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I am currently confused if the iPhone does support sharing internet via USB cable or not. I was able to share my mobile data from iPhone to Macbook via USB cable, still need to enable Personal Hotspot Wi-Fi in Macbook is turn off. However I have a scenario where I am trying to connect to someone's Wi-Fi, the connection in Macbook is having trouble with Wi-Fi icon having exclamation saying the laptop is connected to network but cannot reached internet.

My iPhone can successfully connect to this network so I tried to use the same approach from the above, sharing internet coming from iPhone's Wi-Fi to Macbook via USB cable but unsuccessful.

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    If you’re asking a yes no question, yes iPhone tethering (and iPad tethering) provide network hotspot / routing over Bluetooth, USB (lightning and USB-C) as well as WiFi. My guess is you’re asking how to troubleshoot that when it doesn’t just work, though. Can you clarify your problem with an edit?
    – bmike
    Jan 14 at 14:37
  • @bmike does it also work when iPhone is connected to Wi-Fi and share it to Macbook via USB cable? Jan 14 at 14:49
  • No - hotspot is to send cellular data out. Not extend a WiFi network to wired. When hotspot is enabled on iPadOS and iOS it disconnects from whatever WiFi was associated and broadcasts a base station signal for others to join.
    – bmike
    Jan 14 at 18:16

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No, personal hotspot doesn’t let you connect to WiFi and then share that network over USB or Bluetooth. All three networks (phone WiFi, USB, Bluetooth) connect through your phone to a cellular network only.

Yes, personal hotspot shares networking over USB cable to other devices.

If you run into issues, here are some great steps to follow before getting extra help from Apple or here.

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