diff --git a/ably-ios/ARTAuth+Private.h b/ably-ios/ARTAuth+Private.h
index ab2869711..026c8c5d6 100644
--- a/ably-ios/ARTAuth+Private.h
+++ b/ably-ios/ARTAuth+Private.h
@@ -20,6 +20,7 @@ ART_ASSUME_NONNULL_BEGIN
 
 // CONNECTED ProtocolMessage may contain a clientId
 - (void)setProtocolClientId:(NSString *)clientId;
+- (void)setTokenDetails:(ARTAuthTokenDetails *)tokenDetails;
 
 @end
 
diff --git a/ably-ios/ARTAuth.m b/ably-ios/ARTAuth.m
index 463789ce6..5d2280eb1 100644
--- a/ably-ios/ARTAuth.m
+++ b/ably-ios/ARTAuth.m
@@ -224,9 +224,9 @@ - (void)authorise:(ARTAuthTokenParams *)tokenParams options:(ARTAuthOptions *)op
                     callback(nil, error);
                 }
             } else {
-                _tokenDetails = tokenDetails;
+                [self setTokenDetails:tokenDetails];
                 if (callback) {
-                    callback(tokenDetails, nil);
+                    callback(self.tokenDetails, nil);
                 }
             }
         }];
@@ -262,6 +262,10 @@ - (void)setProtocolClientId:(NSString *)clientId {
     _protocolClientId = clientId;
 }
 
+- (void)setTokenDetails:(ARTAuthTokenDetails *)tokenDetails {
+    _tokenDetails = tokenDetails;
+}
+
 - (NSString *)getClientId {
     if (_protocolClientId) {
         // Check wildcard
diff --git a/ablySpec/RestClient.swift b/ablySpec/RestClient.swift
index cf81ad309..b374c0908 100644
--- a/ablySpec/RestClient.swift
+++ b/ablySpec/RestClient.swift
@@ -222,6 +222,72 @@ class RestClient: QuickSpec {
                 }
             }
 
+            // RSC9
+            it("should use Auth to manage authentication") {
+                let options = AblyTests.commonAppSetup()
+                let client = ARTRest(options: options)
+                let auth = client.auth
+
+                expect(auth.method.rawValue).to(equal(ARTAuthMethod.Basic.rawValue))
+
+                waitUntil(timeout: 25.0) { done in
+                    auth.requestToken(nil, withOptions: options, callback: { tokenDetailsA, errorA in
+                        if let e = errorA {
+                            XCTFail(e.description)
+                            done()
+                        }
+                        else if let currentTokenDetails = tokenDetailsA {
+                            auth.setTokenDetails(currentTokenDetails)
+                        }
+
+                        auth.authorise(nil, options: options, force: false, callback: { tokenDetailsB, errorB in
+                            if let e = errorB {
+                                XCTFail(e.description)
+                                done()
+                            }
+                            // Use the same token because it is valid
+                            expect(auth.tokenDetails?.token).to(equal(tokenDetailsB?.token))
+                            done()
+                        })
+                    })
+                }
+            }
+
+            // RSC10
+            it("should request another token after current one is no longer valid") {
+                let options = AblyTests.commonAppSetup()
+                let client = ARTRest(options: options)
+                let auth = client.auth
+
+                let tokenParams = ARTAuthTokenParams()
+                tokenParams.ttl = 3.0 //Seconds
+
+                waitUntil(timeout: 25.0) { done in
+                    auth.requestToken(tokenParams, withOptions: options) { tokenDetailsA, errorA in
+                        if let e = errorA {
+                            XCTFail(e.description)
+                            done()
+                        }
+                        else if let currentTokenDetails = tokenDetailsA {
+                            auth.setTokenDetails(currentTokenDetails)
+                        }
+
+                        // Delay for token expiration
+                        delay(tokenParams.ttl) {
+                            auth.authorise(tokenParams, options: options, force: false) { tokenDetailsB, errorB in
+                                if let e = errorB {
+                                    XCTFail(e.description)
+                                    done()
+                                }
+                                // Different token
+                                expect(tokenDetailsA?.token).toNot(equal(tokenDetailsB?.token))
+                                done()
+                            }
+                        }
+                    }
+                }
+            }
+
         } //RestClient
     }
 }
\ No newline at end of file
diff --git a/ablySpec/TestUtilities.swift b/ablySpec/TestUtilities.swift
index 4296144a1..5e43bf74b 100644
--- a/ablySpec/TestUtilities.swift
+++ b/ablySpec/TestUtilities.swift
@@ -172,6 +172,15 @@ func getTestToken() -> String {
     return token ?? ""
 }
 
+public func delay(seconds: NSTimeInterval, closure: ()->()) {
+    dispatch_after(
+        dispatch_time(
+            DISPATCH_TIME_NOW,
+            Int64(seconds * Double(NSEC_PER_SEC))
+        ),
+        dispatch_get_main_queue(), closure)
+}
+
 // TODO: after merge use robrix/Box
 class Box<T> {
     let unbox: T