have you compared market prices ? I would like to understand the cost of IP telephony will be lower or higher than it is now on the market.
as I understand it, you can choose a convenient tariff for both mobile and IP telephony.
But nevertheless the cost seems to me quite high and ordinary mobile communication will be cheaper as it seems to me. And often users do not realize that their personal data is at risk.
now people do not understand how they risk when they use old technologies, but at the same time they want to pay less for cellular services.