Sony Xperia U vs Sony Ericsson Xperia Arc S
| Type | Touch | Touch |
| Dimensions | 112.00 x 54.00 x 12.00 mm | 125.00 x 63.00 x 8.70 mm |
| Weight | 110.00 g | 117.00 g |
| Display size | 3.50" | 4.20" |
| Display | Color / TFT 16M colors 480 x 854 px (3.50") 280 ppi | Color / TFT 16M colors 480 x 854 px (4.20") 233 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 396 min. (6.6 h) 3G: 336 min. (5.6 h) | 2G: 445 min. (7.4 h) 3G: 455 min. (7.6 h) |
| Stand-by (max.) | 2G: 260 h. (10.8 days) 3G: 472 h. (19.7 days) | 2G: 460 h. (19.2 days) 3G: 460 h. (19.2 days) |
| Standard battery | Li-Ion 1320 mAhBuy powerbank
| Li-Po 1500 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 8 GB | 1 GB |
| RAM memory | 512 MB | 512 MB |
| Memory cards | |  microSD, microSDHC up to 32 GBBuy memory card |
| Operating system | Android 2.3 Gingerbread | Android 2.3.4 Gingerbread |
| Processor | ST-Ericsson NovaThor U8500 | Qualcomm MSM8255T |
| Processor clock | 1000 MHz | 1400 MHz |
| GPU | ARM Mali-400 MP | Adreno 205 |
| Touchscreen | | |
| SAR (10g) | 1,62 W/kg |  |
| DualSIM | | |
| Announced | | 4Q 2011 |
| Other names | ST25i; ST25a | LT18i; LT18a |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 900 2100 | 900 2100 |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 8.1 Mpx |
| Resolution | 2592x1944 px | 3264x2448 px |
| Optical zoom | | |
| Digital zoom | 16x | 16x |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1280x720 px | 1280x720 px |
| Video formats | H.263, H.264 | H.263, H.264 |
| Additional | - | - |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 0.3 Mpx | nd |
| Resolution | 640x480 px | nd |
| Optical zoom | | nd |
| Flash | | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.263, H.264 | nd |
| Additional | - | nd |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 14.40 Mbit/s | 14.40 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | class 12 |
| EDGE | | class 12 |
| Bluetooth | v2.1 EDR | v2.1 EDR |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | v1.0 |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | z RDS | z RDS |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, OGG, WMA, eAAC+ | AAC, AAC+, AMR, OGG, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | Dalvik | Dalvik |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | v1.2 |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |