To be an autodialer for TCPA purposes, a telephone device must either store phone numbers using a random or sequential number generator or produce phone numbers using such a generator. A device that stores phone numbers by some other means and then dials them is not an autodialer, and 47 USC 227(b)(1)(A) does not prohibit its use to call cell phones. However, the TCPA’s other restrictions (such as of calls using pre-recorded messages) which are not tied to use of an autodialer remain enforceable against the user of the non-autodialer telephone device.