What does one checkmark in WhatsApp messages mean - briefly?
A single checkmark in WhatsApp messages indicates that the message has been sent from your device but has not yet been delivered to the recipient's phone. This means the message is still in transit and may take some time to reach its destination.
What does one checkmark in WhatsApp messages mean - in detail?
A single checkmark in WhatsApp messages indicates that the message has been successfully sent from your device, but it has not yet been delivered to the recipient's phone. This status does not provide information about whether the message has reached the WhatsApp servers or is still in the process of transmission. In other words, a single checkmark merely confirms that the message left your device and is on its way, but there is no guarantee that it will be successfully delivered to the intended recipient. Once the message reaches the WhatsApp servers and is awaiting delivery to the recipient's phone, you will see two checkmarks next to the message.