Worst UI Ive ever seen in any calling app. Its very complex and time-consuming needing more clicks to perform a simple call. Also loudspeaker icon should simply enable the loudspeaker but it gives you two options to choose from. What a joke! Now the functionality part. Dont know who performed the software testing in this app. Call doesnt connect. Simply gets lost. Call quality is bad too for Bangladesh. As soon as I knew the app was developed by the Ultra Mobile team, I knew itd be good for nothing and as bad as Ultra Mobile itself. I was Ultra customer. Anyway Im saying goodbye to this app once my balance of $2.00 is finished.