-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
- HP Community
- Printers
- Mobile Printing & Cloud Printing
- old printer

Create an account on the HP Community to personalize your profile and ask a question
06-25-2025 05:36 PM
I have an old HP Deskjet 3720, haven't used it in years im just wondering if it's not usable unless I have a laptop or the right cable to direct connect it to my phone? just trying to reset the password right now because I have no idea what it was. I've had it a long time
06-26-2025 02:36 PM
Hi @alix15
Welcome to the HP Support Community!
Thanks for posting your query! We're here to help you get back up and running.
If you have an old HP Deskjet 3720, you can still use it even if you don't have a laptop. You can connect it directly to your phone using the right cable or through wireless means. Here are some steps to regain access and reset the password:
Connecting the Printer to Your Phone
Direct Connection with Cable:
- Use an appropriate USB OTG (On-The-Go) cable to connect your phone to the printer. Ensure your phone supports OTG functionality.
Wireless Connection:
- Ensure the printer is powered on and within range of your Wi-Fi network.
- Use the HP Smart app, available on both Android and iOS. This app can help you set up and manage your printer:
- Download the HP Smart app from the Google Play Store or Apple App Store.
- Open the app and follow the instructions to add your printer. The app will help you connect to the printer wirelessly.
Resetting the Printer Password
If you need to reset the printer password for Wi-Fi, follow these steps:
Restore Network Settings:
- Press and hold the "Cancel" button and the "Wi-Fi" button on the printer for 3 seconds. This will restore the network defaults, removing the old password.
Reconfigure Wi-Fi Settings:
- Use the HP Smart app to set up the printer on your Wi-Fi network again. During this process, you can create a new password.
Using HP Smart App for Setup
- Set Up Printer:
- Open the HP Smart app on your phone.
- Click on Set Up a New Printer and follow the on-screen instructions.
- The app will guide you through connecting the printer to your Wi-Fi network and entering a new password if needed.
Embarking with these steps will allow you to reconnect and make your HP Deskjet 3720 fully functional again.
If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊
Take care, and have an amazing day!
Regards,
Hawks_Eye