Walton Primo S7 Android smartphone. Announced July 2019. Features 6.26 IPS LCD display, MediaTek chipset, 12 MP camera, Wi-Fi, 3G/4G, GPS. This phone is a low-range device with lot of premium features. Walton Primo S7 price in Bangladesh at Tk. 14,999. This phone is powered by a Android 9.0 (Oreo). Sensors on the phone include fingerprint, accelerometer, proximity and compass.