In the iPhone settings I cannot see a list of numbers in the Reverd contact
You are probably trying to see or edit the single “Reverd” contact with thousands of community reported numbers as provided by the Reverd application. This is easy and fast in latest iPhones but it is almost impossible in older devises with poor RAM and configs.
1. Simply restart the phone and try to access the “Reverd” contact.
2. Hard reset the phone to flush the memory. To hard reset, one needs to hold the home and on/off switch simultaneously for 5 seconds until the Apple logo appears and allow the phone to start. Then try to access the “Reverd” contact.
3. Or maybe buy a new phone.