For now, you can buy phone numbers from US and Canada. We are working on it to add more countries as soon as possible.
You can call all of the countries and regions worldwide
For now, we just accept google play in-app purchases. You can download the android app from the google play store and buy numbers from the app.
It depends on the destination number and varies based on countries and operators. You can check call pricing from the pricing page!
All Incoming calls and messages are free on all the number packages.
If you want to have outgoing calls or send messages, you need to buy additional credits.