diff --git a/apps/tests/http-tests.ts b/apps/tests/http-tests.ts
index a3c7b49a7..30bd859b0 100644
--- a/apps/tests/http-tests.ts
+++ b/apps/tests/http-tests.ts
@@ -50,6 +50,21 @@ export var test_getString_fail = function (done) {
     });
 };
 
+export var test_getString_fail_when_result_is_not_string = function (done) {
+    var result;
+
+    http.getJSON({ url: "https://httpbin.org/image/png", method: "GET" }).catch(function (e) {
+        result = e;
+        try {
+            TKUnit.assert(result instanceof Error, "Result from getString().catch() should be Error! Current type is " + typeof result);
+            done(null);
+        }
+        catch (err) {
+            done(err);
+        }
+    });
+};
+
 export var test_getJSON_isDefined = function () {
     TKUnit.assert(typeof (http.getJSON) !== "undefined", "Method http.getJSON() should be defined!");
 };
@@ -91,7 +106,22 @@ export var test_getJSON_fail = function (done) {
     http.getJSON({ url: "hgfttp://httpbin.org/get", method: "GET", timeout: 2000 }).catch(function (e) {
         result = e;
         try {
-            TKUnit.assert(result instanceof Error, "Result from getJSON().fail() should be Error! Current type is " + typeof result);
+            TKUnit.assert(result instanceof Error, "Result from getJSON().catch() should be Error! Current type is " + typeof result);
+            done(null);
+        }
+        catch (err) {
+            done(err);
+        }
+    });
+};
+
+export var test_getJSON_fail_when_result_is_not_JSON = function (done) {
+    var result;
+
+    http.getJSON({ url: "https://httpbin.org/html", method: "GET" }).catch(function (e) {
+        result = e;
+        try {
+            TKUnit.assert(result instanceof Error, "Result from getJSON().catch() should be Error! Current type is " + typeof result);
             done(null);
         }
         catch (err) {
@@ -138,7 +168,22 @@ export var test_getImage_fail = function (done) {
     http.getImage({ url: "hgfttp://www.google.com/images/errors/logo_sm_2.png", method: "GET", timeout: 2000 }).catch(function (e) {
         result = e;
         try {
-            TKUnit.assert(result instanceof Error, "Result from getImage().fail() should be Error! Current type is " + typeof result);
+            TKUnit.assert(result instanceof Error, "Result from getImage().catch() should be Error! Current type is " + typeof result);
+            done(null);
+        }
+        catch (err) {
+            done(err);
+        }
+    });
+};
+
+export var test_getImage_fail_when_result_is_not_image = function (done) {
+    var result;
+
+    http.getImage({ url: "https://httpbin.org/html", method: "GET" }).catch(function (e) {
+        result = e;
+        try {
+            TKUnit.assert(result instanceof Error, "Result from getImage().catch() should be Error! Current type is " + typeof result);
             done(null);
         }
         catch (err) {
@@ -157,7 +202,7 @@ export var test_request_shouldFailIfOptionsUrlIsNotDefined = function (done) {
     http.request({ url: undefined, method: undefined }).catch(function (e) {
         result = e;
         try {
-            TKUnit.assert(result instanceof Error, "Result from request().fail() should be Error! Current type is " + typeof result);
+            TKUnit.assert(result instanceof Error, "Result from request().catch() should be Error! Current type is " + typeof result);
             done(null);
         }
         catch (err) {
@@ -171,7 +216,7 @@ export var test_request_requestShouldTimeout = function (done) {
     http.request({ url: "http://10.255.255.1", method: "GET", timeout: 500 }).catch(function (e) {
         result = e;
         try {
-            TKUnit.assert(result instanceof Error, "Result from request().fail() should be Error! Current type is " + typeof result);
+            TKUnit.assert(result instanceof Error, "Result from request().catch() should be Error! Current type is " + typeof result);
             done(null);
         }
         catch (err) {
diff --git a/apps/tests/ui/list-view/list-view-tests.ts b/apps/tests/ui/list-view/list-view-tests.ts
index cc1c113d3..6a744d647 100644
--- a/apps/tests/ui/list-view/list-view-tests.ts
+++ b/apps/tests/ui/list-view/list-view-tests.ts
@@ -473,7 +473,7 @@ export function test_loadMoreItems_is_raised_when_scroll_to_last_item() {
         listView.scrollToIndex(MANY_ITEMS.length - 1);
 
         TKUnit.wait(ASYNC);
-        TKUnit.assertEqual(loadMoreItemsCount, 1, "loadMoreItemsCount");
+        TKUnit.assert(loadMoreItemsCount > 0, "loadMoreItemsCount");
     };
 
     helper.buildUIAndRunTest(listView, testAction);
diff --git a/http/http-request.ios.ts b/http/http-request.ios.ts
index e22e73eb9..da8db20ea 100644
--- a/http/http-request.ios.ts
+++ b/http/http-request.ios.ts
@@ -62,8 +62,14 @@ export function request(options: http.HttpRequestOptions): Promise<http.HttpResp
                                 toString: () => { return NSDataToString(data); },
                                 toJSON: () => { return JSON.parse(NSDataToString(data)); },
                                 toImage: () => {
-                                    return new Promise<imageSource.ImageSource>((resolveImage, reject) => {
-                                        resolveImage(imageSource.fromData(data));
+                                    return new Promise<imageSource.ImageSource>((resolveImage, rejectImage) => {
+                                        var img = imageSource.fromData(data);
+                                        if (img instanceof imageSource.ImageSource) {
+                                            resolveImage(img);
+                                        } else {
+                                            rejectImage(new Error("Response content may not be converted to an Image"));
+                                        }
+
                                     });
                                 }
                             },
diff --git a/http/http.ts b/http/http.ts
index d846f241d..e34de3aab 100644
--- a/http/http.ts
+++ b/http/http.ts
@@ -6,14 +6,28 @@ global.moduleMerge(httpRequest, exports);
 export function getString(arg: any): Promise<string> {
     return new Promise<string>((resolve, reject) => {
         httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
-            .then(r => resolve(r.content.toString()), e => reject(e));
+            .then(r => {
+            try {
+                var str = r.content.toString();
+                resolve(str);
+            } catch (e) {
+                reject(e);
+            }
+        }, e => reject(e));
     });
 }
 
 export function getJSON<T>(arg: any): Promise<T> {
     return new Promise<T>((resolve, reject) => {
         httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
-            .then(r => resolve(r.content.toJSON()), e => reject(e));
+            .then(r => {
+            try {
+                var json = r.content.toJSON();
+                resolve(json);
+            } catch (e) {
+                reject(e);
+            }
+        }, e => reject(e));
     });
 }
 
@@ -21,7 +35,7 @@ export function getImage(arg: any): Promise<image.ImageSource> {
     return new Promise<image.ImageSource>((resolve, reject) => {
         httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
             .then(r => {
-            r.content.toImage().then(source => resolve(source));
+            r.content.toImage().then(source => resolve(source), e => reject(e));
         }, e => reject(e));
     });
 }
\ No newline at end of file