation lock bypass ios 9.3.5
If you cannot contact the previous owner, several "bypass" methods exist, but they come with significant limitations. 1. DNS Bypass (No Software Needed) Search for “iPhone 4s activation lock bypass iOS 9