"Expandability" refers to the ability of something, such as a device or system, to be increased or enhanced in size, capacity, or functionality. Full definition
-- Military Standard 810G certification — 2.0 - inch QVGA TFT main display (240 x 320 pixel resolution)-- Based on the QSC6085 chipset — 3.2 MP camera with flash — Memory expandability of up to 32 GB via microSD card slot — 1,360 mAh Lithium - ion battery — GPS, Bluetooth 2.0 + EDR — Programmable hot key — 101.5 x 53.5 x 28.5 millimeters in dimensions — 151.9 grams in weight (techshout.com)
Both smartphones come with 16 GB of built - in storage, with support for expandability via microSD card (up to 2 TB). (gadgets.ndtv.com)
Wiio WI3 features 8 GB of inbuilt storage with expandability via microSD card (up to 32 GB). (gadgets.ndtv.com)