Cryptocurrency is a type of symbolic currency which has no real form. It only exists in the internet world. Transactions using it are only possible online whose entire activity is accomplished in a secure process called cryptography. Since 2016, it has become an emerging market.
Cryptocurrency is a peer-to-peer system. It has no third party control. So no one else knows who is exchanging this digital currency with whom. Again, it can be traded without anonymity. However, its encrypted ledger controls all transactions from being risky. No country's government has the power to interfere in the value of cryptocurrency. Therefore, in many countries of the world, the government of that country has a ban on this digital currency.
Usually when we send money to someone, we take the help of the bank. Again, if the bank is not open, we send it through mobile banking (bKash, Rocket, UCash) or in many cases through courier and post office. The service provider collects service charge for completing this process. But since in cryptocurrency there is no need for a third party. So there is no extra charge. However, there is a minimum charge. To put it more simply, there are some app-based services. Many times mobile GP, My Robi or Dington, cam scan is used on mobile. If you recharge through these, you get points and then you can buy data with them. And points are also available by looking at the advertisement. Later talking and cloud space is available using that point.