The explanation of which year oppor11 was launched is as follows

OPPO’s R11 mobile phone was launched in 2017; the mobile phone was released in Shenzhen on June 9, 2017, equipped with Qualcomm Snapdragon 660 processor, 4GB running memory, can support up to 128GB expandable memory, battery capacity is 3000 mAh, the first system is the "ColorOS3.1" system developed based on "Android7.1.1". OPPOR11 is equipped with Qualcomm Snapdragon 660 processor, 4GB running memory, and 64GB storage. Supports up to 128GB expandable memory, 3000 mAh capacity battery, ColorOS3.1 system developed based on Android7.1.1 OPPOR11 body uses metal material, 1.6 mm narrow frame, U-shaped rail glue spraying process, and the back adopts Micro-curved design; body color available in four colors: rose gold, gold, thermal red and black. Appearance design The OPPOR11 series adopts a metal integrated body and an ultra-narrow bezel design on the front, and a micro-arc surface design on the back. The OPPOR11 Barcelona limited edition integrated body back shell has gone through a series of complex processes including three times of anodizing and coloring, micro-slit antenna glue, and solving problems such as diffuse reflection of the front frame. The 18K gold-plated team emblem is embedded on the back. The back of the OPPOR11TFBOYS limited edition body is embellished with the "black gold" LOGO and the TFBOYS triangle nameplate. Different OPPOR11TFBOYS limited editions will also have the corresponding laser-engraved signatures of the three little ones. The three versions are each signed by the three little ones.