Troubleshooting
Official telegram.org Source
Please make sure you are entering your mobile phone number in the international format.I.e.:+(country code)(city or carrier code)(your number)
If you are having registration or login problems, please contact us usingthis form.
Official Telegram Reference: https://telegram.org/faq
Part of the TGWAY.com Official Telegram Knowledge Base (98 Verified Q&As).