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Asus Zenfone 3 ZE552KL

Asus Zenfone 2 ZE551ML

Network
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network	HSDPA 850 / 900 / 1900 / 2100 - Global	HSDPA 850 / 900 / 1900 / 2100
	HSDPA 850 / 900 / 1900 / 2100 / 800 - Taiwan	TD-SCDMA - China & India
	HSDPA 850 / 900 / 2100 - India
	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA/Brazil
4G Network	1, 2, 3, 5, 7, 8, 20 - Global	1, 2, 3, 4, 5, 8, 9, 18, 19, 28 - Taiwan
	1, 2, 3, 5, 7, 8, 18, 19, 26, 28, 38, 39, 40, 41 - Taiwan	1, 2, 3, 4, 5, 7, 8, 20 - Global
	1, 3, 5, 8, 40 - India	1, 2, 3, 4, 5, 7, 8, 17, 20 - US
	1, 2, 3, 4, 5, 7, 8, 17, 28 - USA/Brazil	1, 3, 38, 39, 40, 41 - China & India
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps (Global), LTE (2CA) Cat6 300/50 Mbps (Taiwan)	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced	2016, May. Released 2016, August	2015, January. Released 2015, March
Status	Discontinued	Discontinued

Body
Dimensions	152.6 x 77.4 x 7.7 mm (6.01 x 3.05 x 0.30 in)	152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in)
Weight	155 g (5.47 oz)	170 g (6.00 oz)
Build	Glass front (Gorilla Glass 3), glass back (Gorilla Glass 3), aluminum frame	Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM	Hybrid Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by)	Dual SIM (Micro-SIM, dual stand-by)

Display
Type	Super IPS+	IPS LCD
Size	5.5 inches, 83.4 cm2 (~70.6% screen-to-body ratio)	5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
Resolution	1080 x 1920 pixels, 16:9 ratio (~401 ppi density)	1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Protection	Corning Gorilla Glass 3	Corning Gorilla Glass 3

Platform
OS	Android 6.0.1 (Marshmallow), upgradable to 7.0 (Nougat), ZenUI 3	Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Chipset	Qualcomm MSM8953 Snapdragon 625 (14 nm)	Intel Atom Z3580 (4 GB RAM model) Intel Atom Z3560 (2 GB RAM model)
CPU	Octa-core 2.0 GHz Cortex-A53	Quad-core 2.3 GHz (4 GB RAM model) Quad-core 1.8 GHz (2 GB RAM model)
GPU	Adreno 506	PowerVR G6430

Memory
Card slot	microSDXC (uses shared SIM slot)	microSDXC (dedicated slot)
Internal	32GB 3GB RAM, 64GB 4GB RAM	16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM
	eMMC 5.1

Main Camera
Modules	16 MP, f/2.0, PDAF, Laser AF, 3-axis OIS	13 MP, f/2.0, AF
Features	Dual-LED dual-tone flash, panorama, HDR	Dual-LED dual-tone flash, panorama, HDR
Video	4K@30fps	1080p@30fps

Selfie Camera
Modules	8 MP, f/2.0	5 MP, f/2.0
Video	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes
	24-bit/192kHz audio

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Bluetooth	4.2, A2DP, EDR, LE	4.0, A2DP, EDR
Positioning	GPS, GLONASS	GPS, GLONASS
NFC	No	Yes
Infrared port	No	No
Radio	FM radio	FM radio, RDS
USB	USB Type-C 2.0, OTG	microUSB 2.0, OTG

Features
Sensors	Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass	Accelerometer, gyro, proximity, compass

Battery
Type	Li-Ion 3000 mAh, non-removable	Li-Po 3000 mAh, non-removable
Charging		18W wired, 60% in 40 min (advertised)

Misc
Colors	Sapphire Black, Moonlight White, Shimmer Gold	Osmium Black, Sheer Gold, Glacier Gray, Glamor Red, Ceramic White
SAR EU		0.35 W/kg (head)
Models	Z012DB, Z012D, Z012DA, Z012DC, Z012S, Z012DE	Z00AD, Z00A
Price	About 330 EUR	About 300 EUR

Tests
Performance	Basemark OS II 2.0: 1205	Basemark OS II 2.0: 1090 Basemark X: 12565
Display	Contrast ratio: 1355 (nominal), 2.563 (sunlight)
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	Voice 65dB / Noise 70dB / Ring 76dB	Voice 62dB / Noise 61dB / Ring 67dB
Audio quality	Noise -86.6dB / Crosstalk -91.1dB
Battery (old)	Endurance rating 74h	Endurance rating 59h