Of course, you can just have a way to transfer the code to other phones from the phone that has it. Using QR codes or something, shouldn’t be too hard. But wit

Of course, you can just have a way to transfer the code to other phones from the phone that has it. Using QR codes or something, shouldn’t be too hard. But with Telegram, if you prove to the servers satisfaction that you control the associated phone number, the server will give you the key and all the old messages. So clearly the server has the key and the messages, and also Telegram documents that it works like this.