Mechanism: Telegram provides a special type of KeyboardButton that you can include in a ReplyKeyboardMarkup (a custom keyboard that appears above the user’s text input field). This button has a parameter called request_contact which is set to true.
User Experience:
The bot sends a message to the user that includes this request_contact button.
When the user taps this specific button, Telegram (the client app, not the bot directly) displays a clear confirmation prompt to the user. This prompt asks if they genuinely want to share their phone number with the bot.
The user must explici0tly confirm their consent on this prompt
If the user consents, Telegram telegram number database sends a regular Message update to the bot.
This Message object will contain a contact field.
The contact field is a Contact object, which includes:
Limitations of Phone Number Access for Bots
One-Time Share: The request_contact button shares the number for that specific interaction. The bot does not retain indefinite access to query brand portfolio management: maximizing your company’s value the number without the user initiating another share. Developers must store the number on their own server if persistent access is needed (and manage it securely! adhering to data privacy laws).
No Group Member Phone Numbers: Even if clean email a bot is an admin in a group, it cannot see the phone numbers of group members unless those members explicitly share their number with the bot via the request_conHow Developers Integrate Phone Numbers in Telegram Bots.