Hi there! I see you're having trouble with the myBuick app on your iPhone—after you tap "Sign In," it just shows a blank screen. Let’s figure this out together.

To start, can you tell me:
- Have you tried closing and reopening the app?
- Did you update the myBuick app to the latest version?
- Have you restarted your iPhone since installing the app?
- Does this happen consistently or just once in a while?

Meanwhile, here’s a simple step-by-step you can try right now:

1. Force close the app — Swipe up from the bottom of the screen (or double-click the Home button if your iPhone has one) to show the app switcher, then swipe the myBuick app off the screen to close it completely.

2. Reopen the app.

3. If still blank, restart your iPhone — Press and hold the side button and either volume button until the slider appears, then slide to power off. Turn it back on after a minute.

4. Check for app update — Go to the App Store, tap your profile icon, and scroll to see if there's an update available for myBuick. Update if needed.

5. If the problem persists, try uninstalling and reinstalling the app.

If after these steps, you still get a blank screen when signing in, it could be related to your account or a server issue on the app's side. Sometimes, turning your vehicle's ignition on for a couple of minutes before using the app helps sync the connection.

Also, as a last resort, you could reach out to OnStar support at (877) 558-8352 or press your vehicle’s blue OnStar button for live help.

Would you like me to guide you through these steps in more detail, or have you already tried some of them? Let me know!

I have tried updating the app off Loading the app reinstalling and I get the same issue

Thanks for sharing that you've already updated, offloaded, and reinstalled the app. That helps narrow things down.

Since you’re still getting a blank screen after tapping “Sign In,” and the basic fixes didn’t work, let's try a few deeper steps based on official myBuick troubleshooting guidance:

1. Check your iPhone's iOS version:
Make sure your iPhone is fully updated. You mentioned iOS 16.3.1 — if there is a minor update or security patch available, install that via Settings > General > Software Update.

2. Clear Safari cache:
Sometimes the app uses internal web views for login screens, and cached data can cause issues. To clear Safari's cache:
- Go to Settings > Safari
- Tap Clear History and Website Data (this won’t delete saved passwords)

3. Disable VPN or Proxy if enabled:
If you are using a VPN or any proxy on your iPhone, try turning it off temporarily, as it might interfere with authentication.

4. Check network connection:
Make sure your iPhone has a strong internet connection via Wi-Fi or cellular data. Sometimes switching from one to the other helps.

5. Login from a different device:
If possible, try signing into your myBuick account from a desktop browser at myBuick website to confirm your credentials are active and working.

6. Contact OnStar support for account verification:
Sometimes, login issues with the app relate to backend account status. You can call OnStar support at 877-558-8352 or chat with them via the app's support section to verify your account is active and linked properly.

7. Check for any known app outages:
There have been reports of similar login and update issues lately. You can visit Buick’s official troubleshooting page here: https://www.buick.com/support/vehicle/smartphone-connections/mybuick-mobile-app/troubleshooting for any notices or updates1.

If after these you still face the blank screen, the issue may be related to a backend service glitch that requires assistance from myBuick support.

Would you like me to assist you step-by-step with clearing the Safari cache or checking network settings? Or would you prefer help reaching OnStar support?

Are you satisfied with the solution I provided so far?