POWER OF ATTORNEY

Know all by these presents that the undersigned, does hereby make, constitute
and appoint each of Todd Pedersen, Dale Gerard and Shawn Lindquist, or any one
of them, as a true and lawful attorney-in-fact of the undersigned with full
powers of substitution and revocation, for and in the name, place and stead of
the undersigned (in the undersigned's individual capacity), to execute and
deliver such forms that the undersigned may be required to file with the U.S.
Securities and Exchange Commission as a result of the undersigned's ownership of
or transactions in securities of Vivint Smart Home, Inc. (the "Company") (i)
pursuant to Section 16(a) of the Securities Exchange Act of 1934, as amended,
including without limitation, statements on Form 3, Form 4 and Form 5 (including
any amendments thereto) and (ii) in connection with any applications for EDGAR
access codes, including without limitation the Form ID. The Power of Attorney
shall remain in full force and effect until the undersigned is no longer
required to file Forms 3, 4 and 5 with regard to his or her ownership of or
transactions in securities of the Company, unless earlier revoked in writing.
The undersigned acknowledges that Todd Pedersen, Dale Gerard and Shawn Lindquist
are not assuming any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934, as amended.


             By: /s/ Jung Taik Hwang
                 -------------------
             Name: Jung Taik Hwang


             Date: March 3, 2020