diff --git a/Riot/Assets/en.lproj/Vector.strings b/Riot/Assets/en.lproj/Vector.strings
index ae7d57306..40986383a 100644
--- a/Riot/Assets/en.lproj/Vector.strings
+++ b/Riot/Assets/en.lproj/Vector.strings
@@ -796,6 +796,7 @@
 // MARK: - Device Verification
 "device_verification_title" = "Verify device";
 "device_verification_security_advice" = "For maximum security, we recommend you do this in person or use another trusted means of communication";
+"device_verification_cancelled" = "The other party cancelled the verification.";
 
 // MARK: - Start
 "device_verification_start_title" = "Verify by comparing a short text string";
diff --git a/Riot/Generated/Strings.swift b/Riot/Generated/Strings.swift
index 2fb0a33b3..2bcd8b52a 100644
--- a/Riot/Generated/Strings.swift
+++ b/Riot/Generated/Strings.swift
@@ -426,6 +426,10 @@ internal enum VectorL10n {
   internal static var decline: String { 
     return VectorL10n.tr("Vector", "decline") 
   }
+  /// The other party cancelled the verification.
+  internal static var deviceVerificationCancelled: String { 
+    return VectorL10n.tr("Vector", "device_verification_cancelled") 
+  }
   /// For maximum security, we recommend you do this in person or use another trusted means of communication
   internal static var deviceVerificationSecurityAdvice: String { 
     return VectorL10n.tr("Vector", "device_verification_security_advice") 
diff --git a/Riot/Modules/DeviceVerification/DeviceVerificationCoordinator.swift b/Riot/Modules/DeviceVerification/DeviceVerificationCoordinator.swift
index cc31618b7..1b1d9933b 100644
--- a/Riot/Modules/DeviceVerification/DeviceVerificationCoordinator.swift
+++ b/Riot/Modules/DeviceVerification/DeviceVerificationCoordinator.swift
@@ -84,11 +84,11 @@ final class DeviceVerificationCoordinator: DeviceVerificationCoordinatorType {
                 return // TODO
             }
 
-            //let rootCoordinator = sself.createDeviceVerificationStartCoordinator(otherUser: otherUser, otherDevice: otherDevice)
+            let rootCoordinator = sself.createDeviceVerificationStartCoordinator(otherUser: otherUser, otherDevice: otherDevice)
 
             // TODO: To remove. Only for dev
-            let rootCoordinator = DeviceVerificationVerifyCoordinator(session: sself.session)
-            rootCoordinator.delegate = self
+            //let rootCoordinator = DeviceVerificationVerifyCoordinator(session: sself.session)
+            //rootCoordinator.delegate = self
 
             rootCoordinator.start()
 
diff --git a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewController.swift b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewController.swift
index 0078b56ce..33254a10a 100644
--- a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewController.swift
+++ b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewController.swift
@@ -157,7 +157,9 @@ final class DeviceVerificationStartViewController: UIViewController {
         case .loading:
             self.renderLoading()
         case .loaded:
-            self.renderLoaded()
+            self.renderStarted()
+        case .cancelled(let reason):
+            self.renderCancelled(reason: reason)
         case .error(let error):
             self.render(error: error)
         }
@@ -167,13 +169,21 @@ final class DeviceVerificationStartViewController: UIViewController {
         self.activityPresenter.presentActivityIndicator(on: self.view, animated: true)
     }
     
-    private func renderLoaded() {
+    private func renderStarted() {
         self.activityPresenter.removeCurrentActivityIndicator(animated: true)
 
         self.verifyButtonBackgroundView.isHidden = true
         self.waitingPartnerLabel.isHidden = false
         self.useLegacyVerificationLabel.isHidden = false
     }
+
+    private func renderCancelled(reason: MXTransactionCancelCode) {
+        self.activityPresenter.removeCurrentActivityIndicator(animated: true)
+
+        self.errorPresenter.presentError(from: self, title: "", message: VectorL10n.deviceVerificationCancelled, animated: true) {
+            self.viewModel.process(viewAction: .cancel)
+        }
+    }
     
     private func render(error: Error) {
         self.activityPresenter.removeCurrentActivityIndicator(animated: true)
diff --git a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewModel.swift b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewModel.swift
index 261902fb9..893881d21 100644
--- a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewModel.swift
+++ b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewModel.swift
@@ -114,7 +114,10 @@ final class DeviceVerificationStartViewModel: DeviceVerificationStartViewModelTy
         case MXSASTransactionStateShowSAS:
             self.coordinatorDelegate?.deviceVerificationStartViewModel(self, didCompleteWithOutgoingTransaction: transaction)
         case MXSASTransactionStateCancelled:
-            self.coordinatorDelegate?.deviceVerificationStartViewModel(self, didTransactionCancelled: transaction)
+            guard let reason = transaction.reasonCancelCode else {
+                return
+            }
+            self.update(viewState: .cancelled(reason))
         default:
             break
         }
diff --git a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewState.swift b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewState.swift
index 5536d4bf9..5a8df99d6 100644
--- a/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewState.swift
+++ b/Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewState.swift
@@ -21,6 +21,7 @@ import Foundation
 /// DeviceVerificationStartViewController view state
 enum DeviceVerificationStartViewState {
     case loading
-    case loaded
+    case loaded     // started
+    case cancelled(MXTransactionCancelCode)
     case error(Error)
 }
diff --git a/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewController.swift b/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewController.swift
index 1d976faca..799d25cd2 100644
--- a/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewController.swift
+++ b/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewController.swift
@@ -175,7 +175,11 @@ final class DeviceVerificationVerifyViewController: UIViewController {
     }
 
     private func renderCancelled(reason: MXTransactionCancelCode) {
-        // TODO
+        self.activityPresenter.removeCurrentActivityIndicator(animated: true)
+
+        self.errorPresenter.presentError(from: self, title: "", message: VectorL10n.deviceVerificationCancelled, animated: true) {
+            self.viewModel.process(viewAction: .cancel)
+        }
     }
 
     private func renderCancelledByMe(reason: MXTransactionCancelCode) {
diff --git a/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewModel.swift b/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewModel.swift
index a52b5301e..cb48c584d 100644
--- a/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewModel.swift
+++ b/Riot/Modules/DeviceVerification/Verify/DeviceVerificationVerifyViewModel.swift
@@ -66,21 +66,26 @@ final class DeviceVerificationVerifyViewModel: DeviceVerificationVerifyViewModel
     func process(viewAction: DeviceVerificationVerifyViewAction) {
         switch viewAction {
         case .confirm:
-            self.confirm()
+            self.confirmTransaction()
         case .complete:
             self.coordinatorDelegate?.deviceVerificationVerifyViewModelDidComplete(self)
         case .cancel:
+            self.cancelTransaction()
             self.coordinatorDelegate?.deviceVerificationVerifyViewModelDidCancel(self)
         }
     }
     
     // MARK: - Private
     
-    private func confirm() {
+    private func confirmTransaction() {
         self.update(viewState: .loading)
 
         self.transaction.confirmSASMatch()
     }
+
+    private func cancelTransaction() {
+        self.transaction.cancel(with: MXTransactionCancelCode.user())
+    }
     
     private func update(viewState: DeviceVerificationVerifyViewState) {
         self.viewDelegate?.deviceVerificationVerifyViewModel(self, didUpdateViewState: viewState)