diff --git a/apps/tests/ui/text-field/text-field-tests.ts b/apps/tests/ui/text-field/text-field-tests.ts
index b2e780d18..945af6e8a 100644
--- a/apps/tests/ui/text-field/text-field-tests.ts
+++ b/apps/tests/ui/text-field/text-field-tests.ts
@@ -67,7 +67,7 @@ export var testSetText = function () {
 
         var expectedValue = "Hello, world!";
         var actualValue = textFieldTestsNative.getNativeText(textField);
-        TKUnit.assert(actualValue === expectedValue, "Actual: " + actualValue + "; Expected: " + expectedValue);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
     });    
 }
 
@@ -79,7 +79,7 @@ export var testSetTextNull = function () {
 
         var expectedValue = "";
         var actualValue = textFieldTestsNative.getNativeText(textField);
-        TKUnit.assert(actualValue === expectedValue, "Actual: " + actualValue + "; Expected: " + expectedValue);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
     });
 }
 
@@ -91,7 +91,75 @@ export var testSetTextUndefined = function () {
 
         var expectedValue = "";
         var actualValue = textFieldTestsNative.getNativeText(textField);
-        TKUnit.assert(actualValue === expectedValue, "Actual: " + actualValue + "; Expected: " + expectedValue);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
+    });
+}
+
+export var testSetTextToZero = function () {
+    helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<viewModule.View>) {
+        var textField = <textFieldModule.TextField>views[0];
+
+        (<any>textField).text = 0;
+
+        var expectedValue = "0";
+        var actualValue = textFieldTestsNative.getNativeText(textField);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
+    });
+}
+
+function createFormattedString(value: any): formattedStringModule.FormattedString {
+    var span = new spanModule.Span();
+    span.text = value;
+    var result = new formattedStringModule.FormattedString();
+    result.spans.push(span);
+    return result;
+}
+
+export var testSetTextWithSpan = function () {
+    helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<viewModule.View>) {
+        var textField = <textFieldModule.TextField>views[0];
+  
+        textField.formattedText = createFormattedString("Hello, world!");
+
+        var expectedValue = "Hello, world!";
+        var actualValue = textFieldTestsNative.getNativeText(textField);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
+    });
+}
+
+export var testSetTextNullWithSpan = function () {
+    helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<viewModule.View>) {
+        var textField = <textFieldModule.TextField>views[0];
+
+        textField.formattedText = createFormattedString(null);
+
+        var expectedValue = "";
+        var actualValue = textFieldTestsNative.getNativeText(textField);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
+    });
+}
+
+export var testSetTextUndefinedWithSpan = function () {
+    helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<viewModule.View>) {
+        var textField = <textFieldModule.TextField>views[0];
+
+        textField.formattedText = createFormattedString(undefined);
+
+        var expectedValue = "";
+        var actualValue = textFieldTestsNative.getNativeText(textField);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
+    });
+}
+
+export var testSetTextToZeroWithSpan = function () {
+    helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<viewModule.View>) {
+        var textField = <textFieldModule.TextField>views[0];
+
+        textField.formattedText = createFormattedString(0);
+
+        var expectedValue = "0";
+        var actualValue = textFieldTestsNative.getNativeText(textField);
+        TKUnit.assertEqual(actualValue, expectedValue, "TextField native text");
     });
 }
 
diff --git a/text/formatted-string.android.ts b/text/formatted-string.android.ts
index 37665792e..d9d40ff55 100644
--- a/text/formatted-string.android.ts
+++ b/text/formatted-string.android.ts
@@ -1,5 +1,6 @@
 import formattedStringCommon = require("./formatted-string-common");
 import spanModule = require("text/span");
+import types = require("utils/types");
 
 global.moduleMerge(formattedStringCommon, exports);
 
