Start with this check.
A clock means you should check the connection. One grey check mark means the message has been sent: wait and see whether the same thing happens with other contacts before changing phone settings.
Protect your chats. Reinstalling WhatsApp or clearing its data is not a useful first test for a message that has already been sent.
Which situation matches yours?
Let’s go step by step.
0 of 4 checks completedMark each check to keep track during this visit.
Identify the state of this message
Open the chat and check the particular message you are concerned about. Note whether it has a clock, one check mark or two. Keep an older message separate from the new message you use for your test.
One check mark means sent; two mean delivered. Read receipts are a separate stage.
Run a small, controlled connection test
If sending is still pending, open a web page you have not recently visited. Compare Wi-Fi with mobile data if your plan allows it. Send one short sentence to a contact who knows you are testing.
If it sends on the other network, you have narrowed the issue to the previous connection. Reinstalling the app is unnecessary for that result.
Find out how widely the problem occurs
Check whether one chat or several are affected. If the same phone can message other people, note that result. If only a large photo fails, try text: sending an attachment is a different case from being unable to send any message.
A problem with one contact is not enough to infer that you are blocked. Avoid sending the same message repeatedly.
Stop changing settings once it is sent
When the clock becomes one check mark, your sending test is complete. A recipient who is offline or has no available device may not receive it immediately. Do not keep changing settings just because the second check mark has not appeared.
If the clock remains on two different connections, record the time, operating system and any error message, then consult WhatsApp support.
When to stop and ask for help
If WhatsApp displays an account restriction or suspension, follow the process in that notice. Connection checks cannot resolve an account restriction. Never share verification codes with someone claiming to be support.
Does a step differ from what you see? →Common questions
Does one check mark mean I am blocked?
Not on its own. It means the message has been sent but has not yet been shown as delivered.
Should I clear data or reinstall?
Start by identifying the message state and whether the problem affects other chats. These first checks do not require deleting app data.
Why are there no blue check marks?
Read receipts depend on their settings and the type of conversation. Two grey marks already indicate delivery.
Sources and review
Project owner: Eudald Ferrer Ibáñez. Report a correction.
This guide uses official documentation and our own troubleshooting sequence. Menus may change between versions. Documentation reviewed on September 27, 2026; practical device testing is still pending.
How we review and correct guides →Have you identified the problem?
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