^ Final frequent iOS version (possibly with attribute updates), in parentheses: final iOS supported ^ min / max period of time Apple guidance is/was available ^ Maximal assist lifespan = present-day or support ended date - launched day ^ Minimum assist lifespan = current or support ended date - discontinued https://ochrann-f-lie-na-iphone-109764.wikipowell.com/5712030/what_does_16_plus_mean