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Asus Zenfone Max ZC550KL

Asus Zenfone Selfie ZD551KL

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	HSDPA 850 / 900 / 1900 / 2100
	TD-SCDMA - India
4G Network	1, 3, 38, 39, 40, 41 - India	1, 2, 3, 5, 7, 8, 20 - Global
	1, 2, 3, 5, 7, 8, 20 - Global	1, 2, 3, 5, 6, 8, 9, 18, 19, 28 - Taiwan
		1, 2, 3, 4, 5, 7, 8, 17, 20 - USA
		1, 3 - India
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced	2015, August. Released 2016, January	2015, June. Released 2015, August
Status	Discontinued	Discontinued

Body
Dimensions	156 x 77.5 x 10.6 mm (6.14 x 3.05 x 0.42 in)	156.5 x 77.2 x 10.8 mm (6.16 x 3.04 x 0.43 in)
Weight	202 g (7.13 oz)	170 g (6.00 oz)
Build	Glass front (Gorilla Glass 4), plastic back, plastic frame	Glass front (Gorilla Glass 4), plastic back, plastic frame
SIM	Dual SIM (Micro-SIM, dual stand-by)	Dual SIM (Micro-SIM, dual stand-by)

Display
Type	IPS LCD	IPS LCD
Size	5.5 inches, 83.4 cm2 (~69.0% screen-to-body ratio)	5.5 inches, 82.6 cm2 (~68.3% screen-to-body ratio)
Resolution	720 x 1280 pixels, 16:9 ratio (~267 ppi density)	1080 x 1920 pixels, 16:9 ratio (~403 ppi density)
Protection	Corning Gorilla Glass 4	Corning Gorilla Glass 4, oleophobic coating

Platform
OS	Android 5.0.1 (Lollipop), upgradable to 6.0.1 (Marshmallow), ZenUI	Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI
Chipset	Qualcomm MSM8916 Snapdragon 410 (28 nm)	Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU	Quad-core 1.2 GHz Cortex-A53	Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU	Adreno 306	Adreno 405

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	8GB 2GB RAM, 16GB 2GB RAM	16GB 2GB RAM, 32GB 3GB RAM
	eMMC 4.5	eMMC 4.5

Main Camera
Modules	13 MP, f/2.0, Laser AF	13 MP, f/2.0, 28mm (wide), 1/3.0", Laser AF
Features	Dual-LED dual-tone flash, panorama, HDR	Dual-LED dual-tone flash, panorama, HDR
Video	1080p@30fps	1080p@30fps

Selfie Camera
Modules	5 MP, f/2.0	13 MP, f/2.2, 1/3.1", 1.12µm, AF
Features		Dual-LED dual-tone flash
Video		1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes

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

Features
Sensors	Accelerometer, proximity, compass	Accelerometer, gyro, proximity, compass

Battery
Type	Li-Po 5000 mAh, non-removable	Li-Po 3000 mAh, removable
Charging	Reverse wired
Stand-by	Up to 914 h (3G)
Talk time	Up to 38 h (3G)

Misc
Colors	Black, White	Pure White, Chic Pink, Aqua Blue
Models	Z010D, Z010DA	Z00UD, Z00UDH, Z00UDC, Z00UDB
Price	About 170 EUR	About 280 EUR

Tests
Performance	Basemark OS II 2.0: 624 Basemark X: 1844	Basemark OS II 2.0: 883 Basemark X: 4915
Display	Contrast ratio: 1093 (nominal), 2.068 (sunlight)	Contrast ratio: 928:1 (nominal), 1.680 (sunlight)
Camera	Compare PHOTO / Compare VIDEO
Loudspeaker	Voice 63dB / Noise 66dB / Ring 75dB	Voice 65dB / Noise 66dB / Ring 75dB
Audio quality	Noise -93.4dB / Crosstalk -95.2dB	Noise -92.1dB / Crosstalk -92.5dB
Battery (old)	Endurance rating 121h	Endurance rating 63h