Hi! I see you’re having trouble logging into the USPS app on your iPhone. Let me help you out. To start, could you tell me if you’re receiving any specific error messages when you try to log in? Also, have you tried any steps so far, like resetting your password or restarting the app?

While you share that, here are some initial things we can check:

1. Make sure your iPhone’s date and time settings are correct. Sometimes, incorrect date/time causes login problems in apps.

2. Try closing the USPS app completely and then reopen it to refresh it.

3. If you can’t remember your password, use the “Forgot Password” option on the login screen to reset it via your email.

4. Check if you have the latest version of the USPS app installed from the App Store.

Once you let me know what you’ve tried or any error details, I can guide you step-by-step to a fix!

Tried it all can only do on a laptop log in

Thanks for letting me know you’ve already tried the basics and can only log in through your laptop. That’s a helpful clue. Since you’re on iOS 18.6.2 on an iPhone, and the app login fails while the laptop login works fine, it could be related to how the USPS app handles authentication or device recognition on mobile.

Here are some more targeted steps we can try:

1. Check Multifactor Authentication (MFA): Sometimes, USPS apps (like LiteBlue for employees, which might have similar login mechanisms) flag mobile devices as unknown. If the app is asking for MFA or showing messages about an unknown device/location, you may need to verify your device through the MFA prompt or settings in your USPS account on the laptop first.

2. Update the App: Double-check that you have the latest USPS app version installed from the App Store, as sometimes app updates fix login bugs with new iOS versions.

3. Reinstall the App: Delete the USPS app from your iPhone completely, then reinstall it fresh. This clears any corrupted cache inside the app.

4. Reset Network Settings: Sometimes iPhone’s network configurations cause app connectivity issues. On your iPhone, go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. (Note: This will erase saved Wi-Fi passwords.)

5. Check for iOS Updates: You mentioned iOS 18.6.2, which sounds correct, but just to be sure, check if any minor updates or patches are available.

6. Contact USPS Mobile Support: If these don’t help, you might be hitting a known app-side issue. You can email USPS mobile support at [email protected] for escalated help.

Based on similar cases reported by others, iPhone users sometimes face this when device or location verification fails on the app, but the website login works fine1 5.

Let me know if you see any error messages during the app login or if we should go through these steps together! Are you satisfied with this solution so far?