I recently replaced my iPhone 6 and would like to sync my photos from my MacBook Air to my IPhone. How do I do that?

Hi

Turn on home sharing on all your apple devices

And iCloud sharing

When you set up your iphone did you use your iCloud backup

During set up

Since ios 7 you can do almost everything over WiFi

We have 3 iPhones / 4 ipads not used PC for them for over 2 years

All done over WiFi .

Cheers

Brian