<![CDATA[<b>]]>**%1$s<![CDATA[</b>]]>**'s app is using an incompatible protocol. They need to update their app before you can call them.
Error when your chat partner's app is incompatible in terms of Telegram calls. Can't be reproduced in official clients.
105
Gumagamit ng hindi tugmang protocol ang app ni **%1$s**. Kailangan nilang i-update ang kanilang app bago mo sila matawagan.
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Bethelyn,
Apr 10 at 16:34