Comparison of Samsung Galaxy S6 Duos and Oppo A77

Comparison of Samsung Galaxy S6 Duos and Oppo A77 [S]ave

Attribute	Oppo A77 ×	Samsung Galaxy S6 Duos ×
General
Brand	Oppo	Samsung
Launch
Announced	2017-07-01	2015-06-01
Body
Width (mm)	7.4	6.8
Length (mm)	153.3	143.4
Height (mm)	75.9	70.5
Weight (g)	148	138
SIM	Hybrid Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
Front	Glass	Glass
Back	Aluminum	Glass
Frame	Aluminum	Aluminum
Network
Technology	CDMA GSM HSPA LTE	GSM HSPA LTE
2G bands	CDMA 800 & TD GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G bands	1, 3, 4, 5, 7, 8, 34, 38, 39, 40, 41 1, 3, 4, 5, 8, 34, 38, 39, 40, 41 - A77	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26
Speed	HSPA 42.2/5.76 Mbps LTE	HSPA 42.2/5.76 Mbps LTE-A Cat6 300/50 Mbps
Platform
OS	Android 7.1 (Nougat)	Android 5.0.2 (Lollipop)
Chipset	Qualcomm MSM8953 Snapdragon 625 (14 nm)	Exynos 7420 Octa (14 nm)
CPU	Octa-core 2.0 GHz Cortex-A53	Octa-core (4x2.1 GHz Cortex-A57 & 4x1.5 GHz Cortex-A53)
GPU	Adreno 506	Mali-T760MP8
Memory
Card slot	microSDXC (uses shared SIM slot)	No
Internal	64GB 4GB RAM	128GB 3GB RAM 32GB 3GB RAM 64GB 3GB RAM
Display
Size (in)	5.5	5.1
Resolution (px)	1080 x 1920	1440 x 2560
Protection	-	Corning Gorilla Glass 4
Display Type	IPS LCD	Super AMOLED
Battery
Type	Li-Ion	Li-Ion
Charging	-	Fast charging 15W, Qi/PMA wireless charging - market dependent
Capcity (mAh)	3200	2550
Main Camera
Main Camera Type	Single	Single
Main Camera Properties	13 MP, f/2.2, PDAF	16 MP, f/1.9, 28mm (wide), 1/2.6", 1.12µm, AF, OIS
Main Camera Video	1080p@30fps	4K@30fps, 1080p@30/60fps, 720p@120fps, HDR, stereo sound rec., OIS, gyro-EIS
Main Camera Features	LED flash, HDR, panorama	LED flash, auto-HDR, panorama
Selfie Camera
Selfie Camera Type	Single	Single
Selfie Camera Properties	16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm	5 MP, f/1.9, 22mm (wide)
Selfie Camera Video	1080p@30fps	1440p@30fps
Selfie Camera Features	-	Dual video call, Auto-HDR
Comms
WLAN	Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth	4.2, A2DP	4.1, A2DP, LE, aptX
GPS	+	+
NFC	-	+
Radio	No	No
USB	microUSB 2.0, USB On-The-Go	microUSB 2.0, USB On-The-Go
Sound
Loudspeaker	+	+
3.5mm jack	+	+
Features
Sensors	Fingerprint (front-mounted) accelerometer compass proximity	Fingerprint (front-mounted) SpO2 accelerometer barometer compass gyro heart rate proximity
Misc
Colors	Black Gold Rose Gold	Black Sapphire Gold Platinum White Pearl
Models	CPH1715	SM-G920
Infrared port	-	Yes
Talk time (h)	-	Up to 17 h (3G)
Music play (h)	-	49