Sony Xperia U (ST25i) vs Sony Xperia X Compact (F5321)
Side by side comparison between Sony Xperia U vs Sony Xperia X Compact phones, differences, pros, cons and full specifications. What's the better?
,
3.5"
LED
LED
480x854
5
MP
MP
0.3mp
512MB
RAM
RAM
Dual-core
1320
mAh
mAh
(Removable)
vs
4.6"
IPS
IPS
720x1280
23
MP
MP
5mp
3GB
RAM
RAM
Hexa-core
2700
mAh
mAh
(Non removable)
What's the better phone? Sony Xperia X Compact (F5321)
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!
2 Advantages 
26 Advantages | 16 Common items in both devices |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus |
| 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 Clear highlight📱 Model features | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Model | Xperia U (ST25i) | Xperia X Compact (F5321) |
| Other model names | Sony Xperia U ST25, Sony Kumquat | Sony Xperia X Compact Single-Sim, Sony Kugo SS |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Sony | Sony |
| Release date | 5/7/2012, Announced: 2/1/2012 | 9/25/2016 |
| Depth | 12 millimeters (0.47 inches) | 9.5 millimeters (0.37 inches) |
| Size (width x height) | 54 x 112 millimeters (2.13 x 4.41 in) | 65 x 129 millimeters (2.56 x 5.08 in) |
| Weight | 110 grams (3.85 ounces) | 135 grams (4.73 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Display type | TFT LED-Backlit LCD | TFT IPS LCD |
| Screen size | 3.5" inches | 4.6" inches |
| Screen-to-body ratio | ~55.8% (screen-to-body ratio) | ~69.6% (screen-to-body ratio) |
| Display resolution | 480x854 pixels (16:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch 4-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 280 PPI | 319 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Scratch-resistant glass | Gorilla Glass 4 |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| System version | Android 2.3.7 Gingerbread | Android 6.0.1 Marshmallow |
| Firmware update | Android 4.0.4 Ice Cream Sandwich ICS | Android 7.0 Nougat |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Chipset | 32bit: ST-Ericsson NovaThor U8500 (45nm) | 64bit: Qualcomm Snapdragon 650 MSM8956 (28nm) |
| CPU | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) | Hexa-core, 2 processors: 2x 1.8GHz ARM Cortex-A72 (Dual-core) 4x 1.4GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | ARM Mali-400 MP1 | Qualcomm Adreno 510 600Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| RAM memory | 512MB LPDDR2 | 3GB LPDDR3 |
| Internal storage | 8GB (4GB available) | 32GB (22GB available) |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 14.4/5.76 Mbps | 300/50 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 | UMTS 800/850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat6 700/800/850/900/1700/1800/1900/2100/2600 (Bands 1,2,3,4,5,7,8,12,17,19,20,26,28) TD-LTE 1900/2300/2500/2600 (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Back camera (main camera) | 5 megapixels | 23 megapixels |
| Main camera resolution | 2592x1944 pixels | 5536x4152 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | Full HD (1920x1080) 60 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/2.3" inches |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | Not supported | HDR photo/video only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Front camera (secondary) | 0.3 megapixels | 5 megapixels |
| Front camera resolution | 640x480 pixels | 2592x1944 pixels |
| Video recording (secondary) | VGA (640x480) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM (RDS) | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.263, H.264, WMV | MP4, H.265, H.264, H.263, XviD |
| Audio formats | MP3, eAAC+, WMA, WAV | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | USB 2.0 Type-C reversible connector |
| 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 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Supported | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Fingerprint sensor Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| Battery type | Li-Ion: lithium-ion (Removable) BA600 | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 1320 mAh | 2700 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 5.6 hours | 14 hours |
| Standby | 472 hours (19.7 days) | 750 hours (31.3 days) |
➕ Other features | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| 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: Black, White, Mist Blue • USB OTG On-The-Go • Triluminos 2.5D curved display • Oleophobic coating • Fingerprint sensor • PDAF on back camera • Sony Exmor RS on back camera • Sony Exmor R on front camera • Fast battery charging • Quick Charge 3.0 • Sony ClearAudio+ • PS4 integration |
☢️ Radiation rate | ||
| Sony Xperia U (ST25i) | Sony Xperia X Compact (F5321) | |
| 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 |