Skype is also the only reliable option for VOIP calling on Android, which is unfortunate since the Android Skype client is buggy and missing some obviously need

Skype is also the only reliable option for VOIP calling on Android, which is unfortunate since the Android Skype client is buggy and missing some obviously needed features. The alternatives (groove ip, sipdroid, csipsimple) are even flakier and/or require you to have an account with a reliable sip provider.