Sony Xperia U (ST25i) vs Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)

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Side by side comparison between Sony Xperia U vs Asus Zenfone 4 Selfie Pro phones, differences, pros, cons and full specifications. What's the better?

2/4/2018 8:32 PM, updated: 11/10/2021 4:36 PM

Compare Asus Zenfone 4 Selfie Pro X Sony Xperia U (ST25i) 03Points

Specifications Compare Models Pictures

3.5"
LED

480x854

5
MP

0.3mp

512MB
RAM

Dual-core

1320
mAh

(Removable)

24Points Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) Compare Sony Xperia U X

Specifications Compare Models Pictures

5.5"
AMOLED

1080x1920

16
MP

12mp

4GB
RAM

Octa-core

3000
mAh

(Non removable)

What's the better phone? Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

3 Advantages Sony Xperia U (ST25i)	vs	24 Advantages Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
+110 grams (3.85 ounces)34% Lighter	vs	147 grams (5.15 ounces)
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
1GHz 32bit Dual-core (45nm)	vs	+2GHz 64bit Octa-core3 times More powerful processor, you can open your applications faster
512MB LPDDR2	vs	+4GB LPDDR37 times More RAM memory. Typically more responsive and better for multitasking.
8GB (4GB available)	vs	+64GB (54GB available)13 times More internal storage for applications and files
Not supported	vs	+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards
12 millimeters (0.47 inches)	vs	+6.85 millimeters (0.27 inches)75% Thinner
TFT LED-Backlit LCD	vs	+AMOLEDAdvantage AMOLED display is brighter and more vivid
480x854 pixels	vs	+1080x1920 pixels4 times Higher resolution screen
280 PPI	vs	+401 PPI43% Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.5"	vs	+5.5"57% Larger screen
(back) 5MP	vs	+(back) 16MP2 times Higher resolution main camera
LED flash	vs	+Dual-LED on main camera and LED on front cameraAdvantage The Dual-LED on main camera and LED on front camera helps in dark places or in low light
Not supported	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
(front) 0.3MP	vs	+(dual front camera) 12MP + 8MP64 times Higher resolution secondary camera to take pictures and selfies
HD (1280x720)	vs	+4K UHD (3840x2160)8 times More image quality for recording videos with the primary camera
(front) VGA (640x480)	vs	+(front) 4K UHD (3840x2160)26 times More image quality for recording videos with the secondary camera
Android 4.0.4 Ice Cream Sandwich ICS	vs	+Android 7.0 NougatAdvantage Android 7.0 Nougat is newer and safer
3G HSUPA	vs	+4G LTEAdvantage The 4G LTE network is newer and faster
(3G HSUPA) 14.4 Mbps	vs	+(4G LTE) 150 Mbps9 times Faster for surfing the internet and download files
Not supported	vs	+Fingerprint sensorAdvantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
1320 mAh	vs	+3000 mAh127% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
1 slot (Single-SIM)	vs	+2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)Advantage You can have more mobile carriers/operators on the same device.
2.1 + A2DP	vs	+4.2 + A2DPAdvantage Bluetooth 4.2 + A2DP is newer and faster
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet

