WHATSAPP FREE DOWNLOAD
Whatsapp is a Mobile application that lets you send SMS for free to other users who also have whatsapp on their mobiles and works through your internet data plan or a wireless network available.
The future of SMS is whatsapp, it is more than SMS, in fact, companies are considering put free SMS for 2015, but for the time being they take this advantage.
A line in the message means that the sender sent the message but the recipient does not read as two stripes means that the recipient has received but does not imply that the receiver has read it.
Furthermore whatsapp is a snitch, it tells us the last minute our contacts have been connected.