I have a question that hopefully someone can answer...
Let’s say on December 1st I had 100 contacts and had contacts turned on in iCloud as well as a backup from that day.
Then let’s say I turn off my iCloud backup, but still leave contacts turned on.
Fast forward to today, February 1st, I have 200 contacts, but my last iCloud backup was December 1st.
If I get a new iPhone and restore it from an iCloud backup from December 1st, will I have 100 contacts or all 200?
Because even tho I turned off my iCloud backup, I left the contacts tab on so they could constantly sync/save.
Really hope someone can answer this.
Here goes... The short answer is, "all 200," presuming you both restore from iCloud Backup and turn on the Contacts toggle in iCloud settings (which happens by default).
If you have iCloud-synced features enabled (primarily Contacts, Calendars, iCloud Photo Library, documents in iCloud/iCloud Drive, Notes, Reminders), then the synced data is stored separately from your iCloud backups. Apple does not include them in your iCloud backup because it would be redundant - a waste of storage. It also means you don't need to make iCloud backups at all in order to preserve Contacts data in the cloud (so long as you have Contacts toggled-on in iCloud Settings).
Now, if you have "On My iPhone" contacts, notes, etc. in addition to iCloud contacts, notes, etc., then the On My iPhone data will be part of your iCloud backup. This is true of your Camera Roll, too (if you have one). It's one of the reasons Camera Roll disappears when you use iCloud Photo Library.
These articles have additional info on what iCloud backup does and doesn't include:
https://support.apple.com/HT207428 https://support.apple.com/HT204136