How to delete a configuration profile on your iPhone
                  
                                    - If the app has a configuration profile, delete it. 
 	- Go to Settings > General > Device Management, Profile Management, or Profile & Device Management, then tap on "boom! Red APN Settings" configuration profile.
 	- Then tap Delete Profile. If asked, enter your device passcode, then tap Delete.
 
  	- Restart your iPhone, iPad, or iPod touch. (https://support.apple.com/kb/HT201559)