• 3G connection
• Wi-Fi connection
• GPRS Edge connection

At that GPRS connection is not always can provide good communication quality to transmit voice, in that case we advice You to use CallBack service.

To start using Zadarma service you have to pass free registration https://ss.zadarma.com/registration/?lang=en. After registration You will get 0,5 $ on Your account for test calls.

Phones with Android OS

For phones with Android OS we offer to use our own program.

Zadarma program for Android is easy and comfortable to use and has next functions:

• outgoing and incoming calls both through Zadarma and other SIP services
• sending and receiving of free text messages between users of Zadarma network
• SMS sending to any country of the world by lowest prices
• real-time account balance display
• big variety of speech compression methods (codecs 729 speex an others) will provide quality on any channel
• automatic integration with phonebook

IP-telepnony (VoIP) prices:

• Russia Moscow .... 0 $
• USA.... 0 $
• China .... 0 $
• Germany .... 0,019 $, ... 

Free calls:

Argentina, Australia, Canada, China, Cyprus, Denmark, France, Germany, Greece, Hong Kong, Hungary, Ireland, Israel, Italy, Kazakhstan, Mexico, Poland, Portugal, Puerto Rico, Russia, Singapore, ...