Unable to retrieve CarrierName

Question

Using iPhone6, Xcode 8.1, running iOS 10.1.1, executing the following Swift code I keep getting

Unable to retrieve CarrierName

Error mes

Answer 1

As a solution to a different issue I did the following. Whether this fixes it or just suppresses the msg I don't know, as I was getting the msg but it was never crashing my app.

In Xcode

• Click on your active scheme name right next to the Stop button
• Click on Edit Scheme....
• in Run (Debug) select the Arguments tab
• in Environment Variables click +
• add variable: OS_ACTIVITY_MODE = disable

credit here : https://stackoverflow.com/a/40160779