Step-by-Step Fix
1. Force-Close and Reopen the App
A suspended app session can hold expired tokens:
iOS:
- Swipe up from the bottom to open App Switcher (or double-press Home on older iPhones)
- Swipe the Claude app card up to close it
- Relaunch Claude from the home screen
Android:
- Go to Settings → Apps → Claude
- Tap Force Stop
- Return to the home screen and relaunch Claude
2. Update the App to the Latest Version
Outdated apps frequently have authentication issues as Anthropic updates its systems:
iOS: Open the App Store, tap your profile icon, scroll to find Claude, and tap Update if available.
Android: Open Google Play, search for Claude, and tap Update if shown.
After updating, force-close and relaunch the app.
3. Check Your Internet Connection
The login flow requires a stable connection:
- Toggle airplane mode on, wait 5 seconds, toggle it off
- Switch between Wi-Fi and mobile data
- Move to an area with better signal if you are on mobile data
4. Clear App Cache (Android)
On Android, cached data can cause login failures:
- Go to Settings → Apps (or Application Manager)
- Find and tap Claude
- Tap Storage
- Tap Clear Cache (do not tap Clear Data unless necessary, as this removes saved login)
- Relaunch the app
iOS does not have a direct cache-clear option — reinstalling achieves the same effect.
5. Check iOS Privacy Settings
On iOS 17+, Intelligent Tracking Prevention may block cookies needed for login:
- Go to Settings → Safari
- Scroll to Privacy & Security
- Ensure "Prevent Cross-Site Tracking" is enabled (this is normal), but also check that Claude's login is not being blocked by any content blockers in the Safari extensions
- If using an in-app browser for OAuth, try setting Safari as the default browser
6. Sign Out and Back In
If you are logged in but the app is stuck or not showing your account correctly:
- Tap the menu or your avatar in the Claude app
- Select Log out
- Close the app completely
- Reopen and sign in fresh
7. Try Email Login Instead of Google/Apple
OAuth login (Google/Apple) involves an external browser redirect that can fail in some mobile configurations:
- On the login screen, tap the email login option
- Enter your email address
- Check your email for the verification code
- Enter the code in the app
Email login is more direct and avoids the OAuth browser handshake.
8. Uninstall and Reinstall the App
If all else fails, a clean reinstall removes corrupted local data:
iOS: Press and hold the Claude app icon → Remove App → Delete App. Then reinstall from the App Store.
Android: Go to Settings → Apps → Claude → Uninstall. Reinstall from Google Play.
Why This Happens
Mobile apps handle authentication through a combination of the device's native auth capabilities and web-based OAuth flows. When the app's stored session token expires or the local database that holds session state becomes corrupted, the app cannot complete the login without a fresh session. Unlike browser-based sessions, mobile apps manage their own session storage independently, which is why clearing browser cookies does not fix mobile app login issues.
Common Mistakes to Avoid
- Clearing browser cookies and expecting the mobile app to be fixed — they use separate storage
- Not updating the app first — outdated app versions have stale auth code that frequently fails
- Using third-party Claude apps — these are unofficial and often have persistent authentication issues
- Giving up and creating a new account — this loses your history; the existing account is almost always recoverable
FAQ
Q: Why does the Claude mobile app keep logging me out automatically? Automatic logouts on mobile typically occur when the device's OS forces the app to clear memory while it runs in the background, which can corrupt the stored session token. iOS is especially aggressive about this on devices with limited storage. Keeping the app updated and ensuring your device has adequate free storage (at least 1–2 GB) reduces how often the OS forcibly clears app memory.
Q: The Claude app freezes on the loading screen on iOS — how do I fix it? Force close the app by swiping it away from the app switcher, then reopen it. If the loading screen freeze persists, toggle your network connection (switch between Wi-Fi and mobile data) to rule out a connectivity issue. If still frozen after multiple attempts, clearing the app's cache via Settings → General → iPhone Storage → Claude → Offload App, then reinstalling, resolves most persistent loading freezes.
Q: Can I use my Google account to log into the Claude mobile app? Yes. The Claude mobile app supports Google, Apple, and email login on both iOS and Android. Google sign-in launches a browser-based OAuth flow within the app. If the Google login flow gets stuck or returns you to the login screen, it is usually a permissions issue — the app needs permission to open external browser sessions. Check your device's privacy settings if Google login fails repeatedly.
Q: Does the Claude mobile app work the same as the desktop website? The mobile app provides access to all core Claude features including Projects, conversation history, and file uploads. Some interface elements are optimized for mobile screens, but the underlying functionality — including which Claude models are available and your usage limits — is identical to the web version. Your conversation history syncs across all platforms.
Q: Why can I log into claude.ai in my mobile browser but not in the app? The app and mobile browser use separate session storage and authentication flows. A working mobile browser login rules out account issues but does not fix app-specific problems. The most common cause of this discrepancy is an outdated app version that has a bug in its embedded auth handling. Update the app, then try logging in again. If the browser works but the app consistently fails, a reinstall is the next step.
Prevention Tips
- Enable automatic app updates for Claude on your device to ensure you always have the latest authentication code
- If you use the app on a device with limited storage (under 4 GB free), free up space before attempting login — low storage causes unpredictable app behavior
- Save the mobile browser URL (claude.ai) as a favorite — it works as a full fallback if the native app develops login issues
Additional FAQ
Q: What is the fastest way to diagnose a login problem? The fastest diagnostic is to open an incognito or private browser window and attempt to sign in there. Incognito windows run without extensions and use fresh cookies, which isolates the two most common causes: a browser extension interfering with authentication, or corrupted session cookies. If login works in incognito, the issue is your main browser profile. If it still fails, the problem is your network, your account, or a platform-side incident.