Why has the "invoice" icon disappeared from my cell phone app? I can't create invoices on my cell now.

Let's perform some troubleshooting steps to get your Invoice icon to show in your QuickBooks Online (QBO) mobile app, aasimmonsplumbin.

The QuickBooks Online mobile app is always in sync with the web version. You should be able to access the view the Invoice icon by heading to the Quick Actions section and tapping the Menu option. To isolate the issue, let's start by 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 to do it on different mobile operating systems:

iOS

1. Go to Menu ☰ and tap Help & Feedback.
2. Tap Refresh Data.
3. 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.”
4. Tap Refresh to confirm.

Android

1. Go to Menu ☰ then tap More Options ⋮.
2. Tap Settings then Refresh Data.
3. Tap YES to confirm.

Once done, you can close and reopen the mobile app and check for the Invoice icon. Also, I'd suggest restarting your phone. 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. Press Yes to confirm.

Furthermore, I'm adding this helpful article as your reference for customizing your invoices: Customize invoices on the QuickBooks Online mobile app.

I've always got your back whenever you have other issues when doing tasks in the mobile app. Drop your reply anytime and I'll get back to you. Have a great day ahead.