Last night Telegram was down for about an hour in Europe due to hardware malfunctioning. Some iOS users who tried to access Telegram during this time may have been logged out and will unfortunately have to relogin.

We have already fixed the iOS app and the update is on the way to the App Store. We are also tweaking our networking software to minimize the risk of such issues in the future.

Telegram has a unique custom-built multi-datacenter infrastructure spead across the globe. This approach allows us to make things very efficient in terms of speed, security and cost, but can also pose some challenges in times of rapid growth. Each week, at least 10 million new users sign up for Telegram, and we are constantly scaling both our software and hardware.

Apologies for the downtime. We know how important it is for you to be able to access your messages 24/7 and we are working hard to achieve 100% uptime.