Telegram, the messaging app, has reached 1 billion monthly active users.
CEO Pavel Durov took a dig at Meta-owned rival WhatsApp, calling it a 'cheap, watered-down imitation of Telegram.'
Durov has been allowed to leave France after being held on charges of failing to curb extremist content.
Telegram also announced policy changes, including joining the Internet Watch Foundation and sharing offender information with law enforcement when legally required.