Check the phone’s Recently Deleted, Trash, or Archived messages folder
Restore from an iCloud backup if you use an iPhone
Restore from a Google One or device backup if you use Android
Check synced devices such as tablets, computers, or smartwatches
Ask the sender to resend the message
Contact your mobile carrier to ask whether message records are available
Use a third-party data recovery tool if the messages were not overwritten
Restore a full device backup to recover older messages
Check messaging apps that may keep cloud backups or chat history
Review notification history if your phone stores message previews