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Check whether a single phone number is registered on Telegram

Source: R/phone_number_checker.R
check_phone_on_telegram.Rd

Adds the phone number to the authenticated account's contacts via `ImportContactsRequest`, captures any matching user, then removes the contact via `DeleteContactsRequest`. The contact addition is transient — Telegram users are not notified.

Usage

check_phone_on_telegram(
  client,
  phone,
  download_profile_photo = FALSE,
  photo_dir = NULL
)

Arguments

client

An authenticated [TelegramClient] instance.

phone

Phone number string in international format (e.g. `"+15551234567"`).

download_profile_photo

If `TRUE`, attempt to download the matched user's profile photo into `photo_dir` (default: `tempdir()`). Failures are reported as warnings.

photo_dir

Directory to save downloaded profile photos; created if it doesn't exist. Ignored when `download_profile_photo` is `FALSE`.

Value

A named list with the user's public fields, or a list with an `error` field describing why the lookup failed (no match, multiple matches, RPC error, ...).

See also

[check_phones_on_telegram()] for batch lookups.