Sony Xperia U (ST25i) vs Samsung Galaxy 551 (GT-i5510M)
Side by side comparison between Sony Xperia U vs Samsung Galaxy 551 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
3.2"
TFT
TFT
240x400
3.1
MP
MP
512MB
RAM
RAM
Single-core
1200
mAh
mAh
(Removable)
What's the better phone? Sony Xperia U (ST25i)
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!
20 Advantages 
2 Advantages | 20 Common items in both devices |
| 512MB LPDDR2 / 512MB |
| 16 million |
| Only digital zoom |
| Autofocus |
| 3G HSUPA |
| Capacitive |
| Multitouch |
| +13 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 551 (GT-i5510M) | |
| Model | Xperia U (ST25i) | Galaxy 551 (GT-i5510M) |
| Other model names | Sony Xperia U ST25, Sony Kumquat | Samsung Galaxy i5510M, Samsung Callisto |
| Country or region available |  (Global, International) |   (Latin America), Brazil |
| Brand | Sony | Samsung |
| Release date | 5/7/2012, Announced: 2/1/2012 | 11/1/2010 |
| Depth | 12 millimeters (0.47 inches) | 15.2 millimeters (0.6 inches) |
| Size (width x height) | 54 x 112 millimeters (2.13 x 4.41 in) | 55 x 111 millimeters (2.17 x 4.37 in) |
| Weight | 110 grams (3.85 ounces) | 117 grams (4.1 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Display type | TFT LED-Backlit LCD | TFT LCD |
| Screen size | 3.5" inches | 3.2" inches |
| Screen-to-body ratio | ~55.8% (screen-to-body ratio) | ~47.7% (screen-to-body ratio) |
| Display resolution | 480x854 pixels (16:9) | 240x400 pixels |
| Touchscreen | Capacitive Multitouch 4-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 280 PPI | 146 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Scratch-resistant glass | Not supported |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| System version | Android 2.3.7 Gingerbread | Android 2.2 Froyo |
| Firmware update | Android 4.0.4 Ice Cream Sandwich ICS | Android 2.3.6 Gingerbread |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Chipset | 32bit: ST-Ericsson NovaThor U8500 (45nm) | 32bit: Qualcomm Snapdragon S1 MSM7227 (65nm) |
| CPU | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) | Single-core, 1 processor: 1x 600MHz ARM1136EJ-S (Single-core) |
| GPU graphical controller | ARM Mali-400 MP1 | Qualcomm Adreno 200 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| RAM memory | 512MB LPDDR2 | 512MB |
| Internal storage | 8GB (4GB available) | 512MB (173MB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 14.4/5.76 Mbps | 7.2 Mbps |
| Network technology | 2G, 3G | 2G, 3G |
| 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 850/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA | CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA |
| 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) | Galaxy 551 (GT-i5510M) | |
| Back camera (main camera) | 5 megapixels | 3.1 megapixels |
| Main camera resolution | 2592x1944 pixels | 2048x1536 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | QVGA (320x240) 15 fps |
| Flash | LED flash | 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 |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Not supported |
| Image stabilization | EIS: Digital stabilization | Not supported |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Front camera (secondary) | 0.3 megapixels | Not supported |
| Front camera resolution | 640x480 pixels | Not supported |
| Video recording (secondary) | VGA (640x480) | Not supported |
| 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) | Galaxy 551 (GT-i5510M) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM (RDS) | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.263, H.264, WMV | 3GP, 3G2, MJPG, MP4, WMV, H.263 |
| Audio formats | MP3, eAAC+, WMA, WAV | MP3, WAV, eAAC+ |
🔌 Connectivity | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| 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 | 3.0 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Supported | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| Battery type | Li-Ion: lithium-ion (Removable) BA600 | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 1320 mAh | 1200 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 5.6 hours | 5 hours |
| Standby | 472 hours (19.7 days) | 370 hours (15.4 days) |
➕ Other features | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| 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 | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, Flash player | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Retractable QWERTY keyboard |
| 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 • 1GB microSD included • Samsung TouchWiz 3.0 • Java framework |
☢️ Radiation rate | ||
| Sony Xperia U (ST25i) | Galaxy 551 (GT-i5510M) | |
| 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 |