On the iPhone app not all customers or estimates are showing. Even when searched for. They do all show up on desktop.

Good morning, @pennellsmasonry.

Thanks for reaching out to the QuickBooks Community. I hope you're having a great day so far. 

Your app should definitely be showing all your data as the desktop. Since you're running into some issue, let's try resetting the data in your mobile app. As long as you’re connected to the internet, you should be able to update your data. 

Here’s how:

1. Go to Menu ☰ and tap Help & Feedback.
2. Tap Refresh Data.
    Note: A message appears “Caution. If there was a problem getting your latest QuickBooks Online data, you can refresh it now. It may take a few minutes.”
3. Tap Refresh to confirm.

Once done, you can close and reopen the mobile app and check for the missing data. If you continue to get the same result, uninstall and reinstall the application to start fresh. Follow the steps below to delete it.

1. Tap and hold QuickBooks Online on your phone.
2. Drag the app to the Uninstall section.
3. Select Yes to confirm.
 

That should do the trick. Please let me know if there is anything else I can assist you with. Take care!