Measuring cellular signal strength

Question

I am developing a non-appstore app for iOS. I want to read the cellular signal strength in my code.

I know Apple doesn't provide any API by which we can achieve this.

Is there any private API that can be used to achieve this? I have gone through the various threads regarding this issue but could not find any relevant info.

It is completely possible because there is an app in the app-store for detecting the carrier's signal strength.

Answer 1

Get signalStreght IOS9:

UIApplication *app = [UIApplication sharedApplication];   NSArray *subviews = [[[app valueForKey:@"statusBar"]     valueForKey:@"foregroundView"] subviews];   NSString *dataNetworkItemView = nil;        for (id subview in subviews) {      if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarSignalStrengthItemView") class]])      {           dataNetworkItemView = subview;           break;       }    }   int signalStrength = [[dataNetworkItemView valueForKey:@"signalStrengthRaw"] intValue];   NSLog(@"signal %d", signalStrength);