Siemens
Side-by-side technical data
Siemens SFG75 vs Siemens AL21
Compare up to four phones using typed, normalized technical data. Measurements stay numeric, capabilities stay boolean, and options stay comparable.
The verdict
Neither runs away with it: each wins something.
Which one is for you?
Siemens SFG75, if you care about…
- Battery Capacity
- 840 mAh
- against 600 mAh
- RAM Capacity
- 32 MB
- against 2 MB
- Maximum Storage Capacity
- 32 MB
- against 2 MB
- Standby time
- 250 h
- against 220 h
Siemens AL21, if you care about…
- Weight
- 78 g
- against 110 g
- Body Thickness
- 19.2 mm
- against 24 mm
- Talk time
- 5 h
- against 3 h
Specification comparison
Battery
| Specification | SFG75 | AL21 |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 840 mAh Best value | 600 mAh |
| Battery Type | Li-Ion | Li-Ion |
| Fast Charge Power | — | — |
| Battery Features | — | — |
| Battery Endurance | — | — |
| Wireless charging power | — | — |
| Charge cycles | — | — |
| Talk time | 3 h | 5 h Best value |
| Standby time | 250 h Best value | 220 h |
| Music playback time | — | — |
Design
| Specification | SFG75 | AL21 |
|---|---|---|
| Body Colors | Silver, Black | Red, Black |
| Body Thickness | 24 mm | 19.2 mm Best value |
| Body Width | 45 mm | 45.8 mm |
| Body Height | 90 mm | 86.8 mm |
| Weight | 110 g | 78 g Best value |
| Usable Surface | 31.1 % | — |
| Body Materials | — | — |
| Resistance Features | — | — |
| Waterproof Depth | — | — |
| Drop Resistance Class | — | — |
| Repairability Class | — | — |
| Foldable | No | No |
| Rugged Build | No | No |
| Drop Test Count | — | — |
| Unfolded thickness | — | 19.2 mm |
| QWERTY keyboard | — | — |
Performance
| Specification | SFG75 | AL21 |
|---|---|---|
| Processor Model | — | — |
| Processor Process Size | — | — |
| Graphics GPU | — | — |
| Storage Type | — | — |
| Maximum CPU Clock | — | — |
| Maximum Storage Capacity | 32 MB Best value | 2 MB |
| AnTuTu Score | — | — |
| Geekbench 6 Single-Core | — | — |
| Geekbench 6 Multi-Core | — | — |
| CPU Description | — | — |
| Processor Type | — | — |
| 64-Bit Processor | — | — |
| RAM Capacity | 32 MB Best value | 2 MB |
| RAM Type | — | — |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | — | — |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | — | — |
Sensors
| Specification | SFG75 | AL21 |
|---|---|---|
| Fingerprint Sensor Placement | — | — |
Display
| Specification | SFG75 | AL21 |
|---|---|---|
| Display Aspect Ratio | 4:5 | 1:1 |
| Peak Display Brightness | — | — |
| Display Technology | TFT LCD | TFT LCD |
| Display Diagonal | 2″ | — |
| Display Horizontal Resolution | 176 px Best value | 130 px |
| Display Vertical Resolution | 220 px Best value | 130 px |
| Display Pixel Density | 141 ppi | — |
| Display Refresh Rate | — | — |
| Touch Sampling Rate | — | — |
| Display Contrast Ratio | — | — |
| Display Features | — | — |
| Integrated Projector | No | No |
| Projector Brightness | — | — |
| Projector Horizontal Resolution | — | — |
| Projector Vertical Resolution | — | — |
| Cover display diagonal | — | — |
| Cover display refresh rate | — | — |
| Cover display peak brightness | — | