The fact that it has it's own way of ringing is so annoying. Installed it on an S10+ and when I get a call the whole hell breaks loose: the volume of the ringtone is maximum, even though I set a different volume for the calls, sometimes the app runs in backgrounfld so there is no way for me to answer the call - i just stare at my wallpaper while the phone is ringing and if i go on app, the app looks as if there is no call. So the only thing I can do is to wait for the call to finish&call back.