Go to Settings > Privacy > Calls to automatically filter out potential spam.
When sending a picture, tap the "HD" icon at the top to preserve original quality instead of using standard compression.
Send photos or videos that disappear after being opened; they cannot be screenshotted or saved.
Use the "Message yourself" feature to save links, voice notes, or quick checklists.
Long-press a specific chat and select "Lock" to move it to a secure folder accessible only via biometrics or passcode.