Open Radar

 
The CTCarrier properties mobileNetworkCode and mobileCountryCode are set even if the SIM card is taken out of the device.

The documentation clearly states:

The value for this property is nil if any of the following apply:
- The device is in Airplane mode.
- There is no SIM card in the device.
- The device is outside of cellular service range.


Steps to Reproduce:
Remove the SIM card of an iPhone. Run this code:

	CTCarrier *carrier = [[[CTTelephonyNetworkInfo alloc] init] autorelease].subscriberCellularProvider;
	NSLog(@"mobileNetworkCode: %@ mobileCountryCode: %@", carrier.mobileNetworkCode, carrier.mobileCountryCode);

Expected Results:
This should be logged:
mobileNetworkCode: (null) mobileCountryCode: (null)

Actual Results:
This is logged (Carrier T-Mobile Germany in my case):
mobileNetworkCode: 01 mobileCountryCode: 262

Regression:
This worked under iOS 5.1.

Notes:
Under iOS 6.0 there seems to be no way to find out if the user is actually logged in to a specific carrier's network.