diff --git a/configure.pri b/configure.pri
index 1e8f93a41ea..df890a7c490 100644
--- a/configure.pri
+++ b/configure.pri
@@ -618,14 +618,8 @@ defineTest(qtConfOutput_prepareOptions) {
             target_arch = armeabi-v7a
 
         platform = $$eval(config.input.android-ndk-platform)
-        isEmpty(platform): equals(target_arch, arm64-v8a): \
-            platform = android-21
-
-        isEmpty(platform): equals(target_arch, x86_64): \
-            platform = android-21
-
         isEmpty(platform): \
-            platform = android-16  ### the windows configure disagrees ...
+            platform = android-21
 
         $${currentConfig}.output.devicePro += \
             "DEFAULT_ANDROID_SDK_ROOT = $$val_escape(sdk_root)" \
diff --git a/mkspecs/features/android/sdk.prf b/mkspecs/features/android/sdk.prf
index eee7ac2d5d3..fe7b9a27bd1 100644
--- a/mkspecs/features/android/sdk.prf
+++ b/mkspecs/features/android/sdk.prf
@@ -1,6 +1,6 @@
 API_VERSION_TO_USE = $$(ANDROID_API_VERSION)
 isEmpty(API_VERSION_TO_USE): API_VERSION_TO_USE = $$API_VERSION
-isEmpty(API_VERSION_TO_USE): API_VERSION_TO_USE = android-16
+isEmpty(API_VERSION_TO_USE): API_VERSION_TO_USE = android-21
 
 ANDROID_JAR_FILE = $$ANDROID_SDK_ROOT/platforms/$$API_VERSION_TO_USE/android.jar
 !exists($$ANDROID_JAR_FILE) {
diff --git a/src/android/jar/jar.pro b/src/android/jar/jar.pro
index bda15a0a007..ac6fc799688 100644
--- a/src/android/jar/jar.pro
+++ b/src/android/jar/jar.pro
@@ -2,7 +2,6 @@ TARGET = QtAndroid
 
 CONFIG += java
 DESTDIR = $$[QT_INSTALL_PREFIX/get]/jar
-API_VERSION = android-16
 
 PATHPREFIX = $$PWD/src/org/qtproject/qt5/android/
 
diff --git a/src/android/jar/src/org/qtproject/qt5/android/ExtractStyle.java b/src/android/jar/src/org/qtproject/qt5/android/ExtractStyle.java
index 3f74383a820..e6de354ac42 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/ExtractStyle.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/ExtractStyle.java
@@ -89,8 +89,6 @@ import android.view.inputmethod.EditorInfo;
 
 public class ExtractStyle {
 
-    native static int[] extractChunkInfo(byte[] chunkData);
-    native static int[] extractNativeChunkInfo(int nativeChunk);
     native static int[] extractChunkInfo20(byte[] chunkData);
     native static int[] extractNativeChunkInfo20(long nativeChunk);
 
@@ -345,10 +343,7 @@ public class ExtractStyle {
         }
 
         public void drawPatch(Bitmap bmp, byte[] chunks, RectF dst, Paint paint) {
-            if (Build.VERSION.SDK_INT > 19)
-                chunkData = extractChunkInfo20(chunks);
-            else
-                chunkData = extractChunkInfo(chunks);
+            chunkData = extractChunkInfo20(chunks);
         }
     }
 
@@ -698,10 +693,6 @@ public class ExtractStyle {
             json.put("thicknessRatio",gradientStateClass.getField("mThicknessRatio").getFloat(obj));
             json.put("innerRadius",gradientStateClass.getField("mInnerRadius").getInt(obj));
             json.put("thickness",gradientStateClass.getField("mThickness").getInt(obj));
-            if (Build.VERSION.SDK_INT < 20) {
-                json.put("solidColor",gradientStateClass.getField("mSolidColor").getInt(obj));
-                json.put("strokeColor",gradientStateClass.getField("mStrokeColor").getInt(obj));
-            }
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -802,14 +793,7 @@ public class ExtractStyle {
             Object state = getAccessibleField(NinePatchDrawable.class, "mNinePatchState").get(d);
             np = (NinePatch) getAccessibleField(state.getClass(), "mNinePatch").get(state);
         }
-        if (Build.VERSION.SDK_INT < 19)
-            return getJsonChunkInfo(extractChunkInfo((byte[]) getAccessibleField(np.getClass(), "mChunk").get(np)));
-        else
-        {
-            if (Build.VERSION.SDK_INT > 19)
-                return getJsonChunkInfo(extractNativeChunkInfo20(getAccessibleField(np.getClass(), "mNativeChunk").getLong(np)));
-            return getJsonChunkInfo(extractNativeChunkInfo(getAccessibleField(np.getClass(), "mNativeChunk").getInt(np)));
-        }
+        return getJsonChunkInfo(extractNativeChunkInfo20(getAccessibleField(np.getClass(), "mNativeChunk").getLong(np)));
     }
 
     class DrawableCache
@@ -1016,16 +1000,12 @@ public class ExtractStyle {
                     json.put("gravity", bitmapDrawable.getGravity());
                     json.put("tileModeX", bitmapDrawable.getTileModeX());
                     json.put("tileModeY", bitmapDrawable.getTileModeY());
-                    if (Build.VERSION.SDK_INT >= 18) {
-                        json.put("antialias", (Boolean) BitmapDrawable.class.getMethod("hasAntiAlias").invoke(bitmapDrawable));
-                        json.put("mipMap", (Boolean) BitmapDrawable.class.getMethod("hasMipMap").invoke(bitmapDrawable));
-                    }
-                    if (Build.VERSION.SDK_INT >= 21) {
-                        json.put("tintMode", (PorterDuff.Mode) BitmapDrawable.class.getMethod("getTintMode").invoke(bitmapDrawable));
-                        ColorStateList tintList = (ColorStateList) BitmapDrawable.class.getMethod("getTint").invoke(bitmapDrawable);
-                        if (tintList != null)
-                            json.put("tintList", getColorStateList(tintList));
-                    }
+                    json.put("antialias", (Boolean) BitmapDrawable.class.getMethod("hasAntiAlias").invoke(bitmapDrawable));
+                    json.put("mipMap", (Boolean) BitmapDrawable.class.getMethod("hasMipMap").invoke(bitmapDrawable));
+                    json.put("tintMode", (PorterDuff.Mode) BitmapDrawable.class.getMethod("getTintMode").invoke(bitmapDrawable));
+                    ColorStateList tintList = (ColorStateList) BitmapDrawable.class.getMethod("getTint").invoke(bitmapDrawable);
+                    if (tintList != null)
+                        json.put("tintList", getColorStateList(tintList));
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
@@ -1758,10 +1738,8 @@ public class ExtractStyle {
             json.put("Switch_switchPadding", a.getDimensionPixelSize(getField(styleableClass, "Switch_switchPadding"), 0));
             json.put("Switch_thumbTextPadding", a.getDimensionPixelSize(getField(styleableClass, "Switch_thumbTextPadding"), 0));
 
-            if (Build.VERSION.SDK_INT >= 21) {
-                json.put("Switch_showText", a.getBoolean(getField(styleableClass, "Switch_showText"), true));
-                json.put("Switch_splitTrack", a.getBoolean(getField(styleableClass, "Switch_splitTrack"), false));
-            }
+            json.put("Switch_showText", a.getBoolean(getField(styleableClass, "Switch_showText"), true));
+            json.put("Switch_splitTrack", a.getBoolean(getField(styleableClass, "Switch_splitTrack"), false));
 
             a.recycle();
             jsonWriter.name(styleName).value(json);
diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java b/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
index 02033859e90..4485ed63388 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
@@ -161,15 +161,13 @@ public class QtActivityDelegate
             m_activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
             m_activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
             try {
-                if (Build.VERSION.SDK_INT >= 19) {
-                    int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
-                    flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
-                    flags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
-                    flags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
-                    flags |= View.SYSTEM_UI_FLAG_FULLSCREEN;
-                    flags |= View.class.getDeclaredField("SYSTEM_UI_FLAG_IMMERSIVE_STICKY").getInt(null);
-                    m_activity.getWindow().getDecorView().setSystemUiVisibility(flags | View.INVISIBLE);
-                }
+                int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+                flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
+                flags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
+                flags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
+                flags |= View.SYSTEM_UI_FLAG_FULLSCREEN;
+                flags |= View.class.getDeclaredField("SYSTEM_UI_FLAG_IMMERSIVE_STICKY").getInt(null);
+                m_activity.getWindow().getDecorView().setSystemUiVisibility(flags | View.INVISIBLE);
             } catch (Exception e) {
                 e.printStackTrace();
             }
diff --git a/src/android/java/src/org/qtproject/qt5/android/bindings/QtActivityLoader.java b/src/android/java/src/org/qtproject/qt5/android/bindings/QtActivityLoader.java
index 759daf4393b..6beb5e31616 100644
--- a/src/android/java/src/org/qtproject/qt5/android/bindings/QtActivityLoader.java
+++ b/src/android/java/src/org/qtproject/qt5/android/bindings/QtActivityLoader.java
@@ -132,7 +132,7 @@ public class QtActivityLoader extends QtLoader {
             return;
         }
 
-        if (Build.VERSION.SDK_INT < 16) {
+        if (Build.VERSION.SDK_INT < 21) {
             // fatal error, show the error and quit
             AlertDialog errorDialog = new AlertDialog.Builder(m_activity).create();
             if (m_contextInfo.metaData.containsKey("android.app.unsupported_android_version"))
diff --git a/src/android/templates/AndroidManifest.xml b/src/android/templates/AndroidManifest.xml
index 966ce23b14b..67a4a429f66 100644
--- a/src/android/templates/AndroidManifest.xml
+++ b/src/android/templates/AndroidManifest.xml
@@ -70,7 +70,7 @@
 
     </application>
 
-    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="28"/>
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="28"/>
     <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>
 
     <!-- The following comment will be replaced upon deployment with default permissions based on the dependencies of the application.
diff --git a/src/corelib/io/qstandardpaths_android.cpp b/src/corelib/io/qstandardpaths_android.cpp
index 0667d170c71..83108e43878 100644
--- a/src/corelib/io/qstandardpaths_android.cpp
+++ b/src/corelib/io/qstandardpaths_android.cpp
@@ -239,10 +239,7 @@ QString QStandardPaths::writableLocation(StandardLocation type)
     case QStandardPaths::PicturesLocation:
         return getExternalStoragePublicDirectory("DIRECTORY_PICTURES");
     case QStandardPaths::DocumentsLocation:
-        if (QtAndroidPrivate::androidSdkVersion() > 18)
-            return getExternalStoragePublicDirectory("DIRECTORY_DOCUMENTS");
-        else
-            return getExternalStorageDirectory() + QLatin1String("/Documents");
+        return getExternalStoragePublicDirectory("DIRECTORY_DOCUMENTS");
     case QStandardPaths::DownloadLocation:
         return getExternalStoragePublicDirectory("DIRECTORY_DOWNLOADS");
     case QStandardPaths::GenericConfigLocation:
@@ -295,13 +292,8 @@ QStringList QStandardPaths::standardLocations(StandardLocation type)
     }
 
     if (type == DocumentsLocation) {
-        if (QtAndroidPrivate::androidSdkVersion() > 18) {
-            return QStringList() << writableLocation(type)
-                                 << getExternalFilesDir("DIRECTORY_DOCUMENTS");
-        } else {
-            return QStringList() << writableLocation(type)
-                                 << getExternalFilesDir() + QLatin1String("/Documents");
-        }
+        return QStringList() << writableLocation(type)
+                             << getExternalFilesDir("DIRECTORY_DOCUMENTS");
     }
 
     if (type == DownloadLocation) {
diff --git a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp
index 9d8bf07af84..c0e528f922a 100644
--- a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp
+++ b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp
@@ -332,14 +332,6 @@ void QEGLPlatformContext::updateFormatFromGL()
                 QByteArray version = QByteArray(reinterpret_cast<const char *>(s));
                 int major, minor;
                 if (QPlatformOpenGLContext::parseOpenGLVersion(version, major, minor)) {
-#if defined(Q_OS_ANDROID) && !defined(Q_OS_ANDROID_EMBEDDED)
-                    // Some Android 4.2.2 devices report OpenGL ES 3.0 without the functions being available.
-                    static int apiLevel = QtAndroidPrivate::androidSdkVersion();
-                    if (apiLevel <= 17 && major >= 3) {
-                        major = 2;
-                        minor = 0;
-                    }
-#endif
                     m_format.setMajorVersion(major);
                     m_format.setMinorVersion(minor);
                 }
diff --git a/src/plugins/platforms/android/androidjniaccessibility.cpp b/src/plugins/platforms/android/androidjniaccessibility.cpp
index 309e41bfd6f..d4b7f38bf6f 100644
--- a/src/plugins/platforms/android/androidjniaccessibility.cpp
+++ b/src/plugins/platforms/android/androidjniaccessibility.cpp
@@ -329,10 +329,7 @@ if (!clazz) { \
         GET_AND_CHECK_STATIC_METHOD(m_setFocusedMethodID, nodeInfoClass, "setFocused", "(Z)V");
         GET_AND_CHECK_STATIC_METHOD(m_setScrollableMethodID, nodeInfoClass, "setScrollable", "(Z)V");
         GET_AND_CHECK_STATIC_METHOD(m_setVisibleToUserMethodID, nodeInfoClass, "setVisibleToUser", "(Z)V");
-
-        if (QtAndroidPrivate::androidSdkVersion() >= 18) {
-            GET_AND_CHECK_STATIC_METHOD(m_setTextSelectionMethodID, nodeInfoClass, "setTextSelection", "(II)V");
-        }
+        GET_AND_CHECK_STATIC_METHOD(m_setTextSelectionMethodID, nodeInfoClass, "setTextSelection", "(II)V");
 
         return true;
     }
diff --git a/src/plugins/platforms/android/extract-dummy.cpp b/src/plugins/platforms/android/extract-dummy.cpp
index d07fbe1ba71..fdce8ec64c9 100644
--- a/src/plugins/platforms/android/extract-dummy.cpp
+++ b/src/plugins/platforms/android/extract-dummy.cpp
@@ -40,16 +40,6 @@
 #include <jni.h>
 #include <extract.h>
 
-extern "C" JNIEXPORT jintArray JNICALL Java_org_qtproject_qt5_android_ExtractStyle_extractNativeChunkInfo(JNIEnv *, jobject, Res_png_9patch*)
-{
-    return 0;
-}
-
-extern "C" JNIEXPORT jintArray JNICALL Java_org_qtproject_qt5_android_ExtractStyle_extractChunkInfo(JNIEnv *, jobject, jbyteArray)
-{
-        return 0;
-}
-
 extern "C" JNIEXPORT jintArray JNICALL Java_org_qtproject_qt5_android_ExtractStyle_extractNativeChunkInfo20(JNIEnv *, jobject, long)
 {
     return 0;
diff --git a/src/plugins/platforms/android/extract.cpp b/src/plugins/platforms/android/extract.cpp
index 2f2ffa71260..acffa353f18 100644
--- a/src/plugins/platforms/android/extract.cpp
+++ b/src/plugins/platforms/android/extract.cpp
@@ -48,46 +48,6 @@
 #define LOG_TAG    "extractSyleInfo"
 #define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
 
-extern "C" JNIEXPORT jintArray JNICALL Java_org_qtproject_qt5_android_ExtractStyle_extractNativeChunkInfo(JNIEnv * env, jobject, Res_png_9patch* chunk)
-{
-        Res_png_9patch::deserialize(chunk);
-        //printChunkInformation(chunk);
-        jintArray result;
-        size_t size = 3+chunk->numXDivs+chunk->numYDivs+chunk->numColors;
-        result = env->NewIntArray(size);
-        if (!result)
-            return 0;
-
-        jint *data = (jint*)malloc(sizeof(jint)*size);
-        size_t pos = 0;
-        data[pos++]=chunk->numXDivs;
-        data[pos++]=chunk->numYDivs;
-        data[pos++]=chunk->numColors;
-        for (int x = 0; x <chunk->numXDivs; x ++)
-            data[pos++]=chunk->xDivs[x];
-        for (int y = 0; y <chunk->numYDivs; y ++)
-            data[pos++]=chunk->yDivs[y];
-        for (int c = 0; c <chunk->numColors; c ++)
-            data[pos++]=chunk->colors[c];
-        env->SetIntArrayRegion(result, 0, size, data);
-        free(data);
-        return result;
-}
-
-extern "C" JNIEXPORT jintArray JNICALL Java_org_qtproject_qt5_android_ExtractStyle_extractChunkInfo(JNIEnv * env, jobject  obj, jbyteArray chunkObj)
-{
-        size_t chunkSize = env->GetArrayLength(chunkObj);
-        void* storage = alloca(chunkSize);
-        env->GetByteArrayRegion(chunkObj, 0, chunkSize,
-                                reinterpret_cast<jbyte*>(storage));
-
-        if (!env->ExceptionCheck())
-            return Java_org_qtproject_qt5_android_ExtractStyle_extractNativeChunkInfo(env, obj, static_cast<Res_png_9patch*>(storage));
-        else
-            env->ExceptionClear();
-        return 0;
-}
-
 // The following part was shamelessly stolen from ResourceTypes.cpp from Android's sources
 /*
  * Copyright (C) 2005 The Android Open Source Project
diff --git a/src/tools/androiddeployqt/main.cpp b/src/tools/androiddeployqt/main.cpp
index af3a3ae39a9..5db8b6e2f61 100644
--- a/src/tools/androiddeployqt/main.cpp
+++ b/src/tools/androiddeployqt/main.cpp
@@ -1369,8 +1369,8 @@ bool updateAndroidManifest(Options &options)
                     options.packageName = reader.attributes().value(QLatin1String("package")).toString();
                 } else if (reader.name() == QLatin1String("uses-sdk")) {
                     if (reader.attributes().hasAttribute(QLatin1String("android:minSdkVersion")))
-                        if (reader.attributes().value(QLatin1String("android:minSdkVersion")).toInt() < 16) {
-                            fprintf(stderr, "Invalid minSdkVersion version, minSdkVersion must be >= 16\n");
+                        if (reader.attributes().value(QLatin1String("android:minSdkVersion")).toInt() < 21) {
+                            fprintf(stderr, "Invalid minSdkVersion version, minSdkVersion must be >= 21\n");
                             return false;
                         }
                 } else if ((reader.name() == QLatin1String("application") ||