diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 67b6dfe..08c3ceb 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -29,7 +29,7 @@ It assumes:
 - [x] Monorepo foundation scaffolded with root workspace config, shared runtime, shared product identity, local package linking, and verification scripts
 - [x] Backend migrated into `backend/` and passing typecheck, build, test, and backend verification gates
 - [x] Web migrated into `web/` with shared runtime, shared kill-switch gate, shared telemetry bootstrap, and normalized backend URL resolution
-- [x] Mobile migrated into `mobile/` with product identity, shared runtime bootstrap, launch-time kill-switch gate, transitional Supabase auth, and live backend polling plus websocket-backed updates
+- [x] Mobile migrated into `mobile/` with product identity, shared runtime bootstrap, launch-time kill-switch gate, transitional Supabase auth, live backend polling plus websocket-backed updates, and startup/error telemetry capture
 - [-] DRY cleanup completed for runtime/config/bootstrap concerns and shared Supabase bootstrap, but not yet for all auth/session internals
 - [!] Full common-platform auth replacement remains a follow-up for web and mobile; current implementation uses transitional Supabase-backed auth to stay compatible with the backend's current JWT boundary
 
@@ -306,7 +306,7 @@ Build mobile as a real ecosystem surface, not a mock UI shell.
 - [x] Implement auth flow and session restore
 - [-] Define secure storage and session invalidation behavior
 - [x] Implement launch-time kill-switch and maintenance handling
-- [ ] Add telemetry startup and error capture
+- [x] Add telemetry startup and error capture
 - [x] Define initial mobile scope
 - [x] Connect to backend and websocket/status contracts
 - [ ] Add push-notification-ready architecture
diff --git a/mobile/app/_layout.tsx b/mobile/app/_layout.tsx
index 4578262..e9bd2d5 100644
--- a/mobile/app/_layout.tsx
+++ b/mobile/app/_layout.tsx
@@ -1,6 +1,7 @@
 import { useEffect } from 'react';
 import { Stack } from 'expo-router';
 import { StatusBar } from 'expo-status-bar';
+import { AppState } from 'react-native';
 import { useFrameworkReady } from '@/hooks/useFrameworkReady';
 import { useFonts } from 'expo-font';
 import {
@@ -19,7 +20,9 @@ import {
 } from '@expo-google-fonts/jetbrains-mono';
 import * as SplashScreen from 'expo-splash-screen';
 import { ProductAvailabilityGate } from '@/components/ProductAvailabilityGate';
+import { getGlobalErrorUtils } from '@/lib/error-utils';
 import { createMobilePlatformSdk, mobileRuntime } from '@/lib/runtime';
+import { mobileTelemetry, trackMobileError } from '@/lib/telemetry';
 import { AuthGate } from '@/components/auth/AuthGate';
 import { MobileAuthProvider } from '@/providers/MobileAuthProvider';
 import { TradingDataProvider } from '@/providers/TradingDataProvider';
@@ -56,6 +59,47 @@ export default function RootLayout() {
     }
   }, [fontsLoaded, fontError]);
 
