First of all, open Settings > Mobile Data > Personal Hotspot or Settings > Personal Hotspot, depending on what version of iOS you’re using. Make sure it’s switched on, and Allow Others to Join is on. Make a note of the Wi-Fi password, which you might need later. Now you must connect the device you wish to take online through your iPhone, using Wi-Fi, Bluetooth or USB.
On the computer or tablet you wish to take online, open your Wi-Fi settings and look for the name of your iPhone in the list of available networks. Connect to it, and use the Wi-Fi password shown on your iPhone’s screen; the one you made a note of earlier. If you’re using an Apple device logged into the same Apple ID as your iPhone, the password might not be necessary. A connection is made, and your device can access the Internet using your iPhone’s mobile data plan.
Connect your iPhone to the device you want to take online with a USB cable. If the device in question is a Mac, go to System Preferences > Network, then select iPhone USB as your network. If it’s a different computer or tablet, follow the manufacturers’ instructions for connecting to the Internet using a USB device.
This works for Macs, PCs and more, but for iOS/iPadOS devices, use a Wi-Fi connection. On your iPhone, go to Settings > Bluetooth and make sure it’s on. Make sure the other devices’ Bluetooth is on too. If you see the device you want to connect in the Other Devices section, tap it and make a Bluetooth connection. If you don’t, make sure Bluetooth is switched on for that device too.
• On a Mac, click the Bluetooth icon in the menu bar, select your iPhone from the list then opt for Connect to Network.
• On a Windows PC, click on the Bluetooth icon in the Notification area and select Join A Personal Area Network. Right-click on your iPhone, hover the pointer over ‘Connect using’ and select ‘Access point’.