There is no denying the fact that WhatsApp is the best cross-platform text messaging app on Android. It has pretty much eliminated the need for sending traditional SMS by allowing people to send and receive standard texts, photos, audio clips and videos etc, either over Wi-Fi or via high-speed mobile internet such as 3G or LTE. But those who use WhatsApp would be aware that it doesn’t offer a way to lock your messages. And if you’re someone who often lends his smartphone to his friends, you wouldn’t want them to access your chat sessions without your consent. Thankfully, there are a few Play Store apps that let you lock WhatsApp on Android with PIN codes or pattern locks. Lets take a closer look at the best three from the lot.
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