Save $120/year — use your existing unlimited data plan instead of Premium Connectivity
On iPhone go to Settings → Personal Hotspot and toggle ON.
On Tesla screen tap Controls → Wi-Fi. Find your iPhone name, tap it, enter password.
Tap the network name and enable Remain Connected in Drive to keep hotspot alive while moving.
Go to Settings → Display & Brightness → Auto-Lock → Never while driving.
Come back to this page in Tesla's browser. Saving $120/year vs Premium Connectivity. 🎉