OWNER ANSWER
Can you use the BYD app on two phones? Family access explained
Vehicle Authorisation lets the linked owner invite another person to use selected BYD app controls through their own account. In BYD’s help it appears as Authorization. Invite the email they use for their account, then check that the right car and shared controls appear on their phone.
- Update the official BYD app on both phones.
- Check that the car is bound to the correct primary owner account.
- Have the second person sign in to their own BYD account with their own email address. BYD says you cannot authorise yourself; this is access for another user, not a second owner binding.
- On the owner’s phone, open the vehicle or account-management area and select the current Authorization or vehicle-sharing control.
- Check the recipient and send the invitation.
- Ask the recipient to accept it in their own account.
- Test the functions shown as authorised beside the parked car with the physical key available.
What to expect
The recipient accepts the invitation in their own account, sees the correct vehicle and can use the permissions you granted. The owner account remains the owner; this is authorised shared access.
If that did not work
- No Authorisation control: check that the signed-in account is the bound owner, not an authorised guest. Ask BYD to confirm the owner binding if that is unclear.
- Invitation missing or rejected: compare the recipient account with the one invited, and confirm it belongs to the other person. If it still fails, give BYD the error and both app versions and ask it to check the recipient account role and invitation.
- Invitation accepted but a control fails: check which permissions the owner granted. If the permitted function still fails, use the app connection checks below and report the particular control and error.
- App works but there is no key in Wallet: use the separate Digital Key setup route for a compatible car and device. Accepting app access alone does not confirm a Wallet key is active.
Keep passwords, email access, verification codes and activation messages private.
App access and Digital Key are separate
BYD allows one bound owner account and lets that owner authorise other users. Vehicle authorisation does not transfer ownership or automatically create a phone-wallet key. Decide whether the other person needs app controls, a Digital Key, or both, and set up each supported route separately.
Removing access
Review app authorisations and wallet keys separately when access is no longer needed. Remove the relevant permissions using the owner controls shown in the app and wallet.
Related links
Related MyBYD help · BYD app connection checks · BYD app setup and owner routes · Find your model’s handbook · Set up a supported phone-wallet Digital Key
Source: BYD Europe official source · BYD Europe Digital Key. Checked 22 October 2026.
Find the BYD app pairing QR code
Family-account authorisation checked 13 November 2026 against BYD’s official app guidance. Menu wording and available permissions can vary with app version.