Root problem: most contacts on iPhone 6+ will not sync to iCloud. A few contacts sync without a problem. Newly entered contacts will not sync. Failed solutions: I have read and tried a number of solutions that are performed in Settings, as found on the Web. The good contacts: I can make a change to the contact on my iPhone and the change shows up immediately in iCloud and on my PC. The bad contacts: I can't make them appear at all in iCloud, they are completely missing. 600 contacts are missing in the iCloud, 5 contacts are present. Here is the VCF text of a contact that does not sync. BEGIN:VCARD VERSION:3.0 PRODID:-//Apple Inc.//iPhone OS 10.3.2//EN N:Blow;A;Joe;; FN: A Joe Blow TEL;type=WORK;type=VOICE;type=pref866) 991-1234 TEL;type=WORK;type=VOICE:1-630-849-1234 END:VCARD Here is the VCF text of a contact that does sync to icloud: BEGIN:VCARD VERSION:3.0 PRODID:-//Apple Inc.//iPhone OS 10.3.2//EN Nharmacy;Safewayz;;; FN: Safewayz Pharmacy TEL;type=HOME;type=VOICE;type=pref510) 429-9093 END:VCARD Any suggestions? Very frustrating. The presence of a genius bar in Apple stores should be a warning. Other brands don't need geniuses to fix their commercialized systems.