iphone 6 will not sync

[iMore Question]

Hello
Have bought an iphone 6plus which has the recent update when i plug the phone in itunes recognises it but will not sync to the phone. I am using an old preferred version of itunes 12.3 I have tried to manually sync it to no avail can someone please help
Thank you in advance
Noel

 

[jimkraz]

Update to latest iTunes, check iTunes is not set to Manual Sync.