Hi folks, May I ask what is the proper way to add # character at the end of the tel schema when I try to make a phone call from my app? The code I have shared has worked for some devices and has not worked for some other devices. I'm wondering if we can use # character at the end of the phone call. it looks from Apple documentation, we can't, but when we added # character at the end of phone call it works, but not for all of our users. May I know why, and how to resolve the issue and make it works? UIApplication.shared.open(URL(string: "tel://123456789,,,1234#")!, options: [:]) { result in   if result {     print("The open URL is succeed")   } else {     print("The open URL is failed")   } }