If we're talking China, it's banned. But people use VPNs so they may only get messages when their VPN is on.
For sending messages, does it take a long time to get the first check mark, or the second? The first is shown when your message is delivered to WhatsApp, the second when the recipients device receives it (assuming they don't disable it for privacy).
No, not China or any other country that restricts WhatsApp. Both checkmarks appear quite promplty but the receivers actually see the message much later. I have experienced this more in group chats (5-10), where two people sitting under the same roof using different mobile OSes receive messages minutes apart, sometimes even 15-20 minutes.
> In a group chat, the second check mark appears when everyone has received your message. Two blue check marks appear when everyone has read your message.
For sending messages, does it take a long time to get the first check mark, or the second? The first is shown when your message is delivered to WhatsApp, the second when the recipients device receives it (assuming they don't disable it for privacy).