<![CDATA[<b>]]>**%1$s<![CDATA[</b>]]>**'s app is using an incompatible protocol. They need to update their app before you can call them.
Error when your chat partner's app is incompatible in terms of Telegram calls. Can't be reproduced in official clients.
105
**%1$s** 所使用的 App 採用了不相容的通訊傳輸協定，對方需要先更新 App 後您才能打電話給對方。
55/105
Transifex,
Nov 9, 2018 at 23:39