Looking to access Telegram on BlackBerry 10? If so, Chat for Telegram has arrived in BlackBerry World from Nemory Studios. The app is a hybrid native app that brings together some web app features with native BlackBerry 10 app features, to bring you Telegram access on BlackBerry 10.
Chat for Telegram mirrors the features of the web version, so it is always synced with the Telegram app on should you download it elsewhere such as your desktop, plus it allows for file sharing, messaging, group messaging and more. If you're interested in giving it a go, it's available right now in BlackBerry World for $2.99.
I should however mention, there are several other Telegram clients available on BlackBerry World such as Social IM for Telegram, Bomogram, Pintagram available for free. That said, most have not been updated in a long time and no longer work as well as they could if updated, so Chat for Telegram is at the very least, a newer option. Plus, as noted in the comments, the Telegram APK works pretty great as well!