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Asus Zenfone Selfie ZD551KL

Asus Zenfone 4 Selfie ZD553KL

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 / 2100 - Global, India, Indonesia
		HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - TW/JP/HK/PH/BR
4G Network	1, 2, 3, 5, 7, 8, 20 - Global	1, 3, 5, 7, 8, 20, 40 - Global, India, Indonesia
	1, 2, 3, 5, 6, 8, 9, 18, 19, 28 - Taiwan	1, 3, 5, 7, 8, 18, 19, 26, 28, 38, 41 - TW/JP/HK/PH/BR
	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, June. Released 2015, August	2017, August
Status	Discontinued	Available. Released 2017, October

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

Display
Type	IPS LCD	IPS LCD
Size	5.5 inches, 82.6 cm2 (~68.3% screen-to-body ratio)	5.5 inches, 83.4 cm2 (~70.6% screen-to-body ratio)
Resolution	1080 x 1920 pixels, 16:9 ratio (~403 ppi density)	720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Protection	Corning Gorilla Glass 4, oleophobic coating

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

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

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

Selfie Camera
Modules	13 MP, f/2.2, 1/3.1", 1.12µm, AF	20 MP, f/2.0, 31mm (standard), 1/2.8", 1.0µm 8 MP, 12mm (ultrawide)
Features	Dual-LED dual-tone flash	LED flash, panorama, HDR
Video	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes

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

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

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

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