<![CDATA[<b>]]>**%1$s<![CDATA[</b>]]>**'s app is using an incompatible protocol. They need to update their app before you can call them.
Error when your chat partner's app is incompatible in terms of Telegram calls. Can't be reproduced in official clients.
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Appen **%1$s** bruker er inkompatibel med nåværende protokoller. Vedkommende må oppdatere appen sin før det kan foretas et anrop mellom dere.
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Fair Dog,
Oct 16, 2018 at 21:59