diff --git a/src/components/shell/utils/mobileTerminalSelection.ts b/src/components/shell/utils/mobileTerminalSelection.ts
index f6be81ae..ef20e066 100644
--- a/src/components/shell/utils/mobileTerminalSelection.ts
+++ b/src/components/shell/utils/mobileTerminalSelection.ts
@@ -378,7 +378,7 @@ class ShellMobileSelectionCore implements MobileTerminalSelectionManager {
     this.recordScrollSample(touch);
   };
 
-  private onTerminalTouchEnd = (): void => {
+  private onTerminalTouchEnd = (event: TouchEvent): void => {
     if (this.isPinching) {
       this.endPinchZoom();
       return;
@@ -387,6 +387,15 @@ class ShellMobileSelectionCore implements MobileTerminalSelectionManager {
     this.clearTapHoldTimeout();
     this.touchStart = null;
 
+    // A long-press selection (or a tap dismissing one) must not let the browser
+    // synthesize the mouse click that refocuses xterm's hidden textarea — that
+    // is what pops up the mobile keyboard. A plain tap leaves isSelecting false
+    // and falls through, so it still focuses the terminal and shows the keyboard.
+    if (this.isSelecting || this.isHandleDragging) {
+      event.preventDefault();
+      this.blurTerminalInput();
+    }
+
     if (!this.pendingClearTouch) {
       this.maybeStartInertia();
       return;
@@ -508,6 +517,9 @@ class ShellMobileSelectionCore implements MobileTerminalSelectionManager {
     this.selectionEnd = wordBounds?.end ?? coords;
     this.isSelecting = true;
 
+    // Dismiss the mobile keyboard if it was open: selecting text is not typing.
+    this.blurTerminalInput();
+
     this.updateSelection();
     this.showHandles();
     this.showContextMenu();
@@ -976,6 +988,13 @@ class ShellMobileSelectionCore implements MobileTerminalSelectionManager {
     };
   }
 
+  private blurTerminalInput(): void {
+    const textarea = this.terminal.element?.querySelector<HTMLTextAreaElement>(
+      '.xterm-helper-textarea',
+    );
+    textarea?.blur();
+  }
+
   private getTerminalScreenElement(): HTMLElement | null {
     return (
       this.terminal.element?.querySelector<HTMLElement>('.xterm-screen') ??