How do I check if a phone number is on WhatsApp?

How do I check if a phone number is on WhatsApp - briefly?

To verify if a phone number is on WhatsApp, you can simply send a message to that number using the app. If the number is active on WhatsApp, your message will be delivered and read receipts will appear.

How do I check if a phone number is on WhatsApp - in detail?

To determine if a phone number is associated with an active WhatsApp account, you can follow these steps:

  1. Save the Contact: Firstly, ensure that the phone number in question is saved as a contact on your device. Open your Contacts app and add the number along with a name or any identifier.
  2. Open WhatsApp: Launch the WhatsApp application on your smartphone. If you don't have it installed, download it from the Google Play Store (for Android) or the Apple App Store (for iOS).
  3. Search for the Contact: In the WhatsApp app, navigate to the "Chats" tab at the bottom of the screen and tap on the search icon (usually represented by a magnifying glass) in the top-right corner. Start typing the name or number associated with the contact you added earlier.
  4. Check Contact Status: If the contact appears in the search results, it indicates that the phone number is registered with WhatsApp. However, to confirm if the account is active, look for a green checkmark next to their profile picture and name. This checkmark signifies that the user's account is verified.
  5. Send a Message: To further verify, you can attempt to send a message to this contact. Open their chat by tapping on their name in the search results. If the message sends successfully without any error notifications (such as "This person doesn't have a phone number connected to WhatsApp"), it confirms that the phone number is associated with an active WhatsApp account.
  6. Check for Last Seen or Online Status: Another way to verify activity is by checking the contact's last seen or online status. Below their name in the chat, you should see either "Last seen" followed by a timestamp or "Online" if they are currently active on WhatsApp.

By following these steps, you can accurately determine whether a phone number is associated with an active WhatsApp account and gain insight into its current status.