Android 8.0.0 Oreo, which ships on all carrier branded and retail unlocked variants of the Moto E5 Play, does not overly consume the 16GB eMMC storage. The /system partition itself is of the ext4 filesystem and is formatted at about 2.34 GB in size. The /userdata partition -- which uses the f2fs filesystem -- is formatted at 10.8 GB in allotted size. So, notwithstanding the Android OS and other dedicated firmware partitions (there are 54 partitions total), a Moto E5 Play owner always starts off with 10.8 GB free out of the 16 GB for internal storage space. Moreover, the Moto E5 Play supports up to 512 GB external storage via microSD card. Adoptable storage is also supported for device owners who opt to format their external microSD card as internal storage. In this type scenario, internal storage can be calculated by adding the 10.8 GB native internal storage space to the total storage space available on formatted adoptable storage. With a 64 GB external microSD card, for example, about 59 GB remains free after formatting. So, 10.8 GB + 59 GB would calculate to 69.8 GB -- or approximately 70 GB -- internal storage space available using the adoptable storage platform.