diff --git a/UPGRADE-4.3.md b/UPGRADE-4.3.md
index 4eb383d46710..d9a1bcfa871a 100644
--- a/UPGRADE-4.3.md
+++ b/UPGRADE-4.3.md
@@ -13,6 +13,12 @@ Config
 
  * Deprecated using environment variables with `cannotBeEmpty()` if the value is validated with `validate()`
 
+Form
+----
+
+ * Using the `date_format`, `date_widget`, and `time_widget` options of the `DateTimeType` when the `widget` option is
+   set to `single_text` is deprecated.
+
 FrameworkBundle
 ---------------
 
diff --git a/UPGRADE-5.0.md b/UPGRADE-5.0.md
index f446a7c15a37..e036966d4b9d 100644
--- a/UPGRADE-5.0.md
+++ b/UPGRADE-5.0.md
@@ -76,6 +76,8 @@ Finder
 Form
 ----
 
+ * Using the `date_format`, `date_widget`, and `time_widget` options of the `DateTimeType` when the `widget` option is
+   set to `single_text` is not supported anymore.
  * The `getExtendedType()` method was removed from the `FormTypeExtensionInterface`. It is replaced by the the static
    `getExtendedTypes()` method which must return an iterable of extended types.
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
index fd1c319a6310..4c711b915784 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
@@ -1602,6 +1602,9 @@ public function testDateTimeWithWidgetSingleText()
         );
     }
 
+    /**
+     * @group legacy
+     */
     public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
diff --git a/src/Symfony/Component/Form/CHANGELOG.md b/src/Symfony/Component/Form/CHANGELOG.md
index 17c383909086..6b20f397ed74 100644
--- a/src/Symfony/Component/Form/CHANGELOG.md
+++ b/src/Symfony/Component/Form/CHANGELOG.md
@@ -4,6 +4,8 @@ CHANGELOG
 4.3.0
 -----
 
+ * deprecated using the `date_format`, `date_widget`, and `time_widget` options of the `DateTimeType` when the `widget`
+   option is set to `single_text`
  * added `block_prefix` option to `BaseType`.
 
 4.2.0
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php b/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
index 2f9f5c9a549c..4c0bdf203f06 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
@@ -216,12 +216,12 @@ public function configureOptions(OptionsResolver $resolver)
 
         // Defaults to the value of "widget"
         $dateWidget = function (Options $options) {
-            return $options['widget'];
+            return 'single_text' === $options['widget'] ? null : $options['widget'];
         };
 
         // Defaults to the value of "widget"
         $timeWidget = function (Options $options) {
-            return $options['widget'];
+            return 'single_text' === $options['widget'] ? null : $options['widget'];
         };
 
         $resolver->setDefaults([
@@ -292,6 +292,31 @@ public function configureOptions(OptionsResolver $resolver)
             'text',
             'choice',
         ]);
+
+        $resolver->setDeprecated('date_format', function (Options $options, $dateFormat) {
+            if (null !== $dateFormat && 'single_text' === $options['widget']) {
+                return sprintf('Using the "date_format" option of %s when the "widget" option is set to "single_text" is deprecated since Symfony 4.3 and will lead to an exception in 5.0.', self::class);
+                //throw new LogicException(sprintf('Cannot use the "date_format" option of the %s when the "widget" option is set to "single_text".', self::class));
+            }
+
+            return '';
+        });
+        $resolver->setDeprecated('date_widget', function (Options $options, $dateWidget) {
+            if (null !== $dateWidget && 'single_text' === $options['widget']) {
+                return sprintf('Using the "date_widget" option of %s when the "widget" option is set to "single_text" is deprecated since Symfony 4.3 and will lead to an exception in 5.0.', self::class);
+                //throw new LogicException(sprintf('Cannot use the "date_widget" option of the %s when the "widget" option is set to "single_text".', self::class));
+            }
+
+            return '';
+        });
+        $resolver->setDeprecated('time_widget', function (Options $options, $timeWidget) {
+            if (null !== $timeWidget && 'single_text' === $options['widget']) {
+                return sprintf('Using the "time_widget" option of %s when the "widget" option is set to "single_text" is deprecated since Symfony 4.3 and will lead to an exception in 5.0.', self::class);
+                //throw new LogicException(sprintf('Cannot use the "time_widget" option of the %s when the "widget" option is set to "single_text".', self::class));
+            }
+
+            return '';
+        });
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
index f8997d546e64..e4ed8bbfc5fa 100644
--- a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
@@ -1506,6 +1506,9 @@ public function testDateTimeWithWidgetSingleText()
         );
     }
 
+    /**
+     * @group legacy
+     */
     public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
diff --git a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
index 3f4f3b1bff09..99391245da97 100644
--- a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
@@ -45,7 +45,7 @@ public function testDebugDeprecatedDefaults()
 Built-in form types (Symfony\Component\Form\Extension\Core\Type)
 ----------------------------------------------------------------
 
- IntegerType, TimezoneType
+ DateTimeType, IntegerType, TimezoneType
 
 Service form types
 ------------------