AUDIO REQUIREMENT: Every incoming and outgoing message must be accompanied by the authentic, recognisable WhatsApp message notification sound. The first WhatsApp notification sound begins the video while the chat screen is still empty. Immediately after the sound, the first message bubble appears. For every following message: 1. Play one WhatsApp notification sound. 2. Make the new message bubble appear immediately after the sound. 3. Pause naturally before the next notification. Do not use generic phone alerts, iPhone notification sounds, typing sounds, ringtones, voice-over, music or other sound effects. The only prominent sound throughout the video must be the WhatsApp notification sound. AUDIO REQUIREMENT: Every incoming and outgoing message must be accompanied by the authentic, recognisable WhatsApp message notification sound. The first WhatsApp notification sound begins the video while the chat screen is still empty. Immediately after the sound, the first message bubble appears. For every following message: 1. Play one WhatsApp notification sound. 2. Make the new message bubble appear immediately after the sound. 3. Pause naturally before the next notification. Do not use generic phone alerts, iPhone notification sounds, typing sounds, ringtones, voice-over, music or other sound effects. The only prominent sound throughout the video must be the WhatsApp notification sound.