The back panel is constructed from a rubber-like and highly flexible plastic.
The camera and speaker grill can be found at the top on the back panel.
[1] The phone screen is a TFT LCD which measures 3.2 inches along the diagonal.
[2] The phone has a single-core ARMv6 ARM1136[4] 32-bit Broadcom BCM21553[5] processor running at 832 MHz and VideoCore IV GPU.
There are four connection modes available through this; Modem, Mass Storage, Samsung Kies, and USB debugging.
Samsung Kies connects the phone to the computer, whilst Mass Storage mounts the phone's internal storage and microSD as separate navigable drives on your computer.
[1] The phone comes with bada OS 2.0 built in, which Samsung optimized to run on the lower-spec hardware in the S5380.