7. WhatsApp creates user account in the form of [phone number]@s.whatsapp.net
The service runs a customised version of the open messaging standard XMPP (Extensible Messaging and Presence Protocol), which was first developed for collaboration application Jabber. That’s why WhatsApp uses the ID protocol made for Jabber in the form of <[phone number]@s.whatsapp.net>
6. Type “whatsapp://send?text=HELLO” in browser address bar
The messaging service has its Web protocol as well, which is used by most websites to create a WhatsApp share feature. If the phone has WhatsApp installed, typing the text above into your browser should open WhatsApp and ask you to choose a contact to send the message to. You can customise the message by replacing the word “HELLO” with whatever message you’d like to send. Put in a little though and it could be a good way to prank friends into sending messages they didn’t mean to.
5. See when your messages were read
Sent a message and later saw that it has been delivered and read, but you’re not sure when? WhatsApp displays a couple of different ticks to tell you about the status of your message. But it also goes one step further and gives you a timeline breakdown on when your message was delivered and read. Just hold on any particular message and choose ‘Info’.
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