To connect your **HP DeskJet Plus 4155 printer to Wi-Fi**, you can use one of these common methods:
### Method 1: Connect via WPS (Wi-Fi Protected Setup)
1. **Turn on your printer** and place it near your Wi-Fi router.
2. **Press and hold the Wi-Fi button** on the printer’s control panel to put it in Wi-Fi setup mode.
3. Within 2 minutes, **press the WPS button on your router**.
4. Wait for the wireless light on the printer to stop blinking and glow solid, indicating a successful connection.
5. Download and install the **HP Smart app** on your computer or smartphone.
6. Open the app, sign in or create an account, and **add your printer** through the app.
This method completes the Wi-Fi setup and makes your printer ready to print wirelessly[1][4].
### Method 2: Connect via Wi-Fi Direct (if you don’t want to use the router)
1. On the printer’s touchscreen or control panel, **enable Wi-Fi Direct**.
2. Print a **Wi-Fi Direct password page** by pressing the “i” button (Information button) on the printer.
3. On your smartphone or computer, go to Wi-Fi settings and look for the network name starting with **”DIRECT-HP”**.
4. Connect to this network using the password printed on your sheet.
This method lets you connect directly to the printer without using a Wi-Fi router, useful if your main Wi-Fi isn’t working or available[1][3].
### Troubleshooting tips if connection fails:
– Restart both your printer and router.
– Make sure the printer’s wireless light is on and stable.
– Verify Wi-Fi credentials are correct.
– If the printer loses connection repeatedly, ISP-related blocking or network issues may be involved as reported by some users[2][5].
– Reset the printer’s wireless settings by pressing and holding the Cancel and Wireless buttons simultaneously for about 3 seconds, then try reconnecting[5].
By following these instructions, you should be able to connect your HP DeskJet Plus 4155 to Wi-Fi successfully.