File manager indicates there is not one installed.
IF this is the right phone......
My droid maxx (XT1080) does not have an SD Card Slot the sim card is behind the volume buttons.
my droid maxx XT1080 is the same. No SD Card and sim behind voume up/down keys.
The specs for a Droid Maxx show that it does not have a SD card slot.
https://www.gsmarena.com/motorola_droid_maxx-5604.php
