Back button on Review Transaction screen works with sendFlowService.

src/js/controllers/review.controller.js

@@ -49,6 +49,7 @@ function reviewController(addressbookService, bitcoinCashJsService, bitcore, bit
   vm.memoExpanded = false;
 
   // Functions
+  vm.goBack = goBack;
   vm.onSuccessConfirm = onSuccessConfirm;
 
   var sendFlowData;
@@ -395,6 +396,11 @@ function reviewController(addressbookService, bitcoinCashJsService, bitcore, bit
     };
   }
 
+  function goBack() {
+    sendFlowService.popState();
+    $ionicHistory.goBack();
+  }
+
   function handleDestinationAsAddress(address, originCoin) {
     if (!address) {
       return;

www/views/review.html

@@ -3,8 +3,7 @@
     <ion-nav-title>
       {{'Review Transaction' | translate}}
     </ion-nav-title>
-    <ion-nav-back-button>
-    </ion-nav-back-button>
+    <ion-nav-back-button ng-click="vm.goBack()"></ion-nav-back-button>
   </ion-nav-bar>
 
   <ion-content class="padded-bottom-cta-with-summary bg-neutral">