Asus Zenfone 4 Selfie ZD553KL vs Asus Zenfone Selfie ZD551KL

Phones Images

PHONES
Phone Names	Asus Zenfone 4 Selfie ZD553KL	Asus Zenfone Selfie ZD551KL

Network
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands	HSDPA 850 / 900 / 2100 - Global, India, Indonesia	HSDPA 850 / 900 / 1900 / 2100
4G bands	1, 3, 5, 7, 8, 20, 40 - Global, India, Indonesia	1, 2, 3, 5, 7, 8, 20 - Global
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE
	1, 3, 5, 7, 8, 18, 19, 26, 28, 38, 41 - TW/JP/HK/PH/BR	1, 3 - India

Launch
Announced	2017, August. Released 2017, October	2015, June. Released 2015, August
Status	Discontinued	Discontinued

Body
Build	Glass front, aluminum back, aluminum frame	Glass front (Gorilla Glass 4), plastic back, plastic frame
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)
SIM	Nano-SIM + Nano-SIM	Dual SIM (Micro-SIM, dual stand-by)
Weight	144 g (5.08 oz)	170 g (6.00 oz)

Display
Protection	-	Corning Gorilla Glass 4, oleophobic coating
Resolution	720 x 1280 pixels, 16:9 ratio (~267 ppi density)	1080 x 1920 pixels, 16:9 ratio (~403 ppi density)
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)
Type	IPS LCD	IPS LCD

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

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

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

Sound
3.5mm jack	Yes	Yes
35mm jack	Yes	Yes
Loudspeaker	Yes	Yes

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

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

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