Contacts missing
I have many missing contacts they disappeared yesterday , what should i do ?
iPhone 11, iOS 15
Question marked as
If you are syncing Contacts with iCloud, see this for help.
Restore contacts stored in iCloud on iCloud.com - Apple Support
If you are including Contacts in your backups, you can restore a backup that contains those contacts. When you restore a backup, you overwrite the current contents on your device.
take a look at this for help restoring a backup.
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support