How to turn off "Your SIM played a tone" message on iPhone 4? Each time when I get the message "Your SIM played a tone" if I don't respond instantly and close the option it gets stuck and my entire iOS 9.3.2 
doesn't respond. I have had this issue some ten times. How do I disable this?
To disable the feature do the following:

Open Settings > Phone > SIM Applications then turn off the CallerXChange Service or anything similiar to that.