Sony Xperia U (ST25a) vs Asus Zenfone 8 Flip (128GB)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Sony Xperia U vs Asus Zenfone 8 Flip phones, differences, pros, cons and full specifications. What's the better?

5/14/2021 4:01 PM, updated: 1/24/2023 7:02 AM

Compare Asus Zenfone 8 Flip X Sony Xperia U (ST25a) 05Points

Specifications Compare Models Pictures

3.5"
LED

480x854

5
MP

0.3mp

512MB
RAM

Dual-core

1320
mAh

(Removable)

34Points Asus Zenfone 8 Flip (128GB) Compare Sony Xperia U X

Specifications Compare Models Pictures

6.67"
AMOLED

1080x2400

64
MP

64mp

8GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Asus Zenfone 8 Flip (128GB)

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!

5 Advantages Sony Xperia U (ST25a)	vs	34 Advantages Asus Zenfone 8 Flip (128GB)
+110 grams (3.85 ounces)54% Lighter	vs	169 grams (5.92 ounces)
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores	vs	Type-C reversible connector
+FM (RDS)Advantage The radio lets you listen to your songs and sports in general	vs	Not supported
+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	+2.84GHz 64bit Octa-core (5nm)4 times More powerful processor, you can open your applications faster
512MB LPDDR2	vs	+8GB LPDDR515 times More RAM memory. Typically more responsive and better for multitasking.
8GB (4GB available)	vs	+128GB (107GB available)26 times More internal storage for applications and files
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
12 millimeters (0.47 inches)	vs	+8.9 millimeters (0.35 inches)35% Thinner
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
TFT LED-Backlit LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
Not supported	vs	+HDR10+Advantage The HDR10+ display provides vibrant colors and more details
60Hz	vs	+90Hz50% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
480x854 pixels	vs	+1080x2400 pixels5 times Higher resolution screen
280 PPI	vs	+395 PPI41% Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.5"	vs	+6.67"91% Larger screen
(back) 5MP	vs	+(triple camera) 64MP + 12MP + 8MP16 times Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
Not supported	vs	+HDR photo/video on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
(front) 0.3MP	vs	+(triple front camera) 64MP + 12MP + 8MP273 times Higher resolution secondary camera to take pictures and selfies
HD (1280x720)	vs	+8K UHD (7680x4320)35 times More image quality for recording videos with the primary camera
(front) VGA (640x480)	vs	+(front) 8K UHD (7680x4320)107 times More image quality for recording videos with the secondary camera
Android 4.0.4 Ice Cream Sandwich ICS	vs	+Android 13Advantage Android 13 is newer and safer
3G HSUPA	vs	+5G SA/NSAAdvantage The 5G SA/NSA network is newer and faster
(3G HSUPA) 14.4 Mbps	vs	+(5G SA/NSA) 2000 Mbps138 times Faster for surfing the internet and download files
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (under display)Advantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
1320 mAh	vs	+5000 mAh3 times 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) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac/ax [wifi6]Advantage WiFi 802.11 a/b/g/n/ac/ax [wifi6] is newer and faster
2.1 + A2DP	vs	+5.2 + A2DP/LEAdvantage Bluetooth 5.2 + A2DP/LE is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0, USB OTG On-The-Go	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet
Not supported	vs	+IP68 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

