diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index aab3a8bfd..6ce498d68 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed the modifyOtherKeys keyboard fallback enabling on unknown SSH terminals, avoiding broken Shift input in iOS SSH clients such as Redock ([#4325](https://github.com/can1357/oh-my-pi/issues/4325)).
+
 ## [16.3.0] - 2026-07-02
 
 ### Fixed
diff --git a/packages/tui/src/terminal.ts b/packages/tui/src/terminal.ts
index 9e0a5a753..f70b454a5 100644
--- a/packages/tui/src/terminal.ts
+++ b/packages/tui/src/terminal.ts
@@ -35,6 +35,11 @@ export function resolveHangulCompatibilityJamoWidthFromTerminalIdentity(
 	return "platform";
 }
 
+function shouldEnableModifyOtherKeysFallback(env: NodeJS.ProcessEnv = Bun.env): boolean {
+	if (!env.SSH_CONNECTION && !env.SSH_TTY && !env.SSH_CLIENT) return true;
+	return TERMINAL.id !== "base" && TERMINAL.id !== "trueColor";
+}
+
 /**
  * Maximum encoded UTF-8 bytes per `process.stdout.write` call on Windows.
  *
@@ -840,13 +845,13 @@ export class ProcessTerminal implements Terminal {
 						break;
 					}
 					case "keyboard": {
-						// Keyboard probe sentinel: kitty reply never arrived → fall back to modifyOtherKeys.
-						if (!this.#kittyProtocolActive && !this.#modifyOtherKeysActive && this.#modifyOtherKeysTimeout) {
+						// Keyboard probe sentinel: kitty reply never arrived → fall back to modifyOtherKeys
+						// only where the resolved terminal is known enough to tolerate it.
+						if (this.#modifyOtherKeysTimeout) {
 							clearTimeout(this.#modifyOtherKeysTimeout);
 							this.#modifyOtherKeysTimeout = undefined;
-							this.#safeWrite("\x1b[>4;2m");
-							this.#modifyOtherKeysActive = true;
 						}
+						this.#enableModifyOtherKeysFallback();
 						break;
 					}
 					case "osc99Probe": {
@@ -1054,6 +1059,13 @@ export class ProcessTerminal implements Terminal {
 		}
 	}
 
+	#enableModifyOtherKeysFallback(): void {
+		if (this.#kittyProtocolActive || this.#modifyOtherKeysActive) return;
+		if (!shouldEnableModifyOtherKeysFallback()) return;
+		this.#safeWrite("\x1b[>4;2m");
+		this.#modifyOtherKeysActive = true;
+	}
+
 	/**
 	 * Query terminal for Kitty keyboard protocol support and enable if available.
 	 *
@@ -1073,11 +1085,7 @@ export class ProcessTerminal implements Terminal {
 		this.#safeWrite("\x1b[?u\x1b[c");
 		this.#modifyOtherKeysTimeout = setTimeout(() => {
 			this.#modifyOtherKeysTimeout = undefined;
-			if (this.#kittyProtocolActive || this.#modifyOtherKeysActive) {
-				return;
-			}
-			this.#safeWrite("\x1b[>4;2m");
-			this.#modifyOtherKeysActive = true;
+			this.#enableModifyOtherKeysFallback();
 		}, 150);
 	}
 
diff --git a/packages/tui/test/kitty-keyboard-da1-ordering.test.ts b/packages/tui/test/kitty-keyboard-da1-ordering.test.ts
index 94b0a899d..f38a158c5 100644
--- a/packages/tui/test/kitty-keyboard-da1-ordering.test.ts
+++ b/packages/tui/test/kitty-keyboard-da1-ordering.test.ts
@@ -1,5 +1,6 @@
 import { afterEach, describe, expect, it } from "bun:test";
 import type { Component } from "@oh-my-pi/pi-tui";
+import { TERMINAL } from "@oh-my-pi/pi-tui/terminal-capabilities";
 import {
 	createProcessTerminalRenderHarness,
 	type ProcessTerminalRenderHarness,
@@ -18,12 +19,29 @@ class ModalProbe implements Component {
 		return ["modal"];
 	}
 }
+const originalSshConnection = Bun.env.SSH_CONNECTION;
+const originalSshTty = Bun.env.SSH_TTY;
+const originalSshClient = Bun.env.SSH_CLIENT;
+const originalTerminalId = TERMINAL.id;
+
+function restoreEnv(name: "SSH_CONNECTION" | "SSH_TTY" | "SSH_CLIENT", value: string | undefined): void {
+	if (value === undefined) {
+		delete Bun.env[name];
+		return;
+	}
+	Bun.env[name] = value;
+}
+
 describe("ProcessTerminal kitty keyboard progressive-enhancement ordering", () => {
 	let harness: ProcessTerminalRenderHarness | undefined;
 
 	afterEach(() => {
 		harness?.dispose();
 		harness = undefined;
+		restoreEnv("SSH_CONNECTION", originalSshConnection);
+		restoreEnv("SSH_TTY", originalSshTty);
+		restoreEnv("SSH_CLIENT", originalSshClient);
+		Object.defineProperty(TERMINAL, "id", { value: originalTerminalId, configurable: true });
 	});
 
 	it("enables kitty when the kitty reply arrives before the DA1 sentinel", async () => {
@@ -75,6 +93,23 @@ describe("ProcessTerminal kitty keyboard progressive-enhancement ordering", () =
 		expect(out).not.toContain("\x1b[>1u");
 	});
 
+	it("skips modifyOtherKeys fallback for SSH_CONNECTION-only unknown terminals", async () => {
+		Bun.env.SSH_CONNECTION = "192.0.2.10 54321 192.0.2.20 22";
+		delete Bun.env.SSH_TTY;
+		delete Bun.env.SSH_CLIENT;
+		Object.defineProperty(TERMINAL, "id", { value: "base", configurable: true });
+		harness = createProcessTerminalRenderHarness(100, 30);
+		await harness.settle();
+		harness.writes.length = 0;
+
+		await harness.feed("\x1b[?1;2c");
+
+		const out = harness.writes.join("");
+		expect(harness.terminal.kittyProtocolActive).toBe(false);
+		expect(out).not.toContain("\x1b[>4;2m");
+		expect(harness.terminal.keyboardEnhancementEnterSequence).toBeNull();
+	});
+
 	it("reasserts modifyOtherKeys fallback when fullscreen overlays enter the alternate screen", async () => {
 		harness = createProcessTerminalRenderHarness(100, 30);
 		await harness.settle();