Comparison of Siemens A51 and Siemens A57 [S]ave
| Attribute |  Siemens A57 × | Siemens A51 × |
|---|---|---|
| General | ||
| Brand | Siemens | Siemens |
| Launch | ||
| Announced | 2004, Q2 | 2004, Q4 |
| Body | ||
| Width (mm) | 21.5 | 21 |
| Length (mm) | 103 | 103 |
| Height (mm) | 46 | 46 |
| Weight (g) | 84 | 84 |
| SIM | Mini-SIM | Mini-SIM |
| Network | ||
| Technology |
|
|
| 2G bands |
|
|
| Memory | ||
| Card slot | No | No |
| Display | ||
| Resolution (px) | 101 x 64 | 101 x 64 |
| Display Type | Monochrome graphic | Monochrome graphic |
| Battery | ||
| Type | Removable | Removable |
| Capcity (mAh) | Li-Ion | Li-Ion |
| Comms | ||
| WLAN | No | No |
| Bluetooth | No | No |
| GPS | - | - |
| Radio | No | No |
| Sound | ||
| Loudspeaker | - | - |
| 3.5mm jack | - | - |
| Misc | ||
| Colors |
|
|
| Phonebook | 50 entries, 4 groups, Picture call | 50 entries |
| Call records | 10 dialed, 10 received, 10 missed calls | 10 dialed, 10 received, 10 missed calls |
| Alert types | Vibration; Downloadable polyphonic ringtones | Downloadable polyphonic ringtones |
| Features | ||
| Messaging | SMS, EMS | SMS, EMS |
| Browser | WAP 1.2.1 | WAP 1.2.1 |
| Games | 4 - Stack Attack, Balloon Shooter, Move the Box, Wacko | Stack Attack and Wacko |
| Java | No | No |
| Stand-by (h) | 250 | 250 |
| Talk time (h) | Up to 2 h | Up to 5 h |
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