Inconsistent behavior when Bluetooth is disabled (Android and iOS) about covid-green-app HOT 11 CLOSED

@kevin-sheldon @mboskin Paul is going to provide some details on the expected behavior when toggling BT on and off. Can we kindly make these part of the UAT scripts? Thank you.

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When and how will Paul provide the details?

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Note that on android ens api does not report when Bluetooth is off so it is expected that app shows as tracing active.

On iOS there are 2 ways to disable Bluetooth, control panel on settings. Only when disabled is Bluetooth actually app and the app will the show tracing as inactive. Switching bluettoh off via control panel does not actually disable bluettoh, its just disables new connections

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Note that on android ens api does not report when Bluetooth is off so it is expected that app shows as tracing active.

On iOS there are 2 ways to disable Bluetooth, control panel on settings. Only when disabled is Bluetooth actually app and the app will the show tracing as inactive. Switching bluettoh off via control panel does not actually disable bluettoh, its just disables new connections

There is nothing to add to this. Describes perfectly how the app behaves.

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@colmharte @dharding regarding "Note that on android ens api does not report when Bluetooth is off so it is expected that app shows as tracing active." Would this be something we raise with Google then? What's the best way to move forward here? We probably don't want the situation where an Android user is given incorrect status.

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@colmharte @dharding Do Android APIs let us directly query the status of BT? If so, can we get around this issue by checking both ENS and BT at least on Android, and if BT is off we know to warn the user that ENS is disabled, even though Android falsely claims that it isn't?

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We cannot query BT via ENS and cannot query BT directly. This issue can only be resolved if Google make the status of BT available through ENS. There is nothing more we can currently do with this so we should close this issue.

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As per Colm's update above.

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This is on our list to be added.

Regards
Colm

On Thu 3 Sep 2020, 20:44 Sheldon, Kevin M (HEALTH), [email protected] wrote:
Hi Colm,

We had reached out to Google regarding the disabling of Bluetooth and impact to the app. Andrew had mentioned that they are able to query BT directly in their sample implementations, which I recall you mentioning that NF cannot do.

Andrew had provided a link to the code here, and we wanted to see if you could take a look. Not alerting a user that their Bluetooth is disabled will defeat the main purpose of the app if they don’t realize that exposure notifications are not being logged.

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I tested the cases reported originally.

On iOS:

If you turn OFF BT (using Control Center), App does not detect the change and continue to say it's Active.
If you turn OFF BT (using Settings>Bluetooth), App does detect the change and shows the appropriate error.
If you turn OFF BT (using Settings>Bluetooth) and start onboarding, it will tell you to turn ON Bluetooth at the end of onboarding.
Apple do NOT push a notification on the device when ENS is not active (unlike Android).

On Android:

If you turn OFF BT, you get a system ENS message + the app now shows the BT error.

It is a pity Control Center BT does not behave like the Settings>BT but it's on Apple's side for now. Let's hope it get fixed soon.

I'm closing this.

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