On WhatsApp, the double check mark is a sign that indicates that a message has been delivered to the recipient's device. Here is a step-by-step explanation of WhatsApp's check mark system:
- Single Grey Check Mark: This check mark indicates that your message has been successfully sent from your device [1].
- Double Grey Check Marks: The appearance of two grey check marks means that your message was successfully delivered to the recipient's phone. However, this does not mean the recipient has actually read the message [1].
- Double Blue Check Marks: The two check marks turn blue when the recipient has read your message [1].
Please note that check mark notifications are not available for messages sent within group chats. Instead, the double blue check marks will only appear when all participants in the group have read the message [2].
Learn more:
- WhatsApp’s blue check marks: Everything you need to know - The Verge
- What Does Whatsapp Double Check Mark Mean - Business Insider