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WhatsApp is a free, multi-platform messaging app that lets you make video and voice calls, send text messages, and more - all with just a Wi-Fi connection. With over 2 billion active users, WhatsApp is especially popular among friends and family who live in different countries and want to stay in touch. WhatsApp Messenger, or simply WhatsApp, owned by Meta Platforms.
WhatsApp uses the internet to send messages, images, audio or video. The service is very similar to text messaging services, however, because WhatsApp uses the internet to send messages, the cost of using WhatsApp is significantly less than texting.
WhatsApp requires your phone number to start the service and this contact number can be seen by anyone added in our contact list. Unfortunately, there is no way to hide your phone number on WhatsApp. The app requires your valid phone number to let you login into the service.
WhatsApp has a number of advanced security features. It has end-to-end encryption, just like Apple's iMessage and Signal. All messages flowing through the platform are secured so that only the sender and the recipient can view them. This means WhatsApp couldn't read your message even if it wanted to. The app doesn't store your personal information, and only people you approve as contacts can message you. As with an increasing number of internet services like Google and Facebook, WhatsApp uses two-factor authentication, which has you type in a second passcode sent to your phone via text message to access your account. Group messages can conflict with some privacy settings, however, in that if you have blocked someone, they can still appear in a group message that you can see.
WhatsApp Web is a desktop version of the mobile app that operates within standard Mac or Windows browsers (except Internet Explorer). But unfortunately, it doesn't offer all the services available in the mobile app.