Open the Phone app
Tap Recents
Check whether the call is still listed
Swipe down and use Search in Recents if available
Open the Contacts app and check recent call history from linked contacts
Check voicemail for missed call records
Look at call logs on your carrier’s website or app
Contact your carrier for detailed call history
Restore your iPhone from an iCloud backup made before the calls were deleted
Restore your iPhone from a computer backup made before the calls were deleted
Check other Apple devices signed in with the same Apple ID
Use third-party recovery software if you have a backup or recoverable data
Ask the other caller for their call log if needed