What is the point of using WhatsApp to make free calls when you are required to top-up using your mobile phone network.
In reality and in a way making free calls isn’t really free. Although the App itself is free you still need to be connected to the internet, and connecting to the internet requires payment to your mobile phone network to get internet access. So you have to pay for it.
If you purchase a cash top-up as PAYG of which the minimum is £5 then data charges will quickly drain your the cash you put into the phone. Either way, if you purchase a subscription, pack or bundle through your network or carrier then you are still paying to talk or text for free. So, in reality WhatsApp is free to use if you pay the mobile phone network to download the App and use it. So you still have to pay for it.
The other way is to use WhatsApp over a wireless network or wifi but again in reality it is not free, you have to pay the wifi network company. You can go to a café but only if you want to treat yourself to a coffee which you will have to pay for the coffee say about £3.50 and then get your free wifi access to use whatsApp.
Free Wifi-hotspots – again, unless you are mostly on the go, do you really want to leave the comfort of your home to sit in a café, station, airport, stand outside or even go somewhere public with strangers around you and then you have to think about network security as well. Asking around for passwords are hassle as well.
So, in conclusion, whatsApp as an app is free but calling and messaging isn’t in a way.