Determining 3G vs Edge

Question

I know that the reachability example allows detection of whether network is accessible via Wifi or Cell, but is there a way to determine whether the cell connection is over

Answer 1

As of iOS 7, there's now a public way to do so:

CTTelephonyNetworkInfo *telephonyInfo = [CTTelephonyNetworkInfo new];
NSLog(@"Current Radio Access Technology: %@", telephonyInfo.currentRadioAccessTechnology);
[NSNotificationCenter.defaultCenter addObserverForName:CTRadioAccessTechnologyDidChangeNotification 
                                                object:nil 
                                                 queue:nil 
                                            usingBlock:^(NSNotification *note) 
{
    NSLog(@"New Radio Access Technology: %@", telephonyInfo.currentRadioAccessTechnology);
}];

Read up more on my article in objc.io.