Can you delete customers from customers on tablet app if so how

Hi there, @aaabattens.

Thanks for sharing your concern in the QuickBooks Community page. 

The option to delete or inactivate a customer in QuickBooks Online Apps is unavailable. You'll have to log in to QuickBooks through a web browser and manually delete the customer from there. Here's how:

1. Go to Customers.
2. Click the customer's name to open their profile.
3. Select Edit.
4. Click Make inactive and Yes to confirm.

Once done, they will be hidden from your lists and menus. Even if a customer is inactive, all transactions associated with them stay on reports.

As your business grows, it's important to stay organised and keep track of your customers. You check out this article for additional reference in managing them:  Add and manage customers in QBO.

The Community always has your back, so please let me know if you have any other questions, aaabattens. I'll be more than happy to help. Keep safe.