You can write to your phone contacts and find people by their usernames. With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc), as well as create groups for up to 200,000 people or channels for broadcasting to unlimited audiences. Telegram has over 500 million monthly active users and is one of the 10 most downloaded apps in the world. You can use Telegram on all your devices at the same time - your messages sync seamlessly across any number of your phones, tablets or computers. Telegram is a messaging app with a focus on speed and security, it’s super-fast, simple and free. General Questions Q: What is Telegram? What do I do here? Telegram uses the camera or microphone in the background.Why do you have two apps in the Mac App Store?.How does account self-destruction work?.I have a new phone number, what do I do?.Can Telegram protect me against everything?.Do I need to trust Telegram for it to be secure?.What if someone is pretending to be me?.What do the check marks mean in Telegram?.