16 Common items in both devices

16 million

Autofocus / PDAF: phase detection autofocus

EIS: Digital stabilization

Capacitive

Multitouch

Accelerometer

Ambient light sensor

+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 (ST25a)	Asus Zenfone 8 Flip (128GB)
Change model		Choose the model
Model	Xperia U (ST25a)	Zenfone 8 Flip (128GB)
Other model names	Sony Xperia U ST25, Sony Kumquat	Asus Zenfone 8 (ZS672KS)
Country or region available	(Latin America), Brazil, Canada, USA	(Global, International)
Brand	Sony	Asus
Release date	5/7/2012	5/13/2021, Announced: 5/12/2021
Depth	12 millimeters (0.47 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	54 x 112 millimeters (2.13 x 4.41 in)	68.5 x 148 millimeters (2.7 x 5.83 in)
Weight	110 grams (3.85 ounces)	169 grams (5.92 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Display type	TFT LED-Backlit LCD	Super AMOLED
Screen size	3.5" inches	6.67" inches
Screen-to-body ratio	~55.8% (screen-to-body ratio)	~105.9% (screen-to-body ratio)
Display resolution	480x854 pixels (16:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch 4-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	280 PPI	395 PPI
Colors	16 million	16 million
Scratch-resistant glass	Scratch-resistant glass	Gorilla Glass 6
Refresh rate	60Hz	90Hz
Display features	Not supported	700nits[typ], 1000nits[peak] HDR10+ Always-On Display
🤖 Operating System
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
System version	Android 2.3.7 Gingerbread	Android 11
Firmware update	Android 4.0.4 Ice Cream Sandwich ICS	Android 13
User Interface	feature not registered	ZenUI 8 / 9 / 10
⚙️ Processor
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Chipset	32bit: ST-Ericsson NovaThor U8500 (45nm)	64bit: Qualcomm Snapdragon 888 (SM8350) (5nm)
CPU	Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core)	Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core)
GPU graphical controller	ARM Mali-400 MP1	Qualcomm Adreno 660 (840MHz)
Performance (benchmark)	feature not registered	AnTuTu: 675851 (v8), 797848(v9) Geekbench: 3673 (v5.1) GFXBench: 62fps (ES 3.1 onscreen)
💽 Memory and storage
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
RAM memory	512MB LPDDR2	8GB LPDDR5
Internal storage	8GB (4GB available)	128GB (107GB available) UFS 3.1
External storage	Not supported	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated 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	2000/1024 Mbps
Network technology	2G, 3G	2G, 3G, 4G, 5G
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 850/1900/2100	UMTS 800/850/900/1700/1900/2100
Primary 4G network	Not supported	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE
Primary 5G network	Not supported	SA/NSA (1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 800/850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE
Secondary data network	Not supported	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Back camera (main camera)	5 megapixels	(triple camera) 64 megapixels 12MP ultrawide f/2.2112°14mm1/2.55"1.4µmPDAF 8MP telephoto f/2.480mmPDAF3x-optical-zoom
Main camera resolution	2592x1944 pixels	10120x6328 pixels
Video recording (primary)	HD (1280x720) 30 fps	8K UHD (7680x4320) 24 fps
Flash	LED flash	Dual-LED flash
Focal aperture	feature not registered	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/1.73" inches
Pixel size	feature not registered	0.8µm pixel
Autofocus	Autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	Not supported	HDR photo/video on both cameras
Camera extras	feature not registered	4K@120fps 1080p@240fps 720p@480fps
📸 Front camera
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Front camera (secondary)	0.3 megapixels	Uses the back motorized camera (flip-up/rotating)
Front camera resolution	640x480 pixels	10120x6328 pixels
Video recording (secondary)	VGA (640x480)	8K UHD (7680x4320)
Front flash	Not supported	Dual-LED flash
Focal aperture	feature not registered	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/1.73" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Loudspeaker	Supported	Stereo sound 24-bit/192kHz
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.263, H.264, WMV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, eAAC+, WMA, WAV	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	3.5mm jack	Type-C reversible connector
TV output	Not supported	USB Type-C (reversible)
Bluetooth	2.1 + A2DP	5.2 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
Battery type	Li-Ion: lithium-ion (Removable) BA600	LiPo: li-ion polymer (Non removable)
Battery capacity	1320 mAh	5000 mAh
Charger, watts	Wired charging	30W Wired fast charging 5W Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	5.6 hours	feature not registered
Standby	472 hours (19.7 days)	feature not registered
➕ Other features
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
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: Galactic Black, Glacier Silver
☢️ Radiation rate
	Sony Xperia U (ST25a)	Asus Zenfone 8 Flip (128GB)
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