WhatsApp

WhatsApp is a free messaging and calling app from Meta that works over an internet connection instead of traditional SMS or paid call minutes. You register with a phone number, the app finds contacts who already use it, and you can start chatting straight away. In India, where a phone number is the identity people share most often, it has become the default way to reach family, colleagues and even local shops.

What you can do with it

Text messaging is the core feature, but it goes well beyond plain text. You can send photos, videos, voice notes, documents, contacts and your live location. Voice and video calls run on mobile data or Wi-Fi, and group calls let several people join together. Groups are popular with schools, offices and families for announcements. Status lets you post a photo, video or text update that disappears after 24 hours, and Channels let you follow organisations or creators without exposing your number to them. WhatsApp Web and the desktop app mirror your chats on a computer.

Privacy and security

Personal chats and calls use end-to-end encryption, which means the content is meant to be readable only by the people in the conversation. You can control who sees your last seen time, profile photo and about text, switch off read receipts, enable disappearing messages and lock individual chats. Two-step verification adds a PIN that protects your account if someone tries to register your number on another device. Even so, no app removes every risk. Scam messages, fake job offers and forwarded rumours are common, so treat unknown links, requests for money and anyone asking for your OTP with suspicion.

Who it suits

WhatsApp is best for anyone who wants a simple, low-cost way to stay in touch, especially when most of their contacts already use it. Small business owners can use WhatsApp Business, a separate app, to share product catalogues and reply to customers quickly. If you prefer to keep your phone number private, or you want features such as bots and very large public communities, alternatives like Telegram or Signal may fit better.

Practical tips

Back up your chats to your Google account before changing phones and check how much storage the backup uses. Open the storage and data settings to stop media from downloading automatically on mobile data, which saves both data and space. Mute noisy groups instead of leaving them, and star important messages so they are easy to find. Keep the app updated, because security fixes arrive through updates.

Things to consider

The app is free, but your network provider may charge for data. Because accounts are tied to phone numbers, losing a SIM can complicate access, so set up two-step verification early. Some features, including Channels and Communities, roll out gradually, so your screen may differ from another person’s.

Our take

WhatsApp earns its place by being reliable on slow connections, easy for all ages and consistent across Android, iPhone and desktop. Its huge user base is the real advantage: the best chat app is the one your friends and family actually use. Install it only from the official store link on this page, and avoid unofficial modified versions, which can contain malware or steal your account.