A tick in WhatsApp is an indicator that shows the status of a message that you send. Specifically, a single grey tick means that the message has been successfully sent from your phone, but it hasn’t been delivered yet to the other person’s phone.
A single grey tick on WhatsApp means that the message has been sent from your phone, but it hasn’t been delivered to the recipient’s phone yet.
This could occur for a number of reasons, including the recipient’s phone being off, them not having a data connection, or them having deleted or logged out of WhatsApp. If the recipient has blocked you, you will only ever see one grey tick and never a second tick.
Other indicators, such as not being able to view the recipient’s last seen or online status, not receiving updates to their profile photo, and not being able to call their number, can also point to blocking. WhatsApp keeps the indicators for being blocked ambiguous to maintain users’ privacy.
There are a few possible reasons for this in the interim, such as low battery life, an unreliable internet connection on the other end, or the phone being turned off. Additionally, your contact might have removed WhatsApp from their phone or logged out.
Furthermore, there is no reliable way to verify that a block is in effect because WhatsApp purposefully makes it difficult to determine whether you have been blocked or not in order to protect the privacy of its users.
