The memory storage of the phone is organized in structures called Partitions. The Android operating system uses the system partition. Applications use data partition, etc. The size of the Data Partition plays a critical role in the number of applications you can install. User storage (music, downloads, etc.) is implemented as part of the internal data partition or on an external SD card
Supported Android
(4.1 and up)
Ice Cream Sandwich (4.0 – 4.0.4),Jelly Bean (4.1 – 4.3.1),KitKat (4.4 – 4.4.4),Lollipop (5.0 – 5.1.1),Marshmallow (6.0 – 6.0.1),Nougat (7.0 – 7.1.1),Oreo (8.0-8.1)