16 Common items in both devices

16 million

Only digital zoom

Autofocus / PDAF: phase detection autofocus

EIS: Digital stabilization

Capacitive

Multitouch

Accelerometer

+9 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Change model		Choose the model
Model	Xperia U (ST25i)	Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Other model names	Sony Xperia U ST25, Sony Kumquat	Asus Zenfone 4 Selfie Pro ZD552KL (64GB + 4GB RAM)
Country or region available	(Global, International)	Brazil, China, (Europe), Philippines, Hong Kong, India, Indonesia, Malaysia, Taiwan, (Global, International)
Brand	Sony	Asus
Release date	5/7/2012, Announced: 2/1/2012	9/14/2017
Depth	12 millimeters (0.47 inches)	6.85 millimeters (0.27 inches)
Size (width x height)	54 x 112 millimeters (2.13 x 4.41 in)	74.8 x 154 millimeters (2.94 x 6.06 in)
Weight	110 grams (3.85 ounces)	147 grams (5.15 ounces)
Build, materials	Plastic body, glass front	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Display type	TFT LED-Backlit LCD	AMOLED
Screen size	3.5" inches	5.5" inches
Screen-to-body ratio	~55.8% (screen-to-body ratio)	~72.4% (screen-to-body ratio)
Display resolution	480x854 pixels (16:9)	1080x1920 pixels
Touchscreen	Capacitive Multitouch 4-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	280 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Scratch-resistant glass	Gorilla Glass 5
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
System version	Android 2.3.7 Gingerbread	Android 7.0 Nougat
Firmware update	Android 4.0.4 Ice Cream Sandwich ICS	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Chipset	32bit: ST-Ericsson NovaThor U8500 (45nm)	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU	Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	ARM Mali-400 MP1	Qualcomm Adreno 506 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
RAM memory	512MB LPDDR2	4GB LPDDR3
Internal storage	8GB (4GB available)	64GB (54GB available) eMMC 5.1
External storage	Not supported	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	14.4/5.76 Mbps	150/50 Mbps
Network technology	2G, 3G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 900/2100	Global version: UMTS 850/900/2100 USA/Brazil version: UMTS 850/900/1700/1900/2100 Taiwan/Japan/Hong Kong version: UMTS 800/850/900/1900/2100
Primary 4G network	Not supported	LTE Cat4 Global version: LTE (Bands 1,3,5,7,8,20) TD-LTE (Bands 40) USA/Brazil version: LTE (Bands 1,2,3,4,5,7,8,12,17,28) Taiwan/Japan/Hong Kong version: LTE (Bands 1,3,5,7,8,18,19,26,28) TD-LTE (Bands 38,41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Back camera (main camera)	5 megapixels	16 megapixels
Main camera resolution	2592x1944 pixels	4608x3456 pixels
Video recording (primary)	HD (1280x720) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	Dual-LED on main camera and LED on front camera
Focal aperture	feature not registered	feature not registered
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	Autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	Not supported	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Front camera (secondary)	0.3 megapixels	(dual front camera) 12 megapixels 8MP 12mm120°
Front camera resolution	640x480 pixels	4000x3000 pixels
Video recording (secondary)	VGA (640x480)	4K UHD (3840x2160)
Front flash	Not supported	LED
Focal aperture	feature not registered	f/1.8 (aperture)
Focal length	feature not registered	25mm lens
Sensor size	feature not registered	1/2.55" inches
Pixel size	feature not registered	1.4µm pixel
🔉 Sound and multimedia
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.263, H.264, WMV	MP4, H.264, H.263
Audio formats	MP3, eAAC+, WMA, WAV	MP3, WAV, OGG, eAAC+, FLAC
🔌 Connectivity
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	2.1 + A2DP	4.2 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Battery type	Li-Ion: lithium-ion (Removable) BA600	LiPo: li-ion polymer (Non removable)
Battery capacity	1320 mAh	3000 mAh
Charger, watts	Wired charging	10W (5V/2A) Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	5.6 hours	30 hours (1.3 days)
Standby	472 hours (19.7 days)	feature not registered
➕ Other features
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, Flash player	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black, White • Exchangeable bottom caps: White, Black, Pink, Yellow • Sony Reality Display • Sony Mobile BRAVIA Engine • xLoud • 3D surround sound • WiFi hotspot • Java framework	• Colors: Rouge Red, Sunlight Gold, Deepsea Black • Metal body • ASUS ZenUI 4.0 • 2.5D screen glass • DTS sound enhancement • Hi-Res audio • 24-bit/192kHz audio • Slow motion 720p@120fps • Sony IMX362 sensor front camera • DuoPixel 24MP (2x12MP) front camera • Fast battery charging • VoLTE
☢️ Radiation rate
	Sony Xperia U (ST25i)	Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)	1.09W/kg (head), 0.93W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	1.62W/kg (head)	feature not registered