http://stackoverflow.com/questions/40799327/memory-leaks-by-click-screen-network-many-times-lead-to-crash-in-real-device/40809611#40809611

AFHTTPSessionManagerSingleton.m

// Don't declare this `static`, as you never want to be tempted (or accidentally) refer to this static directly:
//
// static AFHTTPSessionManager *requestManager ;

@implementation Mysevers  // this was the name you used

// always use this singleton

+ (AFHTTPSessionManager *)sharedHTTPSession {
    static dispatch_once_t onceToken;
    static AFHTTPSessionManager *requestManager; // instead, make it a local `static`
    dispatch_once(&onceToken, ^{
        requestManager = [AFHTTPSessionManager manager];
        requestManager.requestSerializer.timeoutInterval = 10;
    });
    return requestManager;
}

@end