Will phones really be completely without wired ports? It's possible but unlikely any time soon. Wired ports are still important for development/debugging and crash recovery purposes, local data sync with a PC, as well as backup and restore.
We'd probably need some kind of high speed short-range wireless connectivity that could replace a USB/lightning port for those purposes, but I think a wired connection will always have a place on phones in general.
I've an avid iPhone user and haven't plugged in for 4-5 years now. For my wife and parents and kids, the only thing they plug in for is to charge. I'm not really sure how big this "local data sync" "backup restore" market is.
We'd probably need some kind of high speed short-range wireless connectivity that could replace a USB/lightning port for those purposes, but I think a wired connection will always have a place on phones in general.