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[SR] STRONGLY RECOMMENDED to implement Safe Boot Mode.

If device implementations implement Safe Boot Mode, they:

[C-1-1] MUST provide the user an option to enter Safe Boot Mode in such a way that is

uninterruptible from third-party apps installed on the device, except when the third-party

app is a Device Policy Controller and has set the UserManager.DISALLOW_SAFE_BOOT flag

as true.

[C-1-2] MUST provide the user the capability to uninstall any third-party apps within Safe

Mode.

SHOULD provide the user an option to enter Safe Boot Mode from the boot menu using a

workflow that is different from that of a normal boot.

9.14. Automotive Vehicle System Isolation

Android Automotive devices are expected to exchange data with critical vehicle subsystems by using

the vehicle HAL to send and receive messages over vehicle networks such as CAN bus.

The data exchange can be secured by implementing security features below the Android framework

layers to prevent malicious or unintentional interaction with these subsystems.

9.15. Subscription Plans

"Subscription plans" refer to the billing relationship plan details provided by a mobile carrier through

SubscriptionManager.setSubscriptionPlans() .

All device implementations:

[C-0-1] MUST return subscription plans only to the mobile carrier app that has originally

provided them.

[C-0-2] MUST NOT remotely back up or upload subscription plans.

[C-0-3] MUST only allow overrides, such as

SubscriptionManager.setSubscriptionOverrideCongested() , from the mobile carrier app currently

providing valid subscription plans.

10. Software Compatibility Testing

Device implementations MUST pass all tests described in this section. However, note that no

software test package is fully comprehensive. For this reason, device implementers are STRONGLY

RECOMMENDED to make the minimum number of changes as possible to the reference and preferred

implementation of Android available from the Android Open Source Project. This will minimize the

risk of introducing bugs that create incompatibilities requiring rework and potential device updates.

10.1. Compatibility Test Suite

Device implementations:

[C-0-1] MUST pass the Android Compatibility Test Suite (CTS) available from the Android

Open Source Project, using the final shipping software on the device.

[C-0-2] MUST ensure compatibility in cases of ambiguity in CTS and for any

reimplementations of parts of the reference source code.

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