+  useEffect(() => {
+    mobileTelemetry.init();
+    mobileTelemetry.trackEvent('info', 'app_shell', 'trading_mobile_bootstrap', {
+      feature: 'bootstrap',
+      tags: { surface: 'mobile' },
+    });
+
+    const appStateSubscription = AppState.addEventListener('change', (nextState) => {
+      mobileTelemetry.trackEvent('info', 'app_lifecycle', 'app_state_changed', {
+        message: nextState,
+      });
+
+      if (nextState !== 'active') {
+        mobileTelemetry.flush();
+      }
+    });
+
+    const errorUtils = getGlobalErrorUtils();
+    const previousGlobalHandler = errorUtils?.getGlobalHandler?.();
+
+    errorUtils?.setGlobalHandler?.((error, isFatal) => {
+      trackMobileError('app_shell', isFatal ? 'unhandled_fatal_error' : 'unhandled_error', error, {
+        fatal: String(Boolean(isFatal)),
+      });
+      mobileTelemetry.flush();
+      previousGlobalHandler?.(error, isFatal);
+    });
+
+    return () => {
+      appStateSubscription.remove();
+      errorUtils?.setGlobalHandler?.(previousGlobalHandler ?? ((error) => console.error(error)));
+      mobileTelemetry.shutdown();
+    };
+  }, []);
+
+  useEffect(() => {
+    if (fontError) {
+      trackMobileError('app_shell', 'font_load_failed', fontError);
+    }
+  }, [fontError]);
+
   if (!fontsLoaded && !fontError) {
     return null;
   }
diff --git a/mobile/lib/error-utils.ts b/mobile/lib/error-utils.ts
new file mode 100644
index 0000000..e2baae2
--- /dev/null
+++ b/mobile/lib/error-utils.ts
@@ -0,0 +1,8 @@
+export interface GlobalErrorUtils {
+  getGlobalHandler?: () => (error: unknown, isFatal?: boolean) => void;
+  setGlobalHandler?: (handler: (error: unknown, isFatal?: boolean) => void) => void;
+}
+
+export function getGlobalErrorUtils(): GlobalErrorUtils | undefined {
+  return (globalThis as typeof globalThis & { ErrorUtils?: GlobalErrorUtils }).ErrorUtils;
+}
diff --git a/mobile/lib/telemetry.ts b/mobile/lib/telemetry.ts
new file mode 100644
index 0000000..78360e2
--- /dev/null
+++ b/mobile/lib/telemetry.ts
@@ -0,0 +1,20 @@
+import { createTelemetryClient } from '@bytelyst/telemetry-client';
+import { mobileRuntime } from '@/lib/runtime';
+import { productConfig } from '../../shared/product.js';
+
+export const mobileTelemetry = createTelemetryClient({
+  productId: mobileRuntime.productId,
+  baseUrl: mobileRuntime.platformApiUrl,
+  platform: 'mobile',
+  channel: 'invttrdg_mobile',
+  transport: 'fetch',
+  appVersion: productConfig.version,
+  releaseChannel: process.env.NODE_ENV === 'production' ? 'prod' : 'dev',
+});
+
+export function trackMobileError(module: string, eventName: string, error: unknown, tags?: Record<string, string>) {
+  mobileTelemetry.trackEvent('error', module, eventName, {
+    message: error instanceof Error ? error.message : String(error),
+    tags,
+  });
+}
diff --git a/mobile/package.json b/mobile/package.json
index 46053d0..15aed1c 100644
--- a/mobile/package.json
+++ b/mobile/package.json
@@ -12,6 +12,7 @@
   "dependencies": {
     "@bytelyst/kill-switch-client": "link:../../../learning_ai/learning_ai_common_plat/packages/kill-switch-client",
     "@bytelyst/react-native-platform-sdk": "link:../../../learning_ai/learning_ai_common_plat/packages/react-native-platform-sdk",
+    "@bytelyst/telemetry-client": "link:../../../learning_ai/learning_ai_common_plat/packages/telemetry-client",
     "@expo-google-fonts/inter": "^0.4.2",
     "@expo-google-fonts/jetbrains-mono": "^0.4.1",
     "@expo/vector-icons": "^15.0.2",
diff --git a/mobile/providers/MobileAuthProvider.tsx b/mobile/providers/MobileAuthProvider.tsx
index 35e0b12..c301a8d 100644
--- a/mobile/providers/MobileAuthProvider.tsx
+++ b/mobile/providers/MobileAuthProvider.tsx
@@ -3,6 +3,7 @@ import type { ReactNode } from 'react';
 import type { Session, User } from '@supabase/supabase-js';
 import { mobileSupabase } from '@/lib/supabase';
 import { tableNameUsers } from '@/lib/tables';
+import { mobileTelemetry, trackMobileError } from '@/lib/telemetry';
 
 export interface MobileUserProfile {
   user_id: string;
@@ -38,15 +39,24 @@ export function MobileAuthProvider({ children }: { children: ReactNode }) {
     let active = true;
 
     async function bootstrap() {
-      const { data } = await mobileSupabase.auth.getSession();
-      if (!active) {
-        return;
-      }
-      setSession(data.session ?? null);
-      setUser(data.session?.user ?? null);
-      if (data.session?.user) {
-        await fetchProfile(data.session.user.id);
-      } else {
+      try {
+        const { data } = await mobileSupabase.auth.getSession();
+        if (!active) {
+          return;
+        }
+        setSession(data.session ?? null);
+        setUser(data.session?.user ?? null);
+        if (data.session?.user) {
+          mobileTelemetry.trackEvent('info', 'auth', 'session_restored', {
+            userId: data.session.user.id,
+          });
+          await fetchProfile(data.session.user.id);
+        } else {
+          setLoading(false);
+        }
+      } catch (bootstrapError) {
+        trackMobileError('auth', 'session_restore_failed', bootstrapError);
+        setError(bootstrapError instanceof Error ? bootstrapError.message : 'Failed to restore session');
         setLoading(false);
       }
     }
@@ -57,6 +67,9 @@ export function MobileAuthProvider({ children }: { children: ReactNode }) {
       setSession(nextSession);
       setUser(nextSession?.user ?? null);
       if (nextSession?.user) {
+        mobileTelemetry.trackEvent('info', 'auth', 'session_changed', {
+          userId: nextSession.user.id,
+        });
         void fetchProfile(nextSession.user.id);
       } else {
         setProfile(null);
@@ -80,12 +93,14 @@ export function MobileAuthProvider({ children }: { children: ReactNode }) {
 
