Instant Hotspot on your Mac
Lost your Wi-Fi connection? With Instant Hotspot, you can use the Personal Hotspot on your iPhone or iPad to connect your MacBook Pro to the internet instantlyβno password required.
Note: Personal Hotspot requires an iPhone or cellular-model iPad, with iOS 8 or later.
Connect to your deviceβs Personal Hotspot. Click the Wi-Fi status icon 
iβn the menu bar, then choose your iPhone or iPad in the list of devices that appears. The Wi-Fi status icon changes to 
. (You donβt need to do anything on your deviceβMacBook Pro connects automatically.)
Tip: If youβre asked for a password, make sure your devices are set up correctly. See the Apple Support article Use Instant Hotspot to connect to your Personal Hotspot without entering a password.
Check the status of your connection. Look in the Wi-Fi status menu to see the strength of the cellular signal.
When youβre not using the hotspot, your MacBook Pro disconnects to save battery life.
Learn more. See Use an iPhone or iPad to connect to the Internet in the macOS User Guide.