Is it possible to detect LTE connection using iOS SDK?

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?

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]) {
    // ...
}

Ramin Ahangarzadeh

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.

来源：https://stackoverflow.com/questions/10159167/is-it-possible-to-detect-lte-connection-using-ios-sdk

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ios

sdk

wireless

connectivity