If you want to talk to a new contact on WhatsApp, you will need their phone number. There’s no other way around it. WhatsApp doesn’t have a central online directory of usernames as Skype does. You can’t search for a complete stranger in your WhatsApp app. You need to already have their phone number to start a conversation (and even then, they may not even be WhatsApp users.)
To find someone on WhatsApp, start a new conversation. This will bring up a list of all the people in your device’s phone book who also have WhatsApp accounts (assuming you already have their number listed in your device’s phone book). Or if they give you their mobile number, add it to your device’s phone book, refresh WhatsApp, and it will instantly show up if they have a WhatsApp account too.
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How to find someone on WhatsApp (Android and iPhone)
The following tips apply equally to both Android and iPhone. The only difference of course is that the iOS interface is slightly a different design. But it’s all still in the same place.
If this is a new contact, make sure their phone number is first added to your Google Contacts app (or your iOS Contacts app), along with the proper international and local dialing code. If you don’t know the dialing code for a particular country, you can find it out here. Now restart your WhatsApp app and begin a new conversation in Chats. This will bring up all of your contacts who have registered their phone number to a WhatsApp account.
If you have hundreds of contacts, you can narrow down the search quickly by looking for them with the search function.
You can also add a contact manually to WhatsApp without adding them first to your device contacts app. Just start a new conversation, and in your WhatsApp contact list, you’ll see an option called New contact.
Mark O’Neill / Android Authority
Tapping on it, you can now add the person’s contact details. But again, you need their phone number.
Once you’ve found the contact you want in your list, tap on them, and begin your conversation.
How to find someone on WhatsApp without adding/saving a number
What if you want to have a one-off discussion with someone on WhatsApp? Maybe with a business associate or someone you’re not likely to talk to a second time? You may decide in that instance that you don’t want to go to all the bother of adding them to your contact book. In that case, we have previously covered sending someone a WhatsApp message without saving the number first.
What if the contact doesn’t have WhatsApp yet?
WhatsApp has a “invite a friend” function where you can give someone a link to install WhatsApp. When their account is made, they would need to tell you the account has been set up — WhatsApp doesn’t notify you. All the person receives when you invite them to WhatsApp is a direct download link to the app.
In your WhatsApp contact list, at the top, select Invite a friend.
A prewritten message will appear with a copy button and several messaging possibilities. Just choose one and send it off.
No, not unless they know your phone number. So keep it secret from those you don’t know. If you need a phone for your business, get a separate number.
Why can I not delete a WhatsApp contact?
Likely because they are also in your device’s contacts app. Remove the person from there (or at the very least, their phone number), and they should then disappear from WhatsApp.