       if (profileError) {
         setError(profileError.message);
+        trackMobileError('auth', 'profile_load_failed', profileError, { userId });
       } else {
         setProfile((data || null) as MobileUserProfile | null);
         setError(null);
       }
     } catch (fetchError) {
       setError(fetchError instanceof Error ? fetchError.message : 'Failed to load profile');
+      trackMobileError('auth', 'profile_load_failed', fetchError, { userId });
     } finally {
       setLoading(false);
     }
@@ -97,15 +112,22 @@ export function MobileAuthProvider({ children }: { children: ReactNode }) {
     const { error: authError } = await mobileSupabase.auth.signInWithPassword({ email, password });
     if (authError) {
       setError(authError.message);
+      trackMobileError('auth', 'sign_in_failed', authError, { email });
       setLoading(false);
       return { error: authError.message };
     }
+    mobileTelemetry.trackEvent('info', 'auth', 'sign_in_succeeded', {
+      message: email,
+    });
     return {};
   }
 
   async function signOut() {
     setLoading(true);
     await mobileSupabase.auth.signOut();
+    mobileTelemetry.trackEvent('info', 'auth', 'sign_out_succeeded', {
+      userId: user?.id,
+    });
     setProfile(null);
     setSession(null);
     setUser(null);
diff --git a/mobile/providers/TradingDataProvider.tsx b/mobile/providers/TradingDataProvider.tsx
index e2561fd..148217f 100644
--- a/mobile/providers/TradingDataProvider.tsx
+++ b/mobile/providers/TradingDataProvider.tsx
@@ -2,6 +2,7 @@ import React, { createContext, useCallback, useContext, useEffect, useMemo, useS
 import type { ReactNode } from 'react';
 import { io, type Socket } from 'socket.io-client';
 import { mobileRuntime } from '@/lib/runtime';
+import { mobileTelemetry, trackMobileError } from '@/lib/telemetry';
 import { useMobileAuth } from '@/providers/MobileAuthProvider';
 
 type HealthSnapshot = {
@@ -169,6 +170,7 @@ export function TradingDataProvider({ children }: { children: ReactNode }) {
     } catch (fetchError) {
       setConnected(false);
       setError(fetchError instanceof Error ? fetchError.message : 'Failed to load trading state');
+      trackMobileError('trading_data', 'state_fetch_failed', fetchError);
     } finally {
       setLoading(false);
     }
@@ -208,14 +210,17 @@ export function TradingDataProvider({ children }: { children: ReactNode }) {
     socket.on('connect', () => {
       setConnected(true);
       setError(null);
+      mobileTelemetry.trackEvent('info', 'realtime', 'socket_connected');
     });
 
     socket.on('disconnect', () => {
       setConnected(false);
+      mobileTelemetry.trackEvent('warn', 'realtime', 'socket_disconnected');
     });
 
     socket.on('connect_error', (socketError) => {
       setError(socketError.message);
+      trackMobileError('realtime', 'socket_connect_failed', socketError);
     });
 
     socket.on('state', (nextState: BotState) => {
@@ -308,11 +313,19 @@ export function TradingDataProvider({ children }: { children: ReactNode }) {
 
         const body = await response.json().catch(() => ({} as { error?: string }));
         if (!response.ok) {
+          mobileTelemetry.trackEvent('warn', 'controls', 'trading_action_failed', {
+            message: body.error || `Request failed (${response.status})`,
+            tags: { path },
+          });
           return { error: body.error || `Request failed (${response.status})` };
         }
         await fetchState();
+        mobileTelemetry.trackEvent('info', 'controls', 'trading_action_succeeded', {
+          tags: { path },
+        });
         return {};
       } catch (actionError) {
+        trackMobileError('controls', 'trading_action_failed', actionError, { path });
         return { error: actionError instanceof Error ? actionError.message : 'Trading action failed' };
       }
     },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index aaf3079..a959adf 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -88,6 +88,9 @@ importers:
       '@bytelyst/react-native-platform-sdk':
         specifier: link:../../../learning_ai/learning_ai_common_plat/packages/react-native-platform-sdk
         version: link:../../../learning_ai/learning_ai_common_plat/packages/react-native-platform-sdk
+      '@bytelyst/telemetry-client':
+        specifier: link:../../../learning_ai/learning_ai_common_plat/packages/telemetry-client
+        version: link:../../../learning_ai/learning_ai_common_plat/packages/telemetry-client
       '@expo-google-fonts/inter':
         specifier: ^0.4.2
         version: 0.4.2