diff --git a/packages/app/src/components/git-diff-pane.tsx b/packages/app/src/components/git-diff-pane.tsx
index 86c66941d..5cb91eaa7 100644
--- a/packages/app/src/components/git-diff-pane.tsx
+++ b/packages/app/src/components/git-diff-pane.tsx
@@ -6,6 +6,7 @@ import {
   useRef,
   memo,
   type ReactElement,
+  type ReactNode,
   type RefObject,
 } from "react";
 import { useRouter } from "expo-router";
@@ -230,6 +231,40 @@ const EMPTY_COMMENTS: readonly ReviewDraftComment[] = [];
 
 function noopStartComment(): void {}
 
+const LONG_PRESS_COMMENT_DELAY_MS = 350;
+
+function LongPressableLine({
+  reviewTarget,
+  reviewActions,
+  style,
+  children,
+}: {
+  reviewTarget: ReviewableDiffTarget | null | undefined;
+  reviewActions: InlineReviewActions | undefined;
+  style: StyleProp<ViewStyle>;
+  children: ReactNode;
+}) {
+  const onStartComment = reviewActions?.onStartComment;
+  const handleLongPress = useCallback(() => {
+    if (reviewTarget && onStartComment) {
+      onStartComment(reviewTarget);
+    }
+  }, [reviewTarget, onStartComment]);
+
+  if (!isNative || !reviewTarget || !onStartComment) {
+    return <View style={style}>{children}</View>;
+  }
+  return (
+    <Pressable
+      onLongPress={handleLongPress}
+      delayLongPress={LONG_PRESS_COMMENT_DELAY_MS}
+      style={style}
+    >
+      {children}
+    </Pressable>
+  );
+}
+
 function lineTypeBackground(type: DiffLine["type"] | undefined | null) {
   if (!type) return styles.emptySplitCell;
   if (type === "add") return styles.addLineContainer;
@@ -280,7 +315,6 @@ function DiffGutterCell({
       reviewTarget={reviewTarget}
       comments={comments}
       isEditorOpen={isEditorOpen}
-      showPersistentAction={reviewActions?.showPersistentAction ?? false}
       onStartComment={onStartComment}
       style={containerStyle}
     >
@@ -291,7 +325,17 @@ function DiffGutterCell({
   );
 }
 
-function DiffTextLine({ line, wrapLines }: { line: DiffLine; wrapLines: boolean }) {
+function DiffTextLine({
+  line,
+  wrapLines,
+  reviewTarget,
+  reviewActions,
+}: {
+  line: DiffLine;
+  wrapLines: boolean;
+  reviewTarget?: ReviewableDiffTarget | null;
+  reviewActions?: InlineReviewActions;
+}) {
   const visibleTokens = hasVisibleDiffTokens(line.tokens) ? line.tokens : null;
 
   const containerStyle = useMemo(
@@ -311,22 +355,28 @@ function DiffTextLine({ line, wrapLines }: { line: DiffLine; wrapLines: boolean
   );
 
   return (
-    <View style={containerStyle}>
+    <LongPressableLine
+      reviewTarget={reviewTarget}
+      reviewActions={reviewActions}
+      style={containerStyle}
+    >
       {line.type !== "header" && visibleTokens ? (
         <HighlightedText tokens={visibleTokens} wrapLines={wrapLines} />
       ) : (
         <Text style={textStyle}>{formatDiffContentText(line.content)}</Text>
       )}
-    </View>
+    </LongPressableLine>
   );
 }
 
 function SplitTextLine({
   line,
   wrapLines,
+  reviewActions,
 }: {
   line: SplitDiffDisplayLine | null;
   wrapLines: boolean;
+  reviewActions?: InlineReviewActions;
 }) {
   const visibleTokens = line && hasVisibleDiffTokens(line.tokens) ? line.tokens : null;
 
