The SGH-D100 is a GSM clamshell phone with two displays: the main one is a LCD (128x160), and the sub display is a 256-color, 64x64 PMOLED.

SGH-D100 photo

The SGH-D100 supports Java, email (with multiple accounts), tri-band world roaming, MMS, infrared, and voice memo.

OLED type: 

64x64, 256 colors PMOLED

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters