How can you check if someone has read your message on WhatsApp?

To check if someone has read your message on WhatsApp, you can look for the following indicators:

1. **Read Receipts**:
   - In WhatsApp, two grey check marks mean your message has been sent.
   - Two blue check marks mean your message has been delivered to the recipient's device.
   - When the recipient reads your message, the two blue check marks will turn into two blue check marks with a small profile picture of the recipient underneath. This indicates that the message has been read.

2. **Group Chats**:
   - In group chats, the two blue check marks will turn into two blue check marks with profile pictures of the participants who have read the message.

These indicators work when both you and the recipient have read receipts enabled in WhatsApp. However, if the recipient has turned off read receipts in their privacy settings, you won't be able to see the blue check marks even if they have read your message. It's important to note that you won't receive a notification when someone reads your message; you'll need to check the chat thread to see the status of your messages.