@@ -347,13 +397,17 @@ function SplitTextLine({
   );
 
   return (
-    <View style={containerStyle}>
+    <LongPressableLine
+      reviewTarget={line?.reviewTarget}
+      reviewActions={reviewActions}
+      style={containerStyle}
+    >
       {visibleTokens ? (
         <HighlightedText tokens={visibleTokens} wrapLines={wrapLines} />
       ) : (
         <Text style={textStyle}>{formatDiffContentText(line?.content)}</Text>
       )}
-    </View>
+    </LongPressableLine>
   );
 }
 
@@ -391,7 +445,11 @@ function DiffLineView({
   );
 
   return (
-    <View style={containerStyle}>
+    <LongPressableLine
+      reviewTarget={reviewTarget}
+      reviewActions={reviewActions}
+      style={containerStyle}
+    >
       <DiffGutterCell
         lineNumber={lineNumber}
         type={line.type}
@@ -405,7 +463,7 @@ function DiffLineView({
       ) : (
         <Text style={textStyle}>{formatDiffContentText(line.content)}</Text>
       )}
-    </View>
+    </LongPressableLine>
   );
 }
 
@@ -439,7 +497,11 @@ function SplitDiffLine({
   );
 
   return (
-    <View style={containerStyle}>
+    <LongPressableLine
+      reviewTarget={line?.reviewTarget}
+      reviewActions={reviewActions}
+      style={containerStyle}
+    >
       <DiffGutterCell
         lineNumber={line?.lineNumber ?? null}
         type={line?.type}
@@ -453,7 +515,7 @@ function SplitDiffLine({
       ) : (
         <Text style={textStyle}>{formatDiffContentText(line?.content)}</Text>
       )}
-    </View>
+    </LongPressableLine>
   );
 }
 
@@ -686,7 +748,7 @@ function SplitDiffColumn({
             });
             return (
               <View key={key}>
-                <SplitTextLine line={line} wrapLines={false} />
+                <SplitTextLine line={line} wrapLines={false} reviewActions={reviewActions} />
                 <InlineReviewThreadContent
                   reviewTarget={line?.reviewTarget}
                   reviewActions={reviewActions}
@@ -931,7 +993,12 @@ function DiffFileBody({
               <View style={linesContainerRowStyle}>
                 {computedLines.map(({ line, key, reviewTarget }) => (
                   <View key={key}>
-                    <DiffTextLine line={line} wrapLines={false} />
+                    <DiffTextLine
+                      line={line}
+                      wrapLines={false}
+                      reviewTarget={reviewTarget}
+                      reviewActions={reviewActions}
+                    />
                     <InlineReviewThreadContent
                       reviewTarget={reviewTarget}
                       reviewActions={reviewActions}
@@ -1872,7 +1939,6 @@ export function GitDiffPane({
 
   const reviewActions = useInlineReviewController({
     reviewDraftKey,
-    showPersistentAction: isMobile,
   });
   const reviewAttachment = useReviewAttachmentSnapshot({
     key: reviewDraftKey,
diff --git a/packages/app/src/review/surface.test.tsx b/packages/app/src/review/surface.test.tsx
index 050209339..27623a2d8 100644
--- a/packages/app/src/review/surface.test.tsx
+++ b/packages/app/src/review/surface.test.tsx
@@ -130,12 +130,12 @@ function target(overrides: Partial<ReviewableDiffTarget> = {}): ReviewableDiffTa
 }
 
 const EMPTY_COMMENTS: ReviewDraftComment[] = [];
+const COMMENT_LIST: ReviewDraftComment[] = [comment()];
 
 function buildReviewActions(overrides: Partial<InlineReviewActions> = {}): InlineReviewActions {
   return {
     commentsByTarget: new Map(),
     editor: null,
-    showPersistentAction: false,
     onStartComment: vi.fn(),
     onEditComment: vi.fn(),
     onCancelEditor: vi.fn(),
@@ -173,13 +173,10 @@ describe("useInlineReviewController", () => {
     const firstKey = "review:key-1";
     const secondKey = "review:key-2";
     const { result, rerender } = renderHook(
-      ({ reviewDraftKey }) =>
-        useInlineReviewController({ reviewDraftKey, showPersistentAction: true }),
+      ({ reviewDraftKey }) => useInlineReviewController({ reviewDraftKey }),
       { initialProps: { reviewDraftKey: firstKey } },
     );
 