@@ -12,7 +13,7 @@ export class FormattedString extends formattedStringCommon.FormattedString {
         var spanText = "";
         for (i = 0; i < this.spans.length; i++) {
             var span = <spanModule.Span>this.spans.getItem(i);
-            spanText = span.text || "";
+            spanText = types.toUIString(span.text);
             spanLength = spanText.length;
             if (spanLength !== 0) {
                 ssb.insert(spanStart, spanText);
diff --git a/text/formatted-string.ios.ts b/text/formatted-string.ios.ts
index 7402ee3bc..cde590c76 100644
--- a/text/formatted-string.ios.ts
+++ b/text/formatted-string.ios.ts
@@ -1,5 +1,6 @@
 import formattedStringCommon = require("./formatted-string-common");
 import spanModule = require("text/span");
+import types = require("utils/types");
 
 global.moduleMerge(formattedStringCommon, exports);
 
@@ -12,7 +13,7 @@ export class FormattedString extends formattedStringCommon.FormattedString {
         var spanText = "";
         for (i = 0; i < this.spans.length; i++) {
             var span = <spanModule.Span>this.spans.getItem(i);
-            spanText = span.text || "";
+            spanText = types.toUIString(span.text);
             spanLength = spanText.length;
             span.updateSpanModifiers(this);
             var attrDict = NSMutableDictionary.alloc().init();
diff --git a/ui/editable-text-base/editable-text-base.android.ts b/ui/editable-text-base/editable-text-base.android.ts
index 6540edc21..de260100e 100644
--- a/ui/editable-text-base/editable-text-base.android.ts
+++ b/ui/editable-text-base/editable-text-base.android.ts
@@ -133,7 +133,7 @@ export class EditableTextBase extends common.EditableTextBase {
 
     public _onTextPropertyChanged(data: dependencyObservable.PropertyChangeData) {
         if (this._android) {
-            var newValue = types.isNullOrUndefined(data.newValue) ? "" : data.newValue + "";
+            var newValue = types.toUIString(data.newValue);
             this.android.setText(newValue, android.widget.TextView.BufferType.EDITABLE);
         }
     }
diff --git a/ui/text-base/text-base.android.ts b/ui/text-base/text-base.android.ts
index e06054bc7..ea6058cdb 100644
--- a/ui/text-base/text-base.android.ts
+++ b/ui/text-base/text-base.android.ts
@@ -5,7 +5,7 @@ import dependencyObservable = require("ui/core/dependency-observable");
 export class TextBase extends common.TextBase {
     public _onTextPropertyChanged(data: dependencyObservable.PropertyChangeData) {
         if (this.android) {
-            var newValue = types.isNullOrUndefined(data.newValue) ? "" : data.newValue + "";
+            var newValue = types.toUIString(data.newValue);
             this.android.setText(newValue);
         }
     }
diff --git a/ui/text-base/text-base.ios.ts b/ui/text-base/text-base.ios.ts
index bf18342e6..09750986e 100644
--- a/ui/text-base/text-base.ios.ts
+++ b/ui/text-base/text-base.ios.ts
@@ -4,7 +4,7 @@ import dependencyObservable = require("ui/core/dependency-observable");
 
 export class TextBase extends common.TextBase {
     public _onTextPropertyChanged(data: dependencyObservable.PropertyChangeData) {
-        var newValue = types.isNullOrUndefined(data.newValue) ? "" : data.newValue + "";
+        var newValue = types.toUIString(data.newValue);
         this.ios.text = newValue;
         this.style._updateTextDecoration();
         this.style._updateTextTransform();
diff --git a/utils/types.d.ts b/utils/types.d.ts
index bf84d102b..59640a2d6 100644
--- a/utils/types.d.ts
+++ b/utils/types.d.ts
@@ -83,4 +83,10 @@
          */
         baseClassInfo: ClassInfo;
     }
+
+    /**
+     * Returns a string representation of a string to be shown in UI.
+     * @param object The object which class hierarchy will be get.
+     */
+    export function toUIString(object): string;
 }
\ No newline at end of file
diff --git a/utils/types.ts b/utils/types.ts
index 4270c7209..7b52ba8cd 100644
--- a/utils/types.ts
+++ b/utils/types.ts
@@ -98,4 +98,8 @@ export class ClassInfo {
         }
         return result;
     }
+}
+
+export function toUIString(obj): string {
+    return isNullOrUndefined(obj) ? "" : obj + "";
 }
\ No newline at end of file