If you don’t want to stuff your gadget up, you need to know how to delete all old SMS messages in Android. You can delete all the messages on Android manually:
- Go to “Messages” app
- Hold your finger on the desired message thread
- Select all other message threads if necessary
- Click the “Delete” button
This is a very quick way to delete sent text messages.
If you don’t want anyone to use your personal data and account, you can reset your device to factory settings or install the guest mode.
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