It’s an open secret that SMS is a cash-cow for operators. They can charge obscene amounts for messages (compared to the cost of delivering them), obscene amounts that become crimes against humanity when they rape you for sending SMS when roaming. WhatsApp is one of the best alternatives — and one that may actually have a future when compared to much earlier incarnations like MXit that have millions of users but are still trying to find a way to make money.
First, WhatsApp’s functionality. Quick to cover, there’s not an awful lot to it. Once you’ve installed the app (for iOS, Android, BlackBerry and Nokia) you register. This requires that you give a cellphone number, triggering a reply message from WhatsApp that validates your phone and login, and ties the app to your handset.
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