Forcing cellular connectivity

Code Block 
var connection: NWConnection?
  func startConnection(url: URL) {
    let pathMonitor = NWPathMonitor()
    pathMonitor.pathUpdateHandler = { path in
      if path.usesInterfaceType(.wifi) {
        print("Path is Wi-Fi")
      } else if path.usesInterfaceType(.cellular) {
        print("Path is Cellular")
      } else if path.usesInterfaceType(.wiredEthernet) {
        print("Path is Wired Ethernet")
      } else if path.usesInterfaceType(.loopback) {
        print("Path is Loopback")
      } else if path.usesInterfaceType(.other) {
        print("Path is other")
      }
    }
    pathMonitor.start(queue: .main)
     
     
    let params = NWParameters.tls
    params.requiredInterfaceType = .cellular
    params.prohibitExpensivePaths = false
    params.prohibitedInterfaceTypes = [.wifi]
    let connection = NWConnection(host: NWEndpoint.Host(url.host!), port: 443, using: params)
    self.connection?.stateUpdateHandler = { (newState) in
      print("This is stateUpdateHandler:")
      switch (newState) {
        case .ready:
          print("State: Ready\n")
        case .setup:
          print("State: Setup\n")
        case .cancelled:
          print("State: Cancelled\n")
        case .preparing:
          print("State: Preparing\n")
        default:
          print("ERROR! State not defined!\n")
      }
    }
     
    connection.start(queue: .main)
    self.connection = connection
    print(connection.debugDescription)
  }