 Cydia can be installed via third-party jailbreaking software such as the more recent applications unc0ver (iOS 11 – iOS 13) and Chimera for A12 (iOS 12, Sileo as the default package manager instead of Cydia) or Chimeras predecessor Electra(iOS 11).Themes can have a variety of changes to the appearance of SpringBoard, mainly on the homescreen icon appearance.However themes also change elements of the user interface such as the dock, folder backgrounds and icons inside settings.