How to Set Up WhatsApp: A Step-by-Step Guide for Beginners

WhatsApp is free to download, free to use, and lets you send messages, photos, and make video calls to anyone else who has it, anywhere in the world. There is no monthly fee and no per-message charge. It uses your internet connection, meaning Wi-Fi at home or your phone's mobile data when you are out, so the only thing it costs is a little of that data. The whole setup takes about ten minutes, and you only do it once.

Once it is running, a grandchild three thousand miles away costs exactly the same to call as one in the next room: nothing. That is why WhatsApp has become the easiest way for many families to stay in touch across countries and time zones.

What you need before you start

You need three things, and you almost certainly have all of them already. First, a smartphone: an iPhone or an Android phone. WhatsApp does not run on the old button phones, but any touchscreen phone from the last several years is fine. Second, your phone number. WhatsApp uses your number as your name tag, so your contacts find you automatically. Third, an internet connection for the few minutes of setup, which any Wi-Fi or mobile signal will provide.

You do not need a new email address, a password to invent, or a credit card. At no point will WhatsApp ask you to pay or buy anything. If a screen ever asks for card details, you are in the wrong place, so close it and start again.

Have your phone charged and within reach of your Wi-Fi router if you have one. Setup is smoother on a strong connection, and the photo and video features later will use less of your mobile data allowance when you are on Wi-Fi.

Step 1: Download the WhatsApp app

The app comes from the store that is already built into your phone. On an iPhone, that store is called the App Store and its icon is a white letter A inside a blue circle. On an Android phone, it is the Google Play Store, a coloured triangle that looks a little like a play button. Tap that icon to open it.

1. Open the App Store (iPhone) or Play Store (Android) by tapping its icon on your home screen.
2. Find the search box. On iPhone, tap the magnifying glass at the bottom right of the screen. On Android, the search bar sits across the top.
3. Type the word WhatsApp and tap the search or enter key on the on-screen keyboard.
4. Look for the green icon with a white telephone inside a speech bubble. The maker is listed as "WhatsApp Inc." or "Meta". That is the real one.
5. Tap the Get button (iPhone) or the Install button (Android) next to it.

The app will download on its own. This takes anywhere from a few seconds to a minute depending on your connection. Your phone may ask for your fingerprint, your face, or your store password to confirm. That is a normal safety check to confirm it is you, and the app itself is still free.

Step 2: Open the app and agree to the terms

When the download finishes, the button changes to say Open. Tap it, or find the new green WhatsApp icon on your home screen and tap that. The first screen welcomes you and shows a button for the terms and privacy policy. You can read it if you wish, then tap Agree and Continue at the bottom. This is simply you accepting the rules for using a free service, the same as you would for any app.

The app may then ask permission to access your contacts, your photos, and to send you notifications. Say yes to contacts, because that is how WhatsApp shows you which of your friends and family already use it. Saying yes to notifications means your phone tells you when a message arrives, so you do not miss anyone. None of these permissions share anything with strangers, and you can change any of them later in your phone's settings.

Step 3: Enter and confirm your phone number

WhatsApp now asks for your phone number, the one that belongs to the phone in your hand. First pick your country from the list, for example United States, which sets the country code automatically. Then type your own mobile number into the box and tap Next or Done. A small box appears asking you to confirm the number is correct. Read it carefully, because a single wrong digit causes problems, then tap OK.

WhatsApp now sends a six-digit code to that number by text message to prove the phone is really yours. In most cases the app reads the text itself and fills the code in for you within a few seconds, and you do nothing. If it does not, your phone will buzz with a normal text message containing six numbers. Type those numbers into the boxes on the WhatsApp screen.

Step 4: Add your name and photo

The next screen asks for your name. This is the name your friends and family see when you message them, so use your real first name or whatever your family calls you, such as "Grandad Bill". You do not have to add a surname. There is also an option to add a profile photo, which is the small round picture that appears next to your messages.

To add a photo, tap the camera or the circle, then choose Take Photo to use the camera now, or Choose Photo to pick one already saved on your phone. A clear picture of your face helps people recognise you, but this step is optional. You can skip it for now and add one any time by tapping Settings, then your name at the top. When you are happy, tap Next or Done, and the setup is finished.

