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Asus Zenfone 4 Selfie ZD553KL

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 / 2100 - Global, India, Indonesia	HSDPA 850 / 900 / 1900 / 2100
	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - TW/JP/HK/PH/BR
4G Network	1, 3, 5, 7, 8, 20, 40 - Global, India, Indonesia	1, 2, 3, 5, 7, 8, 20 - Global
	1, 3, 5, 7, 8, 18, 19, 26, 28, 38, 41 - TW/JP/HK/PH/BR	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	2017, August	2015, June. Released 2015, August
Status	Available. Released 2017, October	Discontinued

Body
Dimensions	155.7 x 75.9 x 7.9 mm (6.13 x 2.99 x 0.31 in)	156.5 x 77.2 x 10.8 mm (6.16 x 3.04 x 0.43 in)
Weight	144 g (5.08 oz)	170 g (6.00 oz)
Build	Glass front, aluminum back, aluminum frame	Glass front (Gorilla Glass 4), plastic back, plastic frame
SIM	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Micro-SIM, dual stand-by)

Display
Type	IPS LCD	IPS LCD
Size	5.5 inches, 83.4 cm2 (~70.6% 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, oleophobic coating

Platform
OS	Android 7.0 (Nougat), upgradable to Android 8.1 (Oreo), ZenUI 5	Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI
Chipset	Qualcomm MSM8937 Snapdragon 430 (28 nm)	Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU	Octa-core 1.4 GHz Cortex-A53	Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU	Adreno 505	Adreno 405

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	64GB 4GB RAM	16GB 2GB RAM, 32GB 3GB RAM
	eMMC 5.1	eMMC 4.5

Main Camera
Modules	16 MP, 26mm (wide), PDAF	13 MP, f/2.0, 28mm (wide), 1/3.0", Laser AF
Features	LED flash, panorama, HDR	Dual-LED dual-tone flash, panorama, HDR
Video	1080p@30fps	1080p@30fps

Selfie Camera
Modules	20 MP, f/2.0, 31mm (standard), 1/2.8", 1.0µm 8 MP, 12mm (ultrawide)	13 MP, f/2.2, 1/3.1", 1.12µm, AF
Features	LED flash, panorama, HDR	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	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, GALILEO	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	Fingerprint (front-mounted), accelerometer, gyro, proximity, compass	Accelerometer, gyro, proximity, compass

Battery
Type	Li-Ion 3000 mAh, non-removable	Li-Po 3000 mAh, removable

Misc
Colors	Deepsea Black, Mint Green, Rose Pink, Sunlight Gold	Pure White, Chic Pink, Aqua Blue
Models	X00LD	Z00UD, Z00UDH, Z00UDC, Z00UDB
Price	About 250 EUR	About 280 EUR

Tests
Performance		Basemark OS II 2.0: 883 Basemark X: 4915
Display		Contrast ratio: 928:1 (nominal), 1.680 (sunlight)
Loudspeaker		Voice 65dB / Noise 66dB / Ring 75dB
Audio quality		Noise -92.1dB / Crosstalk -92.5dB
Battery (old)		Endurance rating 63h