CWA takes over 500mb icloud backup space

[cebor]

Avoid duplicates

• [x] Question is not already answered in the FAQ
• [x] Question is specific for iOS only, for general issues / questions that apply to iOS and Android please raise them in the documentation repository
• [x] Question has not already been asked in another issue

Your Question

• Question: Since one of the last updates the CWA takes over 500mb icloud backup space, is this normal? Using latest version of CWA on iOS 15.1

---

Internal Tracking ID: EXPOSUREAPP-9646

[Ein-Tim]

@cebor Could you let us know what data you have stored in the CWA (certificates, test results, etc.)

@thomasaugsten looking at #3626 I'm not sure why something is backed up to iCloud? Is CWA theoretically able to get the data from iCloud if restored?

[cebor]

@cebor Could you let us know what data you have stored in the CWA (certificates, test results, etc.)

@thomasaugsten looking at #3626 I'm not sure why something is backed up to iCloud? Is CWA theoretically able to get the data from iCloud if restored?

I've added only a single vaccination certificate.

[Ein-Tim]

@cebor

Okay thanks for your answer.

Here are are my numbers:

• I have 7 vaccination certificates stored in the app
• I have one check in
• I have contact journal entries for nearly all dates in the past 14 days

CWA takes up 1,33 GB of iCloud storage in the backup. iPhone XR, iOS 15.1.

Thanks for bringing this up!

@dsarkar This should be investigated ASAP, as users with only limited iCloud storage might uninstall CWA because of the high iCloud storage consumption!

@ndegendogo Could you check how many space is CWA taking up on your iCloud?

[dsarkar]

Thanks everybody: Internal Tracking ID: EXPOSUREAPP-10619

[thomasaugsten]

@cebor How much space the app is using under Settings-> General-> Space-> Corona-Warn

[ndegendogo]

Actually, I don't use iCloud. Settings-> General-> Space-> Corona-Warn shows 358.7 MB (App size = 41.1 MB / data size = 317.6MB). My configuration is: iPhone 8 / iOS 14.4.1 / cwa 2.13.1 I am using the contact journal regularly. I have my two vaccination certificates. No tests, no check-ins.

[dsarkar]

@Ein-Tim How much space the app is using under Settings-> General-> Space-> Corona-Warn

[Ein-Tim]

@dsarkar

CWA is taking up 534,5 MB of space. Documents & Data = 494,7 MB App data = 39,8 MB

[cebor]

For me it's like this:

[dsarkar]

@Ein-Tim @cebor Thanks for the feedback, added to the internal ticket.

[dsarkar]

@Ein-Tim How big is your error log(s)?

[Ein-Tim]

@dsarkar I don't have any error logs in the app.

[dsarkar]

@Ein-Tim ;-) Bit surprised! Thanks for the feedback!

[tmechen]

this doesnt look like a one time off problem, same for me - cwa is the single largest contribution to my icloud backup space. how do you even aggregate 242 M(!)B of data just storing some keys?

general storage	icloud backup

[ndegendogo]

@tmechen could you please give more details on your configuration? (iOS version / app version / device type)

[tmechen]

ah sry, ofc:
iOS 15.1 (19B74) - CWA 2.14.1 - IPhone SE Gen 2

edit
some further info:

• currently no check in
• currently no journal data
• 1 certificate

[larswmh]

Good morning @tmechen. Thank you for sharing your case with us. We will forward the information to the internal ticket.

---

Corona-Warn-App Open Source Team

[moabits]

I just re-installed the app less than a week ago and the CWA already takes up a little over 150 MB (!) in the iCloud backup. On the device, it takes up 40 MB of App Size and 63 MB of Documents & Data.

[dsarkar]

@moabits @cebor @tmechen @ndegendogo @Ein-Tim Good morning, FYI PR: https://github.com/corona-warn-app/cwa-app-ios/pull/3962

[Ein-Tim]

Good morning @dsarkar!

Thanks for linking the PR! I was unsure whether it's really supposed to fix this issue, but seems like it!

Have a nice Friday!

[Ein-Tim]

CWA still takes 1,15 GB space in my iCloud backup. When keeping in mind that no data from CWA is actually restored (see https://github.com/corona-warn-app/cwa-app-ios/issues/3626) on a new device, I wonder why it's backed up in iCloud at all.

[dsarkar]

Good morning @Ein-Tim, I understand you are now on CWA 2.15.1? Thanks for the feedback.

[Ein-Tim]

@dsarkar

Yes, sorry, I forgot, I'm on 2.15.1 now and will make another backup now and see how many storage CWA will take up.

[dsarkar]

@Ein-Tim Ok, thanks. Could you provide screenshots of the numbers?

[Ein-Tim]

@dsarkar

With the last backup, the storage used decreased.

[dsarkar]

@Ein-Tim Thanks, I will forward this to the internal ticket.

[dsarkar]

Dear @cebor @tmechen, we would appreciate your feedback: What are your current number? Thanks, best wishes, DS

---

Corona-Warn-App Open Source Team

[tmechen]

still using ~400mb on version 2.15.1. what is using this space? this is 10% of the available space for every free icloud user with 0 benefit?

[dsarkar]

@tmechen Thanks for your feedback.

[whiskey]

Logging ("Fehleranalyse") enabled?