Siemens A57 vs Samsung GT-i8000 Omnia 2
| Type | Bar (classic) | Touch |
| Dimensions | 103.00 x 46.00 x 21.50 mm | 118.00 x 59.60 x 11.90 mm |
| Weight | 84.00 g | 117.00 g |
| Display size | - | 3.70" |
| Display | Mono / STN 101 x 64 px | Color / AMOLED 64k colors 480 x 800 px (3.70") 252 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 300 min. (5.0 h) | 2G: 600 min. (10.0 h) |
| Stand-by (max.) | 2G: 250 h. (10.4 days) | 2G: 430 h. (17.9 days) |
| Standard battery | Li-Ion 700 mAhBuy powerbank
| Li-Ion 1500 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 50 places | 1000 places |
| Internal memory |  | 2 GB, 8 GB, 16 GB |
| RAM memory | | 256 MB |
| Memory cards | |  microSD, microSDHC up to 32 GBBuy memory card |
| Operating system | - | MS Windows Mobile 6.5 Pro |
| Interface | - | TouchWiz 2.0 |
| Processor | - | Samsung S3C6410 |
| Processor clock | - | 800 MHz |
| GPU | - | - |
| Touchscreen | | |
| SAR (10g) | 0,46 W/kg | |
| DualSIM | | |
| Announced | | 3Q 2009 |
| Other names | - | i8000; Omnia II; Omnia2 |
| GSM frequencies | 900 1800 | 850 900 1800 1900 |
| UMTS | | 900 1900 2100 |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | nd | 5 Mpx |
| Resolution | nd | 2592x1944 px |
| Optical zoom | nd | |
| Flash | nd | 2x LED |
| Dual-colour LED flash | nd | |
| Video resolution | nd | 720x480 px |
| Video formats | nd | H.263, MPEG4 - 30 fps |
| Additional | nd | AF |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 0.3 Mpx |
| Resolution | nd | 640x480 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video formats | nd | H.263, MPEG4 - 30 fps |
| Additional | nd | - |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v1.2.1 | v2.0 |
| HSCSD | | |
| HSDPA | | 7.20 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | class 10 |
| EDGE | | class 10 |
| Bluetooth | | v2.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | v802.11 b/g |
| WiFi frequencies | | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | v2.0 |
| GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | v1.2 |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | z RDS |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | | AAC, AAC+, AMR, RA, WAV, WMA, eAAC+ |
| Polyphony | | 64 voices |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | | MIDP 2.0 |
| 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 | | |