Chabla works in all major mobile networks as well as in wireless networks in the countries in which Chabla has been published. That being said, both parties of a phone call should be in one of the countries where Chabla is available and launched so that we can ensure the quality of the call. Chabla call quality will vary depending on telephone networks and network connections, so that the fastest connections also provide the best quality for calls. You should always first test the network quality of the phone or tablet before starting a Chabla call.