1. polaris82's Avatar
    Hi there,

    I've a big problem with my brand new Huawei P30 Pro. Like my Xiaomi phone before I wanna sync my CalDAV data from Posteo with my internal phone calendar storage. I'm using DavX5, however I tried also other Dav-Sync Apps. I'm not using the Google calendar in any way.

    After syncing the data some of my calendar items are missing (200 of 600). This happens also when I locally import my *.ics data with Business Calendar 2, so Posteo cannot be the reason for the problem. After the import a message shows me everything went fine, no lost items. However after starting my Calendar App once again 30% of items are missing. I've tried deleting cache of calendar storage, deactivating other calendar apps, was checking the *.ics file and shrink it down to the minimal requirement size/fileds necessary for working...

    I can do the same procedure with my old Xiaomi and it works fine. But not on my Huawei. My suggestion: There is something wrong with the internal calendar storage or handling of this data.

    Any ideas what could be the problem? Otherwise I have to sell this nice phone :-/

    Best, Gunnar
    07-15-2019 07:46 AM
  2. Galactic Zoo's Avatar
    I think your best option is to contact the developer for assistance
    07-15-2019 08:04 AM
  3. polaris82's Avatar
    You mean Huawei? Because I can exclude the calendar app and the sync app (tested with different apps and same problem)

    And I validated the *.ics file by https://icalendar.org/validator.html - only a few warning because line length throw out, due to the Mozilla Lightning export routine.

    It affects all internal calendars, so each local calendar you create too.

    Is there a bug report forum from Huawei?
    07-15-2019 11:16 AM
  4. Galactic Zoo's Avatar
    No, I meant the app developer because the app may not support your newer device or its OS.
    07-15-2019 11:41 AM
  5. polaris82's Avatar
    That isn't clear for me. If using different apps results in same error, then it seems not a problem of all the apps. Btw. the Huawei calendar app also dosn't show some of my calendar items. So it seems a problem of syncing by DavX5, but a local *.ics import result in the same problem of missing items... imo only the OS can be the problem. Or I misunderstood the calendar storage layer.
    07-15-2019 11:54 AM
  6. Galactic Zoo's Avatar
    SO are you saying your old Xiaomi and the Huawei are running on the same version of Android? I had assumed they weren't as the Xiaomi is older.
    07-15-2019 12:00 PM
  7. polaris82's Avatar
    You were right, the Xiaomi has an older Android 7, the Huawei Android 9. Maybe my speaking isn't clear enough: Your recommendation is to ask the app developer. Which app you mean? Because all apps show that missing calendar items... because they all are accessing the internal storage, so my assumption is an bug in that central part of Android/EMUI (internal storage).

    Right now I tested it with importing a single day with 17 items. Only 12 of them imported successfully. I tried with Google Web interface, that has successfully imported all 17 items. But after sync with the new phone it stated 17 successful items, however only 12 can be seen in three tested calendar apps (Huawei, aCalendar, Business Calendar).

    Maybe there is a limitation of 12 items per day in Android 9? Can't imagine... :-/
    07-15-2019 01:54 PM
  8. polaris82's Avatar
    I still have the hope that it is just a ridiculous and stupid mistake by myself ;-)

    However thanks for trying to help to me!
    07-15-2019 02:03 PM
  9. Galactic Zoo's Avatar
    I was thinking maybe a word with Posteo or Business Calendar 2 could address or rule out whether the latest OS is the issue. Also it may be an idea to see if there are support forums for these apps
    07-15-2019 02:15 PM
  10. polaris82's Avatar
    Now I've made a full smartphone reset: After a fresh EMUI 9.1.0.178 I only synced my Google Calendar. Result: Some entries missing, some successfully synced. Before I imported a small *.ics file to my Google calendar via the Web-App, also successfully. So, it seems Posteo or Business Calendar 2 are not the problem... there is something more deeper problem :-/
    07-15-2019 04:23 PM
  11. polaris82's Avatar
    Final question before the phone will sold Does anyone else have trouble with partly missing calendar items after sync from Google or somewhere else? It seems the problem appears more frequently with many items per day (15+) and with long summary entries (3+ lines) containing specials signs (umlauts etc.). I can reproduce the problem with a single day item list, imported into Google via *.ics file.

    Is it possible that I've got a faulty smartphone, that just need to be interchanged by the seller to remove my problem? Because the problem still appears after a complete phone reset, reproduced with Google sync only and very basic calendar items...

    Regards, Gunnar
    07-17-2019 03:36 AM
  12. polaris82's Avatar
    Impossible for me to import the following *.ics calendar file in my P30 Pro (*.178 firmware) calendar storage with any tool or service. It's a valid file. Some items can be imported, but many of the 17 items will be missing after import.

    Would be nice to see whether it works for anyone else.

    Code:
    BEGIN:VCALENDAR
    VERSION:2.0
    PRODID:-//Posteo Webmail//NONSGML Calendar//EN
    X-WR-Timezone: Europe/London
    BEGIN:VEVENT
    DTSTART:20190715T060000Z
    DTEND:20190715T061500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:e7074488-5115-4700-8628-9a8421a24769
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T070000Z
    DTEND:20190715T071500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:c085f200-3420-4cf7-89d7-2388b79b8ec4
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T080000Z
    DTEND:20190715T081500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:566f4c45-7efd-4302-9268-20fce94d5d2c
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T080000Z
    DTEND:20190715T081500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:939f542d-b075-4cdf-959d-98e8a31fdc70
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T080000Z
    DTEND:20190715T081500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:10d6a906-d9cb-4c9e-b0bf-2afaf6ae0f97
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T080000Z
    DTEND:20190715T081500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:23e2b972-49f0-4aa3-b5d9-38bde4d28f86
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T090000Z
    DTEND:20190715T091500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:76c31eca-bd69-4a42-aa4e-31aa9d9cf660
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:b13ef1b4-3514-4510-aab7-d6abd2f45dac
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:58324be6-2594-4501-82c9-000fcf3aa611
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:a155992b-c0c7-4067-9f2c-cd7d40db87e2
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:7d00ec25-7fe0-4bd6-9a04-2c915930067f
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:a3465d61-b96a-4c0c-aa90-a8422dc7c803
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T100000Z
    DTEND:20190715T101500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:2a1ccb1b-7c9b-48ed-b968-161f0689f4de
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T150000Z
    DTEND:20190715T151500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:c5689548-8e5c-4ea6-ad41-50cd5dc34882
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T180000Z
    DTEND:20190715T181500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:a113b957-e840-4625-b2a0-fb5aa840814d
    END:VEVENT
    BEGIN:VEVENT
    DTSTART:20190715T180000Z
    DTEND:20190715T181500Z
    DTSTAMP:20190715T073834Z
    SEQUENCE:1
    SUMMARY:Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    UID:978aac82-6869-492d-b457-129031b8eca7
    END:VEVENT
    END:VCALENDAR
    07-20-2019 09:15 AM

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