[FERRARI]

How to use your iPhone as a 4G LTE Wi-Fi hotspot
This works on a 2017 ZL1.
Make sure your iPhone’s data plan is sufficient for both your phone and auto usage.
Power iPhone thru console (not thru CARPLAY Aux port)
On iPhone:
SETTINGS:
DISPLAY & BRIGHTNESS - AUTO-LOCK —> NEVER (this ensures your iPhone will not automatically shut off thus disconnecting the hotspot)
WIFI —> ON
PERSONAL HOTSPOT - PERSONAL HOTSPOT —> ON
Use PASSWORD shown to set up MYLINK WIFI

After WiFi setup before starting car, Turn on iPhone to PERSONAL HOTSPOT which will now be discoverable by car.

SETTINGS - CELLULAR - CELLULAR DATA —> ON

On car:
MYLINK
SETTINGS:
WIFI
WIFI —> ON
MANAGE WIFI NETWORKS
ADD OTHER NETWORK
IPHONE, security WPA2, use PASSWORD from iPhone personal hotspot

After setup you may have to occasionally go to MANAGE WIFI NETWORKS and select IPHONE from available networks