How to Connect an iPhone to Wired Networksby Curt Lanning ; Updated September 15, 2017
Items you will need
Computer with wireless card
Most people think that because they don't have a wireless router, they can't share their Internet with their iPhone. This is false. Although your computer does need to have a wireless card, having a router is not required. All you do to share your wired Internet with the iPhone is turn on network sharing and make a wireless connection between the computer and the iPhone. If you are willing to invest a few minutes in this process you can share your wired Internet connection with your iPhone.
Access your network connections by clicking on "Start," "Control Panel," then "Network Connections." Right-click on your wired connection and open up the properties. Click the "Wireless Networks" tab and under Preferred Networks click "Add."
Wait for the new wireless network properties dialog box to open. When it opens, click on the "Association" tab and type the name of your wireless network you are creating.
Set the network authentication to "Open" and select the data encryption to be disabled. Check the box next to the words "This is a computer-to-computer (ad hoc) network." Click "OK" on all open dialog windows to save the settings.
Right-click on the local area connection and open the "Properties" from the menu that appears. Click the "Advanced" tab. Click the box next to "Allow other network users to connect through this computer’s Internet connection." Uncheck the box next to "Allow other network users to control or disable the shared Internet connection." Click on "OK" and close all windows.
Tap on your iPhone's "Settings" and "Wi-Fi." Turn the switch to "On." It will detect the wireless network you just made.