Sony Xperia U (ST25a) vs CAT B15
Side by side comparison between Sony Xperia U vs CAT B15 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"
TFT
TFT
480x800
5
MP
MP
0.3mp
512MB
RAM
RAM
Dual-core
2000
mAh
mAh
(Removable)
What's the better phone? Sony Xperia U (ST25a)
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!
12 Advantages 
8 Advantages | 26 Common items in both devices |
| 1GHz 32bit Dual-core (45nm) |
| 512MB LPDDR2 |
| 16 million |
| (back) 5MP |
| Only digital zoom |
| Autofocus |
| EIS: Digital stabilization |
| +19 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 (ST25a) | CAT B15 | |
| Model | Xperia U (ST25a) | CAT B15 |
| Other model names | Sony Xperia U ST25, Sony Kumquat | Caterpillar B15 Dual-sim |
| Country or region available |     (Latin America), Brazil, Canada, USA |  (Global, International) |
| Brand | Sony | CAT |
| Release date | 5/7/2012 | 3/1/2013 |
| Depth | 12 millimeters (0.47 inches) | 15 millimeters (0.59 inches) |
| Size (width x height) | 54 x 112 millimeters (2.13 x 4.41 in) | 69.5 x 125 millimeters (2.74 x 4.92 in) |
| Weight | 110 grams (3.85 ounces) | 170 grams (5.95 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | IP67 certified: dust proof and waterproof over 1 meter and 30min. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
📲 Display | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| Display type | TFT LED-Backlit LCD | TFT LCD |
| Screen size | 3.5" inches | 4" inches |
| Screen-to-body ratio | ~55.8% (screen-to-body ratio) | ~52.4% (screen-to-body ratio) |
| Display resolution | 480x854 pixels (16:9) | 480x800 pixels |
| Touchscreen | Capacitive Multitouch 4-points | Capacitive Multitouch 2-points |
| Pixel density (dot pitch) | 280 PPI | 233 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Scratch-resistant glass | Gorilla Glass |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| System version | Android 2.3.7 Gingerbread | Android 4.1.2 Jelly Bean |
| 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 (ST25a) | CAT B15 | |
| Chipset | 32bit: ST-Ericsson NovaThor U8500 (45nm) | 32bit: MediaTek MT6577 |
| CPU | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) |
| GPU graphical controller | ARM Mali-400 MP1 | PowerVR SGX531T |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| RAM memory | 512MB LPDDR2 | 512MB LPDDR2 |
| Internal storage | 8GB (4GB available) | 4GB (2.49GB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| 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) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 14.4/5.76 Mbps | 7.2/5.76 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 850/1900/2100 | Latin America model: UMTS 850/1900 Europe/Africa model: UMTS 900/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA | GPRS, EDGE, UMTS, HSDPA, HSUPA |
| 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 (ST25a) | CAT B15 | |
| Back camera (main camera) | 5 megapixels | 5 megapixels |
| Main camera resolution | 2592x1944 pixels | 2592x1944 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | HD (1280x720) 30 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 | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| Front camera (secondary) | 0.3 megapixels | 0.3 megapixels |
| Front camera resolution | 640x480 pixels | 640x480 pixels |
| Video recording (secondary) | VGA (640x480) | VGA (640x480) |
| 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 (ST25a) | CAT B15 | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM (RDS) | Not supported |
| 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, eAAC+ |
🔌 Connectivity | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| 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 | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| Battery type | Li-Ion: lithium-ion (Removable) BA600 | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 1320 mAh | 2000 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 5.6 hours | 16 hours |
| Standby | 472 hours (19.7 days) | 456 hours (19 days) |
➕ Other features | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| 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 |
| 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 • WiFi hotspot • Drop to concrete resistance from up to 1.8m • IP67 certified: dust and waterproof up to 1m for 30min • MIL-STD-810G certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant Java framework |
☢️ Radiation rate | ||
| Sony Xperia U (ST25a) | CAT B15 | |
| 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 |