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Sony Xperia U (ST25i) vs Samsung Galaxy S21 FE (SM-G9900 128GB)

Side by side comparison between Sony Xperia U vs Samsung Galaxy S21 FE phones, differences, pros, cons and full specifications. What's the better?

,
3.5"
LED

480x854

5
MP

0.3mp

512MB
RAM

Dual-core

1320
mAh

(Removable)

vs
35Points Samsung Galaxy S21 FE (SM-G9900 128GB) Compare Sony Xperia U X
6.4"
AMOLED

1080x2400

12.2
MP

32mp

8GB
RAM

Octa-core

4500
mAh

(Non removable)

What's the better phone? Samsung Galaxy S21 FE (SM-G9900 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!

Xperia U (ST25i)} 4 Advantages Sony Xperia U (ST25i) vs Galaxy S21 FE (SM-G9900 128GB)} 35 Advantages Samsung Galaxy S21 FE (SM-G9900 128GB)
+110 grams (3.85 ounces)61%
Lighter
vs177 grams (6.2 ounces)
+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily
vsLiPo: li-ion polymer (Non removable)
+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
vsType-C reversible connector
+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general
vsNot supported
1GHz 32bit Dual-core (45nm)vs+2.9GHz 64bit Octa-core (5nm)4 times
More powerful processor, you can open your applications faster
512MB LPDDR2vs+8GB LPDDR515 times
More RAM memory. Typically more responsive and better for multitasking.
8GB (4GB available)vs+128GB (97GB available)23 times
More internal storage for applications and files
12 millimeters (0.47 inches)vs+7.9 millimeters (0.31 inches)52%
Thinner
Plastic body, glass frontvs+Aluminum body, glass front, plastic backAdvantage
More resistant material
TFT LED-Backlit LCDvs+Dynamic AMOLEDAdvantage
Dynamic AMOLED display is brighter and more vivid
Not supportedvs+HDR10+Advantage
The HDR10+ display provides vibrant colors and more details
60Hzvs+120Hz100%
The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
480x854 pixelsvs+1080x2400 pixels5 times
Higher resolution screen
280 PPIvs+411 PPI47%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
3.5"vs+6.4"83%
Larger screen
(back) 5MPvs+(triple camera) 12.2MP + 12MP + 8MP5 times
Higher resolution main camera
Only digital zoomvs+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
EIS: Digital stabilizationvs+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
Not supportedvs+HDR photo/video on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
(front) 0.3MPvs+(front) 32MP103 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 ICSvs+Android 14Advantage
Android 14 is newer and safer
3G HSUPAvs+5G SA/NSAAdvantage
The 5G SA/NSA network is newer and faster
(3G HSUPA) 14.4 Mbpsvs+(5G SA/NSA) 2000 Mbps138 times
Faster for surfing the internet and download files
Not supportedvs+BarometerAdvantage
Sensors help you use the device
Not supportedvs+Face unlockAdvantage
Sensors help you use the device
Not supportedvs+Fingerprint sensor (under display)Advantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
1320 mAhvs+4500 mAh2 times
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supportedvs+Qi wireless chargingAdvantage
Wireless charging is another way to charge the battery.
1 slot (Single-SIM)vs+2 slots (Dual-SIM)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 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0, USB OTG On-The-Govs+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
Newer and faster USB version for transferring photos, mp3 or data.
MicroUSB 2.0, USB OTG On-The-Govs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.
HTML, XHTML, Flash playervs+HTML, XHTML, HTML5Advantage
Better sites viewing on the internet
Not supportedvs+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

12 Common items in both devices
16 million
LED flash
Autofocus / PDAF: phase detection autofocus
Capacitive
Multitouch
Accelerometer
Ambient light sensor
+5 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 Clear highlight

📱 Model features

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
ModelXperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Other model namesSony Xperia U ST25, Sony KumquatGalaxy S21 FE 5G SM-G9900 Dual-SIM (Exynos)
Country or region available(Global, International)
(Global, International)
China
China
BrandSonySamsung
Release date5/7/2012, Announced: 2/1/20121/7/2022, Announced: 1/4/2022
Depth12 millimeters (0.47 inches)7.9 millimeters (0.31 inches)
Size (width x height)54 x 112 millimeters (2.13 x 4.41 in)74.5 x 155.7 millimeters (2.93 x 6.13 in)
Weight110 grams (3.85 ounces)177 grams (6.2 ounces)
Build, materialsPlastic body, glass frontAluminum body, glass front, plastic back
Protection against water and othersNot supportedIP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant

📲 Display

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Display typeTFT LED-Backlit LCDDynamic AMOLED
Screen size3.5" inches6.4" inches
Screen-to-body ratio~55.8% (screen-to-body ratio)~85.3% (screen-to-body ratio)
Display resolution480x854 pixels (16:9)1080x2400 pixels (20:9)
TouchscreenCapacitive Multitouch 4-pointsCapacitive Multitouch 10-points
Pixel density (dot pitch)280 PPI411 PPI
Colors16 million16 million
Scratch-resistant glassScratch-resistant glassGorilla Glass Victus
Refresh rate60Hz120Hz
Display featuresNot supported1300nits[peak]
HDR10+
Always-On Display

