1. Why haven't I received my Telegram code?
If you're still signed in on another device, open Telegram there and check the official chat named “Telegram.” Your login code may have been sent in the app. If you're signing up for the first time, start by checking your number and SMS inbox. Telegram FAQ
2. What if the SMS still hasn't arrived?
Use the official Telegram mobile app. If +86 is already selected, enter only your 11-digit mobile number in the number field. Check blocked and spam messages. Once the countdown ends, resend the code once if the app offers that option. If it still doesn't arrive, ask your carrier whether international verification texts are being blocked.
3. What should I do if Telegram shows an SMS Fee prompt?
If the official app asks you to pay before it sends a code, review the amount and terms on screen before proceeding. Enter the verification code only in the official app. Telegram's SMS Fee prompt
4. What if I still can't log in?
Use the official Telegram support form. Include whether you're signing up or logging in, your phone model, and the exact error message. If another device is still signed in, keep that session active.