Check your phone’s Trash, Recently Deleted, or Recycle Bin in the Messages app
Restore from a cloud backup if SMS backup was enabled
Restore from a local backup made on your computer
Use your carrier’s message backup or recovery service if available
Use a third-party data recovery tool if the messages were not backed up
Stop using the phone immediately to avoid overwriting deleted data
Contact your mobile carrier to ask whether SMS recovery is possible
Ask the sender to resend the message if recovery is not possible