I have been having a hard time with the adhan volume on my IOS phone device. I have noticed that Android users have "force notifications" or an option to set the "adhan volume." That is not fair!
That being said, I open the app to listen to the entire Adhan for Fajr and Maghrib. However, it always plays on low! So low, I did not even know it was playing and that it was time for iftar until I looked at my screen. I had to increase my volume right then and there. It would be nice if there were an option to adjust this volume so I could hear it.