🤖 Operating System

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
System versionAndroid 2.3.7 GingerbreadAndroid 12
Firmware updateAndroid 4.0.4 Ice Cream Sandwich ICSAndroid 14
User Interfacefeature not registeredOne UI 4.1 / 5.1 / 6.0

⚙️ Processor

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Chipset32bit: ST-Ericsson NovaThor U8500 (45nm)64bit: Samsung Exynos 2100 (5nm)
CPUDual-core, 1 processor:
2x 1GHz ARM Cortex-A9 (Dual-core)
Octa-core, 3 processors:
1x 2.9GHz ARM Cortex-X1 (Single-core)
3x 2.8GHz ARM Cortex-A78 (Triple-core)
4x 2.2GHz ARM Cortex-A55 (Quad-core)
GPU graphical controllerARM Mali-400 MP1ARM Mali-G78 MP14 (854MHz)
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
RAM memory512MB LPDDR28GB LPDDR5
Internal storage8GB (4GB available)128GB (97GB available)
UFS 3.1
External storageNot supportedNot supported

📶 Mobile networks

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
SIM card1 slot (Single-SIM)
Standard mini-SIM (2FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum Download / Upload14.4/5.76 Mbps2000/1024 Mbps
Network technology2G, 3G2G, 3G, 4G, 5G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900CDMA 800, GSM 850/900/1800/1900
Primary 3G networkUMTS 900/2100CDMA2000 1xEV-DO
UMTS 850/900/1900/2100
Primary 4G networkNot supportedLTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28)
TD-LTE (34, 38, 39, 40, 41)
VoLTE
Primary 5G networkNot supportedSA/NSA/Sub6 (1, 3, 5, 8, 28, 41, 78, 79)
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPAGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedUMTS 850/900/1900/2100
Secondary 4G networkNot supportedLTE Cat20 (1, 3, 3, 4, 5, 7, 8, 12, 20, 28)
TD-LTE (34, 38, 39, 40, 41)
VoLTE
Secondary data networkNot supportedGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA

📷 Camera

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Back camera (main camera)5 megapixels(triple camera)
12.2 megapixels
12MP ultrawide f/2.2123°13mm1/3"1.12µm
8MP telephoto f/2.476mm1/4.5"1.0µmPDAFOIS3x-optical-zoom
Main camera resolution2592x1944 pixels4032x3024 pixels
Video recording (primary)HD (1280x720) 30 fps4K UHD (3840x2160) 60 fps
FlashLED flashLED flash
Focal aperturefeature not registeredf/1.8 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/1.76" inches
Pixel sizefeature not registered1.8µm pixel
AutofocusAutofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationOIS: Optical stabilization
ZoomOnly digital zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedSupported
HDRNot supportedHDR photo/video on both cameras
Camera extrasfeature not registered4K@30/60fps
1080p@30/60fps
1080p@240fps (slow motion)
720p@960fps (slow motion)

📸 Front camera

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Front camera (secondary)0.3 megapixels32 megapixels
Front camera resolution640x480 pixels6528x4896 pixels
Video recording (secondary)VGA (640x480)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturefeature not registeredf/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.74" inches
Pixel sizefeature not registered0.8µm pixel

🔉 Sound and multimedia

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
LoudspeakerSupportedStereo sound
32-bit/384kHz
Dolby Atmos
Tuned by AKG
Active noise cancellation2 microphones or more2 microphones or more
RadioFM (RDS)Not supported
TVNot supportedNot supported
Video formatsMP4, H.263, H.264, WMVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, eAAC+, WMA, WAVMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
USBMicroUSB 2.0, USB OTG On-The-GoUSB 3.2 Type-C, USB OTG On-The-Go
Audio output3.5mm jackType-C reversible connector
TV outputNot supportedUSB Type-C SlimPort®
Bluetooth2.1 + A2DP5.0 + A2DP/LE
WiFi802.11 b/g/n [wifi4] (2.4GHz)802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNASupportedSupported
GPSA-GPS, GeoTaggingA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCNot supportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
SensorsAccelerometer
Ambient light sensor
Compass
Proximity sensor
Accelerometer
Ambient light sensor
Barometer
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Battery typeLi-Ion: lithium-ion (Removable)
BA600
LiPo: li-ion polymer (Non removable)
Battery capacity1320 mAh4500 mAh
Charger, wattsWired charging25W Wired fast charging
Reverse charging by cable
USB Power Delivery 3.0
Inductive / wireless chargingNot supported15W Qi wireless charging
4.5W Reverse wireless charging
Talk time autonomy5.6 hoursfeature not registered
Standby472 hours (19.7 days)feature not registered

➕ Other features

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 128GB)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, Flash playerHTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot 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: Graphite, White, Lavender, Olive

☢️ Radiation rate

Sony Xperia U (ST25i)Galaxy S21 FE (SM-G9900 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)0.674W/kg (head), 1.501W/kg (body)
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