If your iPhone is not printing, especially using AirPrint, here are the key troubleshooting steps you should follow:

– **Check network connection:** Ensure your iPhone and the printer are connected to the *same Wi-Fi network*. Both devices must be on the same local wireless network for AirPrint to work properly[3][4].

– **Restart devices:** Power off your iPhone, printer, and Wi-Fi router. Wait about 15 seconds, then power them back on in this order: router, iPhone, printer. This refreshes the network, which often resolves connectivity issues[2][4].

– **Force restart your iPhone:** On newer iPhones, press and release the volume up button, then volume down, then hold the side button until the screen goes completely black and restarts. This can fix minor glitches related to printing[1].

– **Check printer Wi-Fi connection:** Sometimes the printer might be connected to the wrong network or lost Wi-Fi settings. Re-enter the Wi-Fi password on your printer to reconnect it to your network[2].

– **Avoid VPNs:** If you have a VPN app or profile on your iPhone, delete or disable it as this can interfere with finding your printer[2].

– **Software updates:** Make sure your iPhone’s iOS and the printer’s firmware are both up to date. Updates often include fixes for connectivity and compatibility problems[2][4].

– **Use AirPrint:** Confirm your printer supports AirPrint. Printing requires the app to have a print option; tap the share icon or menu, select Print, then pick your AirPrint-enabled printer[3].

If all these steps fail, you might need to consult the printer manufacturer’s support for more specific troubleshooting, or consider resetting your printer’s network settings.

By following these troubleshooting steps, most iPhone printing issues can be resolved effectively[1][2][3][4].