• Voice: Tap the microphone icon, hold to record, release to stop, play to review, then send.
• Images: Tap the “+” → Image, choose from the gallery or capture with camera.
• Video: Tap the “+” → Video, select from gallery or record a new one.
• Files: Tap the “+” → File to send documents. First-time use requires storage permissions.

Ensure the app has the required permissions; otherwise, the functionality may not work.