-    expect(result.current.showPersistentAction).toBe(true);
-
     act(() => result.current.onStartComment(reviewTarget));
     expect(result.current.editor).toEqual({ target: reviewTarget, commentId: null, body: "" });
 
@@ -243,16 +240,7 @@ describe("git diff inline review helpers", () => {
     expect(
       getInlineReviewThreadState({
         reviewTarget: target(),
-        reviewActions: {
-          commentsByTarget,
-          editor: null,
-          showPersistentAction: false,
-          onStartComment: vi.fn(),
-          onEditComment: vi.fn(),
-          onCancelEditor: vi.fn(),
-          onSaveEditor: vi.fn(),
-          onDeleteComment: vi.fn(),
-        },
+        reviewActions: buildReviewActions({ commentsByTarget }),
       })?.comments,
     ).toEqual([comments[0]]);
   });
@@ -261,16 +249,10 @@ describe("git diff inline review helpers", () => {
     const leftTarget = target({ side: "old", lineNumber: 8, oldLineNumber: 8 });
     const rightTarget = target();
     const rightComment = comment();
-    const actions: InlineReviewActions = {
+    const actions = buildReviewActions({
       commentsByTarget: groupInlineReviewCommentsByTarget([rightComment]),
       editor: { target: rightTarget, commentId: null, body: "" },
-      showPersistentAction: false,
-      onStartComment: vi.fn(),
-      onEditComment: vi.fn(),
-      onCancelEditor: vi.fn(),
-      onSaveEditor: vi.fn(),
-      onDeleteComment: vi.fn(),
-    };
+    });
 
     const rowState = getSplitInlineReviewThreadState({
       left: leftTarget,
@@ -292,7 +274,7 @@ describe("git diff inline review helpers", () => {
     ).toEqual([{ position: "sticky", left: 0 }, { width: 320 }]);
   });
 
-  it("keeps the gutter add-comment target accessible", () => {
+  it("keeps the gutter add-comment target accessible and clicking opens the editor", () => {
     const onStartComment = vi.fn();
     const reviewTarget = target();
     const { getByLabelText } = render(
@@ -300,7 +282,6 @@ describe("git diff inline review helpers", () => {
         reviewTarget={reviewTarget}
         comments={EMPTY_COMMENTS}
         isEditorOpen={false}
-        showPersistentAction={false}
         onStartComment={onStartComment}
       >
         <span>2</span>
@@ -312,14 +293,41 @@ describe("git diff inline review helpers", () => {
     expect(pressablePropsByLabel.get("Add review comment")?.hitSlop).toBe(SMALL_ACTION_HIT_SLOP);
   });
 
