Oppo's R11s smartphone has a 6" 1080x2160 (402 PPI) AMOLED display, an Octa-Core Snapdragon 660 CPU, 4 GB of RAM, 64 GB of storage, micro-SD slot, a dual 20 MP camera and Dual-SIM. The R11s Plus is similar but it sports a larger 6.43" display (same 1080x2160 resolution) and 6 GB of RAM.

Oppo R11s photo

The R11s and R11s Plus will ship by the end of November 2017 in China. The R11s will cost CNY 2,999 ($450) and the R11s Plus will cost CNY3,699 (around $550).

OLED type: 

6" / 6.3" 1080x2160 AMOLED