Oppo F3 is a 5.5-inch touchscreen with 1080 x 1920 display resolution. It has 1.5GHz octa-core Mediatek MT6750T processor with 4GB RAM and 64GB internal memory which can be expanded up to 128GB via MicroSD card. It has dual front cameras of 16MP and 8MP resolution and 13MP rear camera.
Samsung Galaxy J7 Pro is a Dual SIM smartphone with a 5.5-inch display with a resolution of 1080 x 1920 pixels. It operates on Android Nougat and is powered by a 3600mAh non-removable Li-Ion battery. Under the hood, the Samsung Galaxy J7 Pro runs on Exynos 7870 Octa, with Octa-core proessor at 1.6 GHz of speed, with 3GB of RAM. As for the storage, it comes with 32GB of ROM which can be expandable up to 256GB via a dedicated MicroSD card slot. Samsung Galaxy J7 Pro packs a 13-megapixel rear camera and a 13-megapixel front/selfie camera. Other features include proximity sensors, accelerometer, GPS with A-GPS, Bluetooth 4.1, and a fingerprint scanner.
Vivo V5s smartphone specs & features are: Android operating system with Marshmallow version, Octa-core 1.5 GHz 20 MP front facing camera and 13 MP main camera, Wi-Fi, Bluetooth and memory card slot which can be expanded up to maximum 256 via Micro SD.
Apple iPhone 6 32Gb represents Apple's second largest departure in terms of design since the iPhone 4, and ushers in an era of rounded aesthetics. Equipped with a 4.7-inch display, the iPhone 6 is also much larger than its predecessor, the iPhone 5s, but Apple has managed to trim some extra fat in order to make the new iPhone even thinner, at 0.27 in (6.9 mm). 4.7-inch LED-backlit widescreen Multi-Touch display with IPS technology. 8-megapixel iSight camera with 1.5µ pixels A8 chip with 64-bit architecture. M8 motion coprocessor. 1080p HD video recording (30 fps or 60 fps) Internal Memory: 16GB, 1GB RAM
Samsung Galaxy A5 (2017) is a 5.2-inch smartphone rated IP68. It has a 16MP front and 16MP rear camera. It operates on Exynos 788- Octa-core 1.9GHz processor. It has 3GB of RAM and 32GB of ROM, expandable up to 256GB. The battery life is 3,000mAh and supports Fast Charging.