^ Past frequent iOS version (most likely with characteristic updates), in parentheses: previous iOS supported ^ min / max period of time Apple aid is/was available ^ Maximal assistance lifespan = existing or help ended date - launched day ^ Nominal assist lifespan = current or aid ended date - https://tvrzen-skla-na-iphone-1642086.wikilima.com/831371/an_unbiased_view_of_iphone