-  it("replaces the line number with the message icon in the same gutter cell", () => {
+  it("shows the line number by default and replaces it with the icon when comments exist or the editor is open", () => {
     const reviewTarget = target();
-    const { container, queryByText } = render(
+    const { container, queryByText, rerender } = render(
       <InlineReviewGutterCell
         reviewTarget={reviewTarget}
         comments={EMPTY_COMMENTS}
         isEditorOpen={false}
-        showPersistentAction
+        onStartComment={vi.fn()}
+      >
+        <span>2</span>
+      </InlineReviewGutterCell>,
+    );
+
+    expect(queryByText("2")).toBeTruthy();
+    expect(container.querySelector("[data-icon='MessageCircle']")).toBeNull();
+
+    rerender(
+      <InlineReviewGutterCell
+        reviewTarget={reviewTarget}
+        comments={COMMENT_LIST}
+        isEditorOpen={false}
+        onStartComment={vi.fn()}
+      >
+        <span>2</span>
+      </InlineReviewGutterCell>,
+    );
+
+    expect(queryByText("2")).toBeNull();
+    expect(container.querySelector("[data-icon='MessageCircle']")).toBeTruthy();
+
+    rerender(
+      <InlineReviewGutterCell
+        reviewTarget={reviewTarget}
+        comments={EMPTY_COMMENTS}
+        isEditorOpen
         onStartComment={vi.fn()}
       >
         <span>2</span>
diff --git a/packages/app/src/review/surface.tsx b/packages/app/src/review/surface.tsx
index 9522da890..674407de7 100644
--- a/packages/app/src/review/surface.tsx
+++ b/packages/app/src/review/surface.tsx
@@ -12,7 +12,7 @@ import {
   type ViewStyle,
 } from "react-native";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
-import { isNative, isWeb } from "@/constants/platform";
+import { isWeb } from "@/constants/platform";
 import { useReviewDraftComments, useReviewDraftStore, type ReviewDraftComment } from "./store";
 import { buildReviewableDiffTargetKey, type ReviewableDiffTarget } from "@/utils/diff-layout";
 
@@ -44,7 +44,6 @@ export interface InlineReviewEditorState {
 export interface InlineReviewActions {
   commentsByTarget: ReadonlyMap<string, ReviewDraftComment[]>;
   editor: InlineReviewEditorState | null;
-  showPersistentAction: boolean;
   onStartComment: (target: ReviewableDiffTarget) => void;
   onEditComment: (target: ReviewableDiffTarget, comment: ReviewDraftComment) => void;
   onCancelEditor: () => void;
@@ -63,10 +62,7 @@ export function groupInlineReviewCommentsByTarget(
   return grouped;
 }
 
-export function useInlineReviewController(input: {
-  reviewDraftKey: string;
-  showPersistentAction: boolean;
-}): InlineReviewActions {
+export function useInlineReviewController(input: { reviewDraftKey: string }): InlineReviewActions {
   const reviewComments = useReviewDraftComments(input.reviewDraftKey);
   const commentsByTarget = useMemo(
     () => groupInlineReviewCommentsByTarget(reviewComments),
@@ -137,7 +133,6 @@ export function useInlineReviewController(input: {
     () => ({
       commentsByTarget,
       editor,
-      showPersistentAction: input.showPersistentAction,
       onStartComment: handleStartComment,
       onEditComment: handleEditComment,
       onCancelEditor: handleCancelEditor,
@@ -152,7 +147,6 @@ export function useInlineReviewController(input: {
       handleEditComment,
       handleSaveEditor,
       handleStartComment,
-      input.showPersistentAction,
     ],
   );
 }
@@ -235,7 +229,6 @@ export function InlineReviewGutterCell({
   reviewTarget,
   comments,
   isEditorOpen,
-  showPersistentAction,
   onStartComment,
   style,
 }: {
@@ -243,7 +236,6 @@ export function InlineReviewGutterCell({
   reviewTarget: ReviewableDiffTarget | null | undefined;
   comments: readonly ReviewDraftComment[];
   isEditorOpen: boolean;
-  showPersistentAction: boolean;
   onStartComment: (target: ReviewableDiffTarget) => void;
   style?: StyleProp<ViewStyle>;
 }) {
@@ -280,9 +272,7 @@ export function InlineReviewGutterCell({
       style={pressableStyle}
     >
       {({ hovered, pressed }) => {
-        const showAction =
-          canComment &&
-          (hovered || pressed || isNative || showPersistentAction || hasComments || isEditorOpen);
+        const showAction = canComment && (hovered || pressed || hasComments || isEditorOpen);
         return (
           <View style={styles.gutterInner}>
             <View style={labelStyle}>