Ask Slashdot: Do you still have a pager? Do you find it useful?

Chance Callahan writes: I am starting a business, helping a friend with his own startup, and volunteering regularly with a major political campaign (#feelthebern). One thing I have noticed is that my phone likes to die at the most inconvenient times and leaves me out of touch with people. With the business I'm starting requiring clients to be able to get ahold me quickly, I have been seriously considering getting a two-way pager. It's much easier swap out a AA battery once a month then to worry "will client X be able to get ahold me in the event of an emergency?".

So, Slashdot, the million dollar question is, in the age of cell phones, do you have a pager? Do you still find it useful?