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I'm using the reachability API to detect my current connection, but I can only distinguish between WIFI and 3G.
I get the following flags:
LTE: kSCNetworkReachabilityFlagsIsLocalAddress|kSCNetworkReachabilityFlagsIsWWAN|kSCNetworkReachabilityFlagsTransientConnection|kSCNetworkReachabilityFlagsReachable
WIFI: kSCNetworkReachabilityFlagsIsDirect|kSCNetworkReachabilityFlagsReachable
The problem is that LTE returns the same flags as a 3G connection. Is there any way to determine whether the user currently has LTE or 3G?
474
Make sure that your device is connected to a Wi-Fi or cellular network. Tap Settings > General > About. If an update is available, you'll see an option to update your carrier settings. To see the version of carrier settings on your device, tap Settings > General > About and look next to Carrier.
In the viewWillAppear method, add an observer to the Notification Center, so every time the network state changes, like from Wifi goes to Cellular, this will be detected instantly and call the reachabilityChanged method. And in the viewDidDisappear method, remove the stop the notifier and remove the observer.
As of iOS 7, you can find this out using the currentRadioAccessTechnology property of CTTelephonyNetworkInfo in the CoreTelephony framework.
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
CTTelephonyNetworkInfo *networkInfo = [CTTelephonyNetworkInfo new];
if ([networkInfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyLTE]) {
// ...
}
I wonder if this hidden Core Telephony API can provide you with enough info for you to determine whether you're attached to an LTE or a slower technology.
CTRegistrationGetCurrentMaxAllowedDataRate();
It might be worth experimenting with.
More about using private APIs here: iPhone mobile number using Core telephony
However, I've read that your app will be rejected by apple if you use private APIs.
3
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