Major data usage (2,25GB mobile data in one month)

[dadosch]

Avoid duplicates

• [x] Bug is not mentioned in the FAQ
• [x] Bug is specific for Android only, for general issues / questions that apply to iOS and Android please raise them in the documentation repository
• [x] Bug is not already reported in another issue

Technical details

• Device name: Samsung Galaxy A3 2016
• Android version: Android 7.0
• App version: 2.16.2

Describe the bug

The CWA used 2.25 GB (!) of mobile data in 28 days. Usage in WiFi is unknown.

Steps to reproduce the issue

Expected behaviour

The data usage should not be this high.

Possible Fix

Additional context

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Internal Tracking ID: EXPOSUREAPP-11611

[vaubaehn]

@dsarkar

Dear Dipankar, please have an eye on Google Play Store reviews, whether such questions will come. In case, could be good to prepare the support team (and technical hotline) for adequate answers.

See Google Play Store Review https://play.google.com/store/apps/details?id=de.rki.coronawarnapp&reviewId=gp%3AAOqpTOFoxzyLqrS7NVdrj98sNpOtUL7V0XN6A5veCJOup5zwT--jZprw2uCcne8wiYOEI0iH5qanELslTnLKrg

Thank you ❤️

[Jo-Achim]

I think it's time to say a special thank you to everyone who found, described, experimented with, etc. this problem and finally found and implemented a solution. Especially to @vaubaehn.

[dsarkar]

@vaubaehn Thanks, we have seen that one actually, preparing FAQ.

[mlenkeit]

I think it's time to say a special thank you to everyone who found, described, experimented with, etc. this problem and finally found and implemented a solution. Especially to @vaubaehn.

I can only second that, thanks a lot on behalf of the team to you all of you for the thorough analysis and relentlessly pushing this topic!

[dsarkar]

@vaubaehn FYI - PR https://github.com/corona-warn-app/cwa-website/pull/2581

[Ein-Tim]

@dadosch

Could you please check whether this issue has been fixed for you, and if yes, close this issue?

[dadosch]

Yes, I can confirm it no longer seems to appear. Thank you all for analysing, identifying, insisting on and finally solving this issue 🎉

[vaubaehn]

Hi @mtwalli , there are some reports in Google Play Store reviews, that "Risiko-Ermittlung" is not working since "a couple of days", even when hotfixes 2.19.1/2.19.2 are installed. My idea is, that a slow device that already had problems to finish provideDiagnosisKeys() with ENF-returned success before the hotfix, still has the problem to achieve a successeven with hotfix 2.19.1, as for the very first provision with delta-functionality one last time all available DK packages need to be provided (to then be able to create the delta). That would mean, as soon as DK packages are small enough that the "device gets them through to ENF once" there shouldn't be any problem anymore in the future.

Here is one example review: https://play.google.com/store/apps/details?id=de.rki.coronawarnapp&reviewId=gp%3AAOqpTOE7RrVyj1aL2e1d7yz9-ruEvgrqc-MKVrlYtWA8kQ2F0ZTlRWsXG5FWHbcLPkEXET8qc42adtGX8F0WzA

Could you kindly look into the error report with ID 9641A3BE1579D4DE0F95 and confirm, that due to timeout ENF does not return successafter provision of DK packages? If this is the case, Google Play Store support team could respond that a fix is already installed and the device will recover itself in "some days".

[thomasaugsten]

The log shows timeout but also success. This user should see a current calculation

[TrackedExposureDetection(identifier=696b0456-2e5b-4aff-8352-ff8247666cbf, startedAt=2022-03-26T02:30:52.915Z, result=TIMEOUT, finishedAt=2022-03-26T05:42:32.975Z, enfVersion=V2_WINDOW_MODE), 
TrackedExposureDetection(identifier=feff6aa2-4c36-41ee-bd34-97dc08fb8558, startedAt=2022-03-27T02:42:14.586Z, result=TIMEOUT, finishedAt=2022-03-27T05:08:14.695Z, enfVersion=V2_WINDOW_MODE), 
TrackedExposureDetection(identifier=99849abc-32bd-4047-9fd3-c79f39da26fb, startedAt=2022-03-28T02:49:35.023Z, result=TIMEOUT, finishedAt=2022-03-28T05:33:39.886Z, enfVersion=V2_WINDOW_MODE), 
TrackedExposureDetection(identifier=dcb67a18-5398-4a32-a1c7-c180b66a0180, startedAt=2022-03-29T01:14:06.960Z, result=TIMEOUT, finishedAt=2022-03-29T01:30:25.292Z, enfVersion=V2_WINDOW_MODE), 
TrackedExposureDetection(identifier=24c9a676-c372-48e6-93f4-160a8de5f3e4, startedAt=2022-03-29T06:11:40.279Z, result=NO_MATCHES, finishedAt=2022-03-29T06:11:41.807Z, enfVersion=V2_WINDOW_MODE)]

[vaubaehn]

Thanks @thomasaugsten . Looks like the user was on "mobile mode", with only one provision per day. And yes, since this morning he should be able to see an updated risk tile. @dsarkar , do you have the possibility to initiate a communication in some way (e.g., via Play Store) whether the risk tile is now updated? If the response is "yes", then due to the hotfix 2.19.1 the issue should be solved for him in the future. Edit: You will find the user via the link in https://github.com/corona-warn-app/cwa-app-android/issues/4753#issuecomment-1081875445

[vaubaehn]

Hi @dsarkar , would it be possible to initiate a follow-up with a user in Google Play Store to rule out any problems with hotfix 2.19.1, like asked here: https://github.com/corona-warn-app/cwa-app-android/issues/4753#issuecomment-1081890580 with reference to here: https://github.com/corona-warn-app/cwa-app-android/issues/4753#issuecomment-1081875445 ? That would be good, thanks in advance!