Step 5: Find your contacts and send a first message

WhatsApp automatically shows you everyone in your phone's address book who already has the app. You do not have to invite them or swap any extra details. To start a chat, tap the new-message icon. On iPhone it is a small pencil and paper symbol at the top right; on Android it is a round green button with a speech bubble at the bottom right. A list of your contacts appears, and the ones who use WhatsApp are ready to message.

Tap a name, and a blank conversation opens. Tap the white bar at the bottom where it says "Type a message", and the keyboard appears. Write a few words such as "Hello from Grandad, testing my new WhatsApp!" and tap the green arrow or paper-plane button to send. A single grey tick means it sent, two grey ticks mean it arrived on their phone, and two blue ticks mean they have read it.

Step 6: Make your first voice or video call

Calling someone on WhatsApp is free no matter where in the world they are, as long as you both have an internet connection. Open a chat with the person you want to call, then look at the top right of the screen. You will see two small icons: a telephone handset for a voice call, and a camera for a video call where you both see each other's faces.

Tap the camera icon for a video call. WhatsApp will ask permission to use your microphone and camera the first time; tap Allow. The other person's phone rings, and when they answer, their face fills your screen and yours appears in a small box. To hang up, tap the red telephone button at the bottom. For a voice-only call, which uses much less data, tap the handset icon instead.

Staying safe and avoiding common worries

Two questions come up again and again, and both have reassuring answers. Can you accidentally spend money? No. WhatsApp itself never charges you, and there is nothing inside the app to buy. The only cost is the mobile data your phone plan already includes, and on home Wi-Fi even that is free. Can you break something by tapping the wrong button? No. The worst that happens is you send a half-finished message or end up on a screen you did not mean to. You can delete a message you sent by holding your finger on it and choosing Delete, and you can always tap the back arrow at the top left to return to the previous screen.

The one thing to stay alert to is scams that arrive as messages, not the app itself. If a message claims your account will close unless you click a link, or someone you do not know asks for money or that six-digit code, ignore it and delete it. Real family members do not ask for verification codes. When in doubt, phone the person on their normal number to check it is really them.

Frequently asked questions

Does WhatsApp cost anything? No. The app is free to download and free to use. It uses your internet data, which your phone plan already provides, and on Wi-Fi it costs nothing at all.

Do both people need WhatsApp? Yes. WhatsApp only talks to other WhatsApp users. The good news is that hundreds of millions of people use it, so most of your family probably already have it. Once they do, messaging and calling between you is free.

Can I use it on an iPad or tablet? You can. WhatsApp has a tablet and computer version that links to the account on your phone. Set it up on your phone first, as described above, then connect the tablet later by scanning a code the app shows you.

What if I get a new phone? Install WhatsApp on the new phone and enter the same phone number. It will recognise you and offer to restore your chats from a backup. Your contacts and conversations carry across, so you do not start from scratch.

Will strangers be able to message me? Only people who have your phone number can message you, the same as with ordinary text messages. If anyone bothers you, open their chat, tap their name at the top, scroll down, and tap Block. They will not be able to reach you again and will not be told they were blocked.

How do I send a photo? Inside any chat, tap the small camera or paperclip icon next to the message bar, choose a photo from your phone or take a new one, then tap the green send arrow. The same works for short videos.

What is a group chat? A group chat is one conversation that several people share, so everyone sees every message. Families use them to coordinate visits or share holiday photos in one place. Someone adds you to a group, and from then on messages from any member arrive in that single chat. If a group gets too busy, open it, tap its name at the top, and choose to mute notifications so it stops buzzing while staying available when you want it.

Can I make the text bigger? Yes, and this is set on the phone itself rather than inside WhatsApp. On an iPhone, tap Settings, then Display & Brightness, then Text Size, and drag the slider to enlarge the writing across all your apps. On Android, look under Settings, then Display, then Font size. WhatsApp follows whatever you choose, so the messages become easier to read at a glance.

What does the green dot or "online" mean? When someone is using WhatsApp at that moment, their chat may show the word "online" under their name. It simply means they have the app open right then. It does not mean they are waiting for you or ignoring you, so there is no need to read anything into it. People dip in and out all day.

With the app installed, your number confirmed, and your first message sent, you are now reachable by every family member who uses WhatsApp. Send that test message today, and the next time a grandchild shares a photo, it will land right in your hand.