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Samsung Galaxy A8

Asus Zenfone 2 ZE551ML

Network
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
		TD-SCDMA - China & India
4G Network	1, 3, 5, 7, 8, 20	1, 2, 3, 4, 5, 8, 9, 18, 19, 28 - Taiwan
		1, 2, 3, 4, 5, 7, 8, 20 - Global
		1, 2, 3, 4, 5, 7, 8, 17, 20 - US
		1, 3, 38, 39, 40, 41 - China & India
Speed	HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced	2015, July. Released 2015, August	2015, January. Released 2015, March
Status	Discontinued	Discontinued

Body
Dimensions	158 x 76.8 x 5.9 mm (6.22 x 3.02 x 0.23 in)	152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in)
Weight	151 g (5.33 oz)	170 g (6.00 oz)
Build	Glass front (Gorilla Glass 4), plastic back, aluminum frame	Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM	Nano-SIM	Dual SIM (Micro-SIM, dual stand-by)

Display
Type	Super AMOLED	IPS LCD
Size	5.7 inches, 89.6 cm2 (~73.8% screen-to-body ratio)	5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
Resolution	1080 x 1920 pixels, 16:9 ratio (~386 ppi density)	1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Protection	Corning Gorilla Glass 4	Corning Gorilla Glass 3

Platform
OS	Android 5.1.1 (Lollipop), upgradable to 6.0 (Marshmallow)	Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Chipset	Qualcomm MSM8939 Snapdragon 615 (28 nm)	Intel Atom Z3580 (4 GB RAM model) Intel Atom Z3560 (2 GB RAM model)
CPU	Octa-core (4x1.8 GHz Cortex-A53 & 4x1.3 GHz Cortex-A53)	Quad-core 2.3 GHz (4 GB RAM model) Quad-core 1.8 GHz (2 GB RAM model)
GPU	Adreno 405	PowerVR G6430

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	32GB 2GB RAM	16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM
	eMMC 4.5

Main Camera
Modules	16 MP, f/1.9, 31mm (standard), AF	13 MP, f/2.0, AF
Features	LED flash, panorama, HDR	Dual-LED dual-tone flash, panorama, HDR
Video	1080p@30fps	1080p@30fps

Selfie Camera
Modules	5 MP, f/1.9, 23mm (wide)	5 MP, f/2.0
Video	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Bluetooth	4.1, A2DP, EDR, LE	4.0, A2DP, EDR
Positioning	GPS, GLONASS/ BDS (market dependant)	GPS, GLONASS
NFC	Yes	Yes
Infrared port	No	No
Radio	FM radio, RDS, recording	FM radio, RDS
USB	microUSB 2.0	microUSB 2.0, OTG

Features
Sensors	Fingerprint (front-mounted), accelerometer, proximity, compass	Accelerometer, gyro, proximity, compass
	ANT+

Battery
Type	Li-Ion 3050 mAh, non-removable	Li-Po 3000 mAh, non-removable
Charging		18W wired, 60% in 40 min (advertised)
Talk time	Up to 17 h (3G)
Music play	Up to 51 h

Misc
Colors	Pearl White, Midnight Black, Champagne Gold	Osmium Black, Sheer Gold, Glacier Gray, Glamor Red, Ceramic White
SAR EU	0.32 W/kg (head)     0.55 W/kg (body)	0.35 W/kg (head)
Models	SM-A8000, SM-A800F	Z00AD, Z00A
Price	About 250 EUR	About 300 EUR

Tests
Performance	Basemark OS II 2.0: 1089 Basemark X: 8838	Basemark OS II 2.0: 1090 Basemark X: 12565
Display	Contrast ratio: Infinite (nominal), 3.859 (sunlight)
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	Voice 66dB / Noise 66dB / Ring 75dB	Voice 62dB / Noise 61dB / Ring 67dB
Audio quality	Noise -89.3dB / Crosstalk -53.8dB
Battery (old)	Endurance rating 98h	Endurance rating 59h