Latest 4.3.0
License MIT
Platforms ios 8.0, osx 10.10, tvos 9.0, requires ARC
Frameworks SystemConfiguration


Reachability.swift is a replacement for Apple’s Reachability sample, re-written in Swift with closures.

It is compatible with iOS (8.0 – 11.0), OSX (10.9 – 10.13) and tvOS (9.0 – 11.0)

Inspired by

Supporting Reachability.swift

Keeping Reachability.swift up-to-date is a time consuming task. Making updates, reviewing pull requests, responding to issues and answering emails all take time.

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Version 4.0 breaking changes


If you’re adding Reachability.swift using CocoaPods, note that the framework name has changed from ReachabilitySwift to Reachability (for consistency with Carthage)


enum NetworkStatus {
    case notReachable, reachableViaWiFi, reachableViaWWAN
var currentReachabilityStatus: NetworkStatus


enum Connection {
    case none, wifi, cellular
var connection: Connection

Other changes:

  • reachableOnWWAN has been renamed to allowsCellularConnection

  • reachability.currentReachabilityString has been deprecated. Use "(reachability.connection)" instead.

  • isReachable has been deprecated. Use connection != .none instead.

  • isReachableViaWWAN has been deprecated. Use connection == .cellular instead.

  • The notification for reachability changes has been renamed from ReachabilityChangedNotification to Notification.Name.reachabilityChanged

  • All closure callbacks and notification are fired on the main queue (including when startNotifier() is called)

Got a problem?

Please read before raising an issue.



Just drop the Reachability.swift file into your project. That’s it!


CocoaPods is a dependency manager for Cocoa projects. To install Reachability.swift with CocoaPods:

  1. Make sure CocoaPods is installed.

  2. Update your Podfile to include the following:

    pod 'ReachabilitySwift'
  3. Run pod install.

  4. In your code import Reachability like so:
    import Reachability


Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.
To install Reachability.swift with Carthage:

  1. Install Carthage via Homebrew

    $ brew update
    $ brew install carthage
  2. Add github "ashleymills/Reachability.swift" to your Cartfile.

  3. Run carthage update.

  4. Drag Reachability.framework from the Carthage/Build/iOS/ directory to the Linked Frameworks and Libraries section of your Xcode project’s General settings.

  5. Add $(SRCROOT)/Carthage/Build/iOS/Reachability.framework to Input Files of Run Script Phase for Carthage.

  6. In your code import Reachability like so:
    import Reachability

Example – closures

NOTE: All closures are run on the main queue.

//declare this property where it won't go out of scope relative to your listener
let reachability = Reachability()!

reachability.whenReachable = { reachability in
    if reachability.connection == .wifi {
        print("Reachable via WiFi")
    } else {
        print("Reachable via Cellular")
reachability.whenUnreachable = { _ in
    print("Not reachable")

do {
    try reachability.startNotifier()
} catch {
    print("Unable to start notifier")

and for stopping notifications


Example – notifications

NOTE: All notifications are delivered on the main queue.

//declare this property where it won't go out of scope relative to your listener
let reachability = Reachability()!

//declare this inside of viewWillAppear

     NotificationCenter.default.addObserver(self, selector: #selector(reachabilityChanged(note:)), name: .reachabilityChanged, object: reachability)
      try reachability.startNotifier()
      print("could not start reachability notifier")


@objc func reachabilityChanged(note: Notification) {

  let reachability = note.object as! Reachability

  switch reachability.connection {
  case .wifi:
      print("Reachable via WiFi")
  case .cellular:
      print("Reachable via Cellular")
  case .none:
    print("Network not reachable")

and for stopping notifications

NotificationCenter.default.removeObserver(self, name: .reachabilityChanged, object: reachability)

Want to help?

Got a bug fix, or a new feature? Create a pull request and go for it!

Let me know!

If you use Reachability.swift, please let me know about your app and I’ll put a link here… and tell your friends!


Latest podspec

    "name": "ReachabilitySwift",
    "version": "4.3.0",
    "module_name": "Reachability",
    "homepage": "",
    "authors": {
        "Ashley Mills": "[email protected]"
    "summary": "Replacement for Apple's Reachability re-written in Swift with callbacks.",
    "license": {
        "type": "MIT"
    "platforms": {
        "ios": "8.0",
        "osx": "10.10",
        "tvos": "9.0"
    "source": {
        "git": "",
        "tag": "v4.3.0"
    "source_files": "Sources/Reachability.swift",
    "frameworks": "SystemConfiguration",
    "requires_arc": true

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