WhatsApp Messenger is a very popular cross-platform messaging service among smartphone users. The app is free for the first year and then $0.99 (£0.69) annual charge. There is no sign up, no login. You just need to use your mobile phone number to verify and use. You can chat for free with another WhatsApp user from more than 450 million monthly active users worldwide.
You know how it feels if you ever lose or forget your pattern lock or PIN code to unlock your Android phones. Pattern lock is a really nice security measure in Android and plenty of users like it. There are different ways to unlock the lock screen in Android. If you ever forget your pass-code or the pattern lock gesture, now there is a way of screen lock bypass, with just an SMS.