Please help with avatars

Help please, can not see avatars in customers, capital letters are displayed on a colored background, but if you add an avatar on the device where you add - is visible, but others do not. We are talking about mobile devices.

what can be done?

thx/

Avatar are handled by Vcard.

Avatar are handled by Vcard. Set a Vcard with an avatar and if the client support it, it should be displayed.

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