No more hassles putting contact info one by one. The reason? WhatsApp automatically connects the people in your contact list who are using the app. Speaking of mobile messaging, if you want to sign up for the Facebook-run app, you'll need your mobile number to do so. Another feature that’s not on the desktop app is GPS sharing, which lets you send your location to your WhatsApp group or contact.

No surprise there, given that WhatsApp’s focus is mobile messaging. The main difference between the two types of devices is that you can only call your contacts when you’re using the mobile app. However, there are some features on the smartphone that are not available on desktop. You can use it on iPhones, Android phones, Macs, and Windows PCs.

Working on most platforms, the popular application brings you closer to friends, family, and even colleagues. Each message sent or call made is absolutely free. With WhatsApp, you can send messages or call other users without worrying about character limit or the number of messages sent. So when WhatsApp came out that same year, it became the new and convenient way to do the former. In 2009, software that offered free calls and messages could be found mostly on desktops, not smartphones. With 1 billion active users, Whatsapp will connect you with the people that matter to you the most, both near and far.

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