Some more info from my side:
When
- retrieving a contact
- updating the contact
- reloading the contact (to get the new eTag)
- updating the photo
the new contact info is lost. The new photo is attached, but the
changes on the contact itself are gone

When
- retrieving the contact
- updating the photo
- reloading the contact
- updating the contact
the photo is gone.

So my guess is that is takes some time on the server side to update
the info and that depending on race conditions it sometimes works,
sometimes not.
Is there a reliable way to update both photo and contact info at the
same time?

On 8 Okt., 09:56, dflorey <[email protected]> wrote:
> Hi,
> I need some info about what really happens behind the scenes when
> uploading a new photo to a contact.
> When uploading a photo, it seems that the update timestamp gets
> updated.
>
> I want to update a contact and the photo at the same time. So what
> steps do I have to take?
> From time to time I get mismatching eTag errors when simply updating
> the contact and the photo without reloading the contact inbetween.
>
> Can someone provide some more infos?
> Thanks a lot in advance,
> Daniel
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