Hi there.

I’m sorry to hear that your printer is rendering prints slowly and loudly, and that it’s using ink more rapidly than you’d anticipated. I can easily see why that combination would be tremendously frustrating, so I’ll offer some resources and information I hope will help.

First, I suggest you look at a guide on our support site that covers improving print speed; choose whichever of the two following links matches your operating system:
- Windows: support.hp.com/us-en/document/bud03409
- Mac OS: support.hp.com/us-en/document/c01928898

Here are some facts on ink use that might help you get more prints without too much extra effort:
- A high-density print (such as an image or graph) uses ink more quickly than a text-only document, particularly if the paper is highly absorbent and the environment is dry.
- Using the draft and black only settings on your printer can help save on ink, particularly the colors.
- Shutting the printer down between uses can result in some savings. However, always use the power button on the printer itself to turn it off. That will let the printer to 'park' so that the nozzles that spray the ink onto the paper are protected from excess drying.

If any problem persists, I suggest that you contact us directly at +1 800-474-6836 so we can help you assess the situation and guide you through any applicable troubleshooting. (Please note that because of restrictions on personal movement and workplace attendance associated with the COVID-19 pandemic, wait times for agents are longer than normal. Thanks in advance for your understanding.) To expedite the process, I recommend gathering the following information before the call:

- Model number
- Serial number
- Your location
- Case number (from any previous contact with HP support)

Keith
HP Care
hp.com/support

Hi there.

I’m sorry to hear that you’ve had such a frustrating experience with your printer. It’s easy to understand why your brand loyalty would be tested by the difficulty in setup and use you describe. This is doubly unfortunate give your personal connection to HP. With that in mind, I’ll offer some resources and information I hope will help.

First, you can access tutorials as well as user manuals, troubleshooting guides, how-to documents and software updates for your printer on our support site. Do that by following this link:
- support.hp.com/us-en/product/hp-envy-pro-6400-all-in-one-printer-series/29256678/model/29256679

You can also visit a page on our support site that has diagnostic tools for various tasks and issues, including setup and connectivity. There you can also find a general-purpose tool called the HP Print and Scan Doctor. If you use Windows, the tool will help identify and guide you through solutions to a wide range of common printing and scanning issues. You can find the page here:
- support.hp.com/us-en/topic/diagnostics

If you need further assistance – including a possible workaround to the smartphone dilemma you describe – I hope you’ll contact us directly at +1 800-474-6836 so we can help you assess the situation and guide you through any applicable troubleshooting. (Please note that because of restrictions on personal movement and workplace attendance associated with the COVID-19 pandemic, wait times for agents are longer than normal. Thanks in advance for your understanding.) To expedite the process, I recommend gathering the following information before the call:

- Model number
- Serial number
- Your location
- Case number (from any previous contact with HP support)

I'll also mention that HP printers have a one-year warranty from their purchase date that covers hardware as well as ink supplies, so if it comes to that, you might consider making use of it. You can verify the warranty using the following link: support.hp.com/us-en/checkwarranty

Keith
HP Care
hp.com/support