According to 9to5Mac, an email sent by App Store manager Phil Schiller to a site reader explains what made Apple remove the popular messaging application.
“Telegram apps have been removed from the App Store because the App Store team has been alerted of illegal content, specifically child pornography, in the apps. After verifying the existence of illegal content, the team removed the apps from the store, alerted the developers, and notified the authorities, “the e-mail says.
When the Telegram was removed, the company’s CEO, Pavel Durov, explained that Apple claimed “inappropriate content” to exclude the app but did not go into detail.
It’s not yet clear exactly how inappropriate content was shared, but 9to5Mac speculates that the problem was caused by plugins used within the application. Like WhatsApp, Telegram uses end-to-end encryption, which means that it was not just images shared between users, as it is not possible to intercept those messages.
Telegram returned to the App Store a few hours after the episode with fixes to prevent inappropriate content from being shared again by it.