Picture taken from Android Authority ^(http://www.appmarsh.com/)
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According to Android Authority:
“The Oppo R7 Plus was released in May of 2015 running Android 5.1 Lollipop. Under the 6 inch AMOLED display is the Snapdragon 615 featuring a quad core 1.5GHz Cortex-A53, quad core 1GHz Cortex-A53, and 3GB of RAM. In addition to the 32GB of on-board storage, Oppo included a microSD card slot that doubles as a second SIM card slot. The microSD card slot is compatible with cards up to 128GB in capacity. On the back is a 13MP camera with Schneider-Kreuznach optics, laser autofocus, and dual LED flash. On the front is an 8MP camera”.