Telegram keeps its chat export in the desktop app, so a phone alone has no built-in way to print a chat. With 2doc you sign into your own Telegram account on the phone, turn the chat you pick into a dated PDF, and send it to Android's print dialog. Nothing goes to us.
On paper, a Telegram chat keeps its structure:
Your Telegram session lives on the phone until you end it, from 2doc's Settings or from Settings → Devices in Telegram, where it is listed as "2doc app". The sign-in and every import option are shown screen by screen in the Telegram chat to PDF guide.
A group prints with every speaker's name on their messages. A public channel can be printed too: search for it and it appears under Public results, whether or not you follow it.
A section can hold only so many messages. When a busy chat has more, the section keeps the newest ones and says so on the page; a shorter period brings them all in.
Print hands the document to Android's print dialog. Choose the printer, or Save as PDF for a file instead of paper, then the copies, paper size and pages. Only the print service you pick receives the file.
If the printer you want is missing, install its maker's print app. If the phone cannot print at all, 2doc says "Printing is not available": email the PDF to yourself and print it from a computer. The text messages printing guide has more ways onto paper.
Choose the days before you generate; 2doc shows its progress as it works back through older messages. A period too far back to reach in full is marked incomplete on the page rather than cut short in silence, and a shorter or more recent one prints complete. Today and 7 days are free; a 30-day or Custom period, even a short one, needs Pro.
A free Telegram account and the free version of 2doc print everything on this page for Today and 7 days. 30 days and Custom take Pro, bought once and never a subscription; neither version has ads. The Telegram chat to PDF guide has the full list of what Pro unlocks.
Periods too far back and the section's message cap are covered above; the Telegram chat to PDF guide has the full list.
No. 2doc signs in on the phone and makes the document there, so nothing has to be exported on a computer first.
A Telegram session on your phone, of the kind a second phone would get, listed in Telegram under Settings → Devices as "2doc app". 2doc reads only the chat and the period you pick. The details are in the privacy policy.
One chat per printout is free. Combining several chats in one document needs Pro.
Only if you want voice messages printed as text, since Telegram does the transcribing. A free account covers everything else.