We saw OPPO's teaser on their periscope-style dual main camera system in the recent MWC 2017 and looks like we might gonna see their technology very soon.
Spotted from the guys at Gizchina was the probable case of OPPO R11
There are rumors that the OPPO R11 might gonna sport a newy discovered Qualcomm Snapdragon 660 and 5.5 inch display. The most important aspect to watch out is the dual main camera system.
Via Gizchina