How to use my iPhone 7 Plus as a WiFi Adapter for my Windows 10 desktop pc? [duplicate]

Sorry, but it's not possible to do this without jail breaking. The "Personal Hotspot" function on an iPhone only allows for sharing the 3G connection, not the wifi connection, so you can't use it as a wifi adapter. It's feasible that Apple could add this functionality, but it's a fairly niche case, so I wouldn't count on it.

More immediately, if you have a laptop with wifi available, you could use Internet Sharing (OS X)/Internet Connection Sharing (Windows) and an ethernet cable to get connectivity to your desktop. Or if you've got a Staples or something similar nearby, they usually have USB wifi adapters for $30 or less.

Of course this is possible:

1. Your iOS device must be joined to wifi connection
2. Your iOS device must be jailbroken
3. Your PC must have iTunes on it
4. Install MyWi 5.0 over Cydia (Cydia will be installed on your iOS device after you jailbreak it)
5. Choose USB tethering in USB tab
   • Set MyWi USB to ON
   • Go to Advanced USB
   • Set USB Bridhe to "Bridged to WiFi" so you don't get online via 3G
6. Enjoy your wireless internet connection