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

Answer 2

Maybe this is a litle dumb but check that XCode Maps capabilities is active :) .

Answer 3

On my iOS device this happens because Settings->Privacy->Location Settings<(app name)->Allow Location Settings isn't set to either "Never" or "While Using the App". Once I set it - it works.

Answer 4

Tray adding CoreTelephony to the AppDelegate maybe? You ViewController implementation is not accessing any CoreTelephony framework methods, thus your problem lies elsewhere.