Check your phone’s Contacts app trash, recently deleted, or recycle bin
Restore contacts from your Google account if sync was enabled
Restore contacts from your iCloud account if you use an iPhone
Check your SIM card contacts if they were saved there
Restore from a phone backup made before the contacts were deleted
Use your device’s built-in data recovery or restore feature
Check connected accounts like Gmail, Outlook, or Exchange for synced contacts
Export contacts from another device that shares the same account
Use a trusted third-party recovery tool if no backup exists
Contact your carrier if the contacts were stored through their service