c,
thanks for reply..... have tried all of the suggested fixes, cant be ports or cords >image capture would not work..........have external boot drive attached to 21.5 w/ sierra using the imac hd as storage.......iphone works in that sierra imac format, itunes and finder, so there is an option to get content on the phone, however that leaves the problem unresolved......... all updates are current in both devices, have run disk warrior am afraid to delete caches
( last time lost safari and had to reinstall ) this last iphone update seems to be the problem .... in india and apple expertise is in short supply ..........open to all suggestions.......(.side ques: how do you find the upgades work mojave / catalina. ? )