To retrieve deleted text messages, the method depends on whether you use an iPhone or an Android device: For iPhone (iOS 16 or later):

• Open the Messages app.
• On the conversations list, tap Edit (top-left) or Filters if Message Filtering is on.
• Tap Show Recently Deleted.
• Select the conversations or messages you want to recover, then tap Recover and confirm by tapping Recover Messages.
• Deleted messages can be recovered within 30 to 40 days after deletion.
• Messages recovered on one device with Messages in iCloud enabled will sync across all your Apple devices.
• Note that messages deleted with "Undo Send" or expired audio messages cannot be recovered

For Android:

• Recovery options vary by device and messaging app.
• Some Android phones (like Samsung) have a Trash or Recycle Bin in their messaging app:
  • Open Samsung Messages app, tap More options > Trash.
  • Select messages and tap Restore.
• If your Android messaging app doesn't have a recycle bin (e.g., Google Messages), deleted texts are typically permanently lost unless you have a backup.
• You can try unarchiving messages if they were archived, not deleted.
• For deeper recovery, use Android data recovery software like DroidKit, Disc Drill, or EaseUS by connecting your phone to a computer. Success depends on how recently the messages were deleted and whether data has been overwritten.
• Recovery software may require enabling USB debugging and sometimes root access, which has risks.
• Always check if you have cloud backups (Google Drive or Samsung Cloud) to restore messages from there

Summary:

• On iPhone with iOS 16+, use the built-in Recently Deleted folder in Messages.
• On Samsung Android phones, check the Trash folder in Samsung Messages or restore from Samsung Cloud.
• On other Android phones, recovery is difficult without backups; try unarchiving or use third-party recovery tools cautiously.

Act quickly after deletion, as messages are typically recoverable only within about 30 days before permanent removal.