License Overview
BYD EV Pro uses a cloud-checked license to enable features such as Companion App access, Home Assistant, and Telegram. The Car App checks license status online and caches it locally so the app keeps working during brief connectivity gaps.
New installations are eligible for a 14-day trial. To start it, open the license section in the Car App and use the trial activation option. One trial is allowed per vehicle (identified by VIN) — if no VIN is available, the limit applies per installation.
How license checks work
Section titled “How license checks work”The Car App contacts the cloud to verify your license when internet is available. The result is cached locally so the Car App keeps working even without an active connection. If the Car App has been offline for more than 72 hours and cannot refresh its license, licensed features stop working until connectivity is restored.
License tiers
Section titled “License tiers”There are two license tiers. The table below shows what each unlocks:
| Feature | App tier | Web tier |
|---|---|---|
| Car App dashboard and controls | Included | Included |
| Companion App | ✓ | — |
| Home Assistant integration | ✓ | ✓ |
| Telegram notifications | ✓ | ✓ |
TODO: Product clarification needed — What are the public names, prices, durations, and purchase channels for each tier?
Paid activation and renewal
Section titled “Paid activation and renewal”The current Car App source does not show a complete end-user purchase or renewal flow inside the Car App. Public docs should not describe internal license-issuing tools as user-facing product behavior.
TODO: Product clarification needed — What end-user renewal flow and public support channel should be documented?
Support
Section titled “Support”When reporting a license problem, include the Car App license status, valid-until date if shown, and whether the issue affects Companion App, Home Assistant, Telegram, or T-Box behavior.