diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java
index ef30e780765..39e2b8283d4 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java	
@@ -14,7 +14,7 @@
 package org.eclipse.swt.graphics;
 
 import org.eclipse.swt.*;
-import org.eclipse.swt.internal.ExceptionStash;
+import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.cocoa.*;
 
 /**
@@ -244,7 +244,7 @@ public void dispose () {
 			}
 
 			destroy ();
-			disposed = true;			
+			disposed = true;
 			if (tracking) {
 				synchronized (trackingLock) {
 					printErrors ();
@@ -391,7 +391,18 @@ public int getDepth () {
  * @exception SWTException <ul>
  *    <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
  * </ul>
+ *
+ * @deprecated <p>This method returns a single global DPI value
+ * that does not reflect per-monitor DPI settings on modern operating systems.
+ * In environments with different scaling factors across monitors, it may provide
+ * a misleading or meaningless result, as it does not correspond to the actual DPI
+ * of any specific monitor.</p>
+ *
+ * <p>Note: While deprecated for general {@code Device} instances like {@code Display},
+ * this method may still be validly used when called on a {@code Printer} instance,
+ * where a single global DPI value is meaningful and expected.</p>
  */
+@Deprecated
 public Point getDPI () {
 	checkDevice ();
 	return getScreenDPI();
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Device.java
index 50996db4673..23ed27a6c87 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Device.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Device.java	
@@ -455,7 +455,18 @@ public int getDepth () {
  * @exception SWTException <ul>
  *    <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
  * </ul>
+ *
+ * @deprecated <p>This method returns a single global DPI value
+ * that does not reflect per-monitor DPI settings on modern operating systems.
+ * In environments with different scaling factors across monitors, it may provide
+ * a misleading or meaningless result, as it does not correspond to the actual DPI
+ * of any specific monitor.</p>
+ *
+ * <p>Note: While deprecated for general {@code Device} instances like {@code Display},
+ * this method may still be validly used when called on a {@code Printer} instance,
+ * where a single global DPI value is meaningful and expected.</p>
  */
+@Deprecated
 public Point getDPI () {
 	checkDevice ();
 	return getScreenDPI();
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java
index 887218f7c36..f929f6ab932 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java	
@@ -521,7 +521,18 @@ public int getDepth () {
  * @exception SWTException <ul>
  *    <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
  * </ul>
+ *
+ * @deprecated <p>This method returns a single global DPI value
+ * that does not reflect per-monitor DPI settings on modern operating systems.
+ * In environments with different scaling factors across monitors, it may provide
+ * a misleading or meaningless result, as it does not correspond to the actual DPI
+ * of any specific monitor.</p>
+ *
+ * <p>Note: While deprecated for general {@code Device} instances like {@code Display},
+ * this method may still be validly used when called on a {@code Printer} instance,
+ * where a single global DPI value is meaningful and expected.</p>
  */
+@Deprecated
 public Point getDPI () {
 	checkDevice ();
 	long hDC = internal_new_GC (null);
diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/imageanalyzer/ImageAnalyzer.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/imageanalyzer/ImageAnalyzer.java
index 5daa74431ee..504316ff6f5 100644
--- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/imageanalyzer/ImageAnalyzer.java
+++ b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/imageanalyzer/ImageAnalyzer.java
@@ -1165,6 +1165,7 @@ void menuPrint() {
 		if (image == null) return;
 
 		try {
+			final int DOTS_PER_INCH = 96;
 			// Ask the user to specify the printer.
 			PrintDialog dialog = new PrintDialog(shell, SWT.NONE);
 			if (printerData != null) dialog.setPrinterData(printerData);
@@ -1172,9 +1173,8 @@ void menuPrint() {
 			if (printerData == null) return;
 
 			Printer printer = new Printer(printerData);
-			Point screenDPI = display.getDPI();
 			Point printerDPI = printer.getDPI();
-			int scaleFactor = printerDPI.x / screenDPI.x;
+			int scaleFactor = printerDPI.x / DOTS_PER_INCH;
 			Rectangle trim = printer.computeTrim(0, 0, 0, 0);
 			if (printer.startJob(currentName)) {
 				if (printer.startPage()) {
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet361.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet361.java
index 56ef65dbeaa..3423008bc82 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet361.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet361.java
@@ -146,6 +146,7 @@ public void getName(AccessibleEvent e) {
 	}
 
 	private static void performPrintAction(final Display display, final Shell shell) {
+		final int DOTS_PER_INCH = 96;
 		Rectangle r = composite.getBounds();
 		Point p = shell.toDisplay(r.x, r.y);
 		org.eclipse.swt.graphics.Image snapshotImage
@@ -159,9 +160,8 @@ private static void performPrintAction(final Display display, final Shell shell)
 		data = dialog.open();
 		if (data != null) {
 			Printer printer = new Printer(data);
-			Point screenDPI = display.getDPI();
 			Point printerDPI = printer.getDPI();
-			int scaleFactor = printerDPI.x / screenDPI.x;
+			int scaleFactor = printerDPI.x / DOTS_PER_INCH;
 			Rectangle trim = printer.computeTrim(0, 0, 0, 0);
 			if (printer.startJob("Print Image")) {
 				ImageData imageData = snapshotImage.getImageData();
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet367.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet367.java
index 54b53dc1d39..8e5b7c2f7d7 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet367.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet367.java
@@ -185,7 +185,7 @@ public int getGcStyle() {
 
 		createSeparator(shell);
 
-		new Label (shell, SWT.NONE).setText ("5. 50x50 box\n(Display#getDPI(): " + display.getDPI().x + ")");
+		new Label (shell, SWT.NONE).setText ("5. 50x50 box");
 		Label box= new Label (shell, SWT.NONE);
 		box.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
 		box.setLayoutData (new GridData (50, 50));
diff --git a/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_widgets_Display.java b/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_widgets_Display.java
index c66d1ccc7c1..05fdb3a2444 100644
--- a/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_widgets_Display.java	
+++ b/tests/org.eclipse.swt.tests/JUnit Tests/org/eclipse/swt/tests/junit/Test_org_eclipse_swt_widgets_Display.java	
@@ -1573,6 +1573,7 @@ public void test_wake() {
 /* custom */
 boolean disposeExecRan;
 
+@SuppressWarnings("deprecation")
 @Test
 public void test_getDPI() {
 	Display display = new Display();