Blog
Plain answers about keeping one contact list across Google, Microsoft 365, iCloud and CardDAV.
- How to sync contacts between Google and Microsoft 365The native options, why they fall short, and how to set up a two-way sync that merges duplicates instead of multiplying them.
- Why your contacts never sync between accounts, even though your phone can hold all of themYour phone holds iCloud, Google, Fastmail and Nextcloud contacts at once and never reconciles them. That is CardDAV as designed, not a setup mistake.
- Why your phone shows a number instead of a nameThe contact is in Outlook, your phone reads Google, and you get a bare number. Here is why it happens, and the native workarounds that only half fix it.
- Google can't merge contacts across accounts. Here's why yours are in four places.Google and Microsoft each sync only their own ecosystem, so the same person ends up in four address books. Merging them is the part nobody can do for you.