★ Key Takeaways
If You’ve Changed Your Default Account Settings for the Contacts App to iCloud, You May Notice That Some Contacts That Were Stored on Your iPhone Are Now Missing. You Can Find Them and Manually Add Them to Your Contacts App. Then, When iCloud Backs up Your iPhone Again, Those Contacts Will Be Added and Saved.
Investigate the full background Why Have I Lost Half My Contacts on My iPhone supported by expert analysis.
If You’ve Changed Your Default Account Settings for the Contacts App to iCloud, You May Notice That Some Contacts That Were Stored on Your iPhone Are Now Missing. You Can Find Them and Manually Add Them to Your Contacts App. Then, When iCloud Backs up Your iPhone Again, Those Contacts Will Be Added and Saved.
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