Whats app is one of the worst messenger because of its not free messenger and we need to pay$0.99 per year and if you chat with friends they need also smartphone to recieve your message and cannot call for free .we are only calling for those friends who actually having a Whats’app application. and the message are not sent into phone inbox and sometimes recovery take huge time.
The main Big problem is the message will send only those people whose actually have contact number in phone.The one main reason why I like dislike this the DP is shown anyone whose having your phone number.
Whats app also reduces the picture clearity if we send a picture to some friends then its quality will became low. and also the Maximum limit size for sending a video is 16 MB. that was totally worst. what happens if a apple made 4k video of 10 seconds its approximate size is 100+ mB can they send a Video That was a big question they need to convert into low clearity and then send it.