All prints to my HP4155 printer refuses to print in any size other than 5x7

[Sta158]

The HP Smart Printer app is the worst I have ever used.  Terrible will never by another HP printer in my lifetime. 

First when I print from Google Docs some little yellow icon appears on the right side of the screen.  I didn't know I needed to click this to print.  Second the default is always 5x7 and must be manually changed to letter size otherwise is prints very 5x7 size.   I tried setting the ews small and medium setting but there is no letter size selection 

Very bad bad bad.....  never again going with this printer

[Max3Aj]

@Sta158, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
I'm really sorry you're dealing with this frustrating experience — that definitely shouldn't be how your printer behaves, and I don’t blame you at all for feeling fed up.Let’s walk through a few things to help fix the issue with the HP DeskJet 4155 only printing in 5x7, and hopefully get it working how you'd expect. Here's a breakdown of what might be going wrong and how to fix it:

✅ 1. Google Docs Printing Defaults to 5x7

That sounds like a default paper size issue either in:

• Google Docs print dialog
• Your printer settings on your computer or mobile device
• The HP Smart App or printer firmware

Fix:

• In Google Docs, go to File > Page setup and set the default paper size to Letter (8.5 x 11"), then click “Set as default”.
• When clicking that little yellow icon (it's part of the Chrome print preview or a browser extension), make sure the paper size is also set to Letter before clicking Print.

✅ 2. HP Smart App / Embedded Web Server (EWS) Paper Size

You're absolutely right — the EWS often doesn’t show a "Letter" option under some menus, only small/medium/large general types. But it doesn't control default print size directly unless you're using copy or scan functions.Fix:

• Go to the printer’s control panel (touchscreen or button combo) > Setup > Preferences > Paper Size and set it to Letter.
• Also check in the HP Smart app:
  • Open the app
  • Go to Print Settings (gear icon or Advanced settings)
  • Look under Default Print Settings and Paper/Media Size
  • Set Letter as the default there too.

✅ 3. Force Printer Driver to Use Letter

If you’re on Windows:

1. Open Control Panel > Devices and Printers.
2. Right-click on your HP 4155 > Printing Preferences.
3. Go to Paper/Quality or Advanced.
4. Set the Default Paper Size to Letter (8.5x11").
5. Click Apply > OK.

If on Mac:

1. Go to System Settings > Printers & Scanners > HP 4155 > Options & Supplies > Driver.
2. Make sure it’s using the right driver (not AirPrint, but "HP Smart Inkjet" or similar).
3. Then, under Default print settings, change to Letter.

Bonus Tip: Reset HP Smart Settings

If the app continues being a problem:

• Sign out and uninstall the HP Smart app.
• Reinstall it fresh from the Microsoft Store or App Store.
• Set the default paper size during the first setup.

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support