Starting a chat on WhatsApp is the fastest way to reach almost anyone, whether it is a friend, colleague, or business contact. This guide walks you through the simplest ways to open a conversation, from scanning a QR code to tapping an existing contact.
With billions of users worldwide, WhatsApp remains one of the most reliable platforms for instant messaging, voice, and video communication. The steps below help you begin a conversation confidently on both mobile and desktop.
| Platform | Where to Find | First Action | Next Step |
|---|---|---|---|
| Mobile App | Home screen or app drawer | Tap the chat icon | Select or search a contact |
| Desktop Web | browser.whatsapp.com | Open the page on your phone to scan QR | Click any contact or New Chat |
| Desktop App | Installed on your computer | Open the app | Choose or create a chat |
| Mobile Business API | Third-party service provider | Integrate webhooks and templates | Send opt-in initiated messages |
Open a New Chat from the Home Screen
On your phone, the quickest path to a new conversation starts on the home screen. WhatsApp places a clearly labeled button for creating chats, usually in the lower right corner on Android or as a floating action button on newer designs.
Tap the compose icon
Press the icon that resembles a pencil and paper, or a plus sign, to open the menu for selecting a contact or starting a group chat. This action opens your address book or recent chats list.
Enter contact details
Type a name or phone number manually, or pick from your contacts if permissions are allowed. After confirming, you move straight into the chat window ready to type your first message.
Start a Chat by Scanning a Contact QR Code
For person-to-person conversations, scanning a QR code is a smooth way to open a chat without manual number entry. Some businesses print QR stickers on packaging or displays to invite customer conversations.
Open WhatsApp on your phone
Make sure the app is updated and your account is verified. A stable internet connection keeps the scanning process smooth and reduces errors.
Point the camera at the contact QR code
Align the code within the frame that appears on screen until it recognizes the data. Once confirmed, the contact profile loads and you can immediately start messaging.
Find an Existing Contact to Message
If the contact already saves your phone number, WhatsApp creates a chat automatically. You can jump into that conversation anytime from your chats list by tapping the contact name.
Scroll through your chats list
Messages appear in order of recent activity, with bold previews of the latest texts or media. This view helps you quickly locate ongoing discussions.
Use the search bar at the top
Type the contact name, username, or any keyword from the chat to filter results. Selecting a match opens the full conversation without extra steps.
Begin a Group Chat for Multiple People
Group chats are ideal for teams, families, or clubs that need to broadcast updates or coordinate plans in one place. You can create a group from the compose menu and add participants right away.
Set a group name and photo
Pick a clear name that reflects the purpose, such as Project Team or Family Updates. An optional photo makes the group easier to recognize in your list.
Invite members and start talking
Choose contacts from your list or share an invite link. As soon as members join, you can send a welcome message and set any group guidelines.
Key Steps to Start a Chat on WhatsApp
- Tap the compose icon on the home screen to open a new chat
- Enter a contact name or phone number and confirm to open the conversation
- Scan a QR code when provided by a business or individual contact
- Search your chats list or use filters to find existing conversations quickly
- Create a group chat for multiple participants and set a clear name and photo
FAQ
Reader questions
How do I start a chat if I only have the person's phone number?
Open WhatsApp, tap the compose icon, enter the full phone number with country code, and start typing your message. If the number is linked to an account, the chat opens automatically.
Can I start a chat on WhatsApp Web without using my phone camera?
Yes, you need to scan a QR code once using your phone to link WhatsApp Web, but afterward you can use the web interface to start new chats without scanning again unless you log out or change devices.
What happens if I accidentally start a chat with the wrong contact?
You can leave or archive group chats, delete messages, or exit the conversation. For personal chats, simply stop responding or clear the chat from your list if you prefer.
Is there a way to start a chat with a business using a shortcut?
Many businesses display a WhatsApp QR code on their website or in-store. Scanning that code with the mobile app opens a direct chat, skipping the need to manually search for the business number.