diff --git a/apps/automated/src/ui/text-field/text-field-tests-native.android.ts b/apps/automated/src/ui/text-field/text-field-tests-native.android.ts
@@ -62,6 +62,10 @@ export function typeTextNatively(textField: TextField, text: string): void {
 	textField.android.clearFocus();
 }
 
+export function typeCharacterNatively(textField: TextField, character: string): void {
+	textField.android.append(character);
+}
+
 export function typeTextNativelyWithReturn(textField: TextField, text: string): void {
 	//
 }
diff --git a/apps/automated/src/ui/text-field/text-field-tests-native.d.ts b/apps/automated/src/ui/text-field/text-field-tests-native.d.ts
@@ -12,4 +12,5 @@ export declare function getNativeBackgroundColor(textField: textFieldModule.Text
 export declare function getNativeTextAlignment(textField: textFieldModule.TextField): string;
 export declare function getNativeFocus(textField: textFieldModule.TextField): boolean;
 export declare function typeTextNatively(textField: textFieldModule.TextField, text: string): void;
+export declare function typeCharacterNatively(textField: textFieldModule.TextField, character: string): void;
 export declare function typeTextNativelyWithReturn(textField: textFieldModule.TextField, text: string): void;
diff --git a/apps/automated/src/ui/text-field/text-field-tests-native.ios.ts b/apps/automated/src/ui/text-field/text-field-tests-native.ios.ts
@@ -55,6 +55,15 @@ export function typeTextNatively(textField: textFieldModule.TextField, text: str
 	textField.ios.delegate.textFieldDidEndEditing(textField.ios);
 }
 
+/** One keystroke as UIKit delivers it: the delegate is asked first, and the field changes only if it agrees. */
+export function typeCharacterNatively(textField: textFieldModule.TextField, character: string): void {
+	const native: UITextField = textField.ios;
+	const range: NSRange = { location: native.text.length, length: 0 };
+	if (native.delegate.textFieldShouldChangeCharactersInRangeReplacementString(native, range, character)) {
+		native.text = NSString.stringWithString(native.text).stringByReplacingCharactersInRangeWithString(range, character);
+	}
+}
+
 export function typeTextNativelyWithReturn(textField: textFieldModule.TextField, text: string): void {
 	textField.nativeView.becomeFirstResponder();
 

diff --git a/apps/automated/src/ui/text-field/text-field-tests.ts b/apps/automated/src/ui/text-field/text-field-tests.ts
@@ -1,7 +1,7 @@
 import * as TKUnit from '../../tk-unit';
 import * as helper from '../../ui-helper';
-import { View, isIOS, StackLayout, Page, Color, Span, FormattedString, BindingOptions, Observable, TextField } from '@nativescript/core';
-import { getNativeText, getNativeHint, typeTextNatively, typeTextNativelyWithReturn, getNativeSecure, getNativeFontSize, getNativeColor, getNativeBackgroundColor, getNativeTextAlignment, getNativePlaceholderColor, getNativeFocus } from './text-field-tests-native';
+import { View, isIOS, StackLayout, Page, Color, Span, FormattedString, BindingOptions, Observable, PropertyChangeData, TextField } from '@nativescript/core';
+import { getNativeText, getNativeHint, typeTextNatively, typeCharacterNatively, typeTextNativelyWithReturn, getNativeSecure, getNativeFontSize, getNativeColor, getNativeBackgroundColor, getNativeTextAlignment, getNativePlaceholderColor, getNativeFocus } from './text-field-tests-native';
 
 // ### Binding two TextFields text property to observable view-model property.
 // >> binding-text-property-textfield
@@ -223,6 +223,27 @@ export var testTextIsUpdatedWhenUserTypes = function () {
 	});
 };
 
+export var testTextWrittenByTextChangeListenerIsNotRepeatedByTheKeystroke = function () {
+	// Android's TextWatcher reports after the edit is applied, so only the iOS
+	// delegate can apply a keystroke on top of what the listener wrote.
+	if (!isIOS) {
+		return;
+	}
+	helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<View>) {
+		var textField = <TextField>views[0];
+		textField.text = '';
+		textField.on('textChange', (args: PropertyChangeData) => {
+			textField.text = String(args.value).toUpperCase();
+		});
+
+		typeCharacterNatively(textField, 'a');
+		typeCharacterNatively(textField, 'b');
+
+		TKUnit.assertEqual(textField.text, 'AB', 'TextField text');
+		TKUnit.assertEqual(getNativeText(textField), 'AB', 'TextField native text');
+	});
+};
+
 export var testSetHint = function () {
 	helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<View>) {
 		var textField = <TextField>views[0];

diff --git a/packages/core/ui/text-field/index.ios.ts b/packages/core/ui/text-field/index.ios.ts
@@ -202,12 +202,20 @@ export class TextField extends TextFieldBase {
 				// 2. emoji's should not replace value
 				// 3. convenient keyboard shortcuts should not replace value (eg, '.com')
 				const shouldReplaceString = (textField.secureTextEntry && this._firstEdit) || (delta > 1 && !isEmoji(replacementString) && delta !== replacementString.length);
+				let typedText: string;
 				if (shouldReplaceString) {
-					textProperty.nativeValueChange(this, replacementString);
-				} else {
-					if (range.location <= textField.text.length) {
-						const newText = NSString.stringWithString(textField.text).stringByReplacingCharactersInRangeWithString(range, replacementString);
-						textProperty.nativeValueChange(this, newText);
+					typedText = replacementString;
+				} else if (range.location <= textField.text.length) {
+					typedText = NSString.stringWithString(textField.text).stringByReplacingCharactersInRangeWithString(range, replacementString);
+				}
+				if (typedText !== undefined) {
+					textProperty.nativeValueChange(this, typedText);
+					// A textChange listener that set a different `text` has already
+					// pushed it to the native field; letting UIKit apply the typed
+					// replacement on top of it would repeat the keystroke.
+					if (this.text !== typedText) {
+						this._firstEdit = false;
+						return false;
 					}
 				}
 			}