So so. Wish I had other choices

If a regular phone call comes in while I use the app to call, this app disconnects its call. Dont blame Apple, put device in Do not disturb while using this app.
If I talk for a long time and the app needs to start charging, it simply disconnects the current call!! Unreal! Why dont you just start charging and let me continue instead of forcing me to redial???
The sound quality is bad often.
2 stars is too many!

New York +30 about MobileVOIP international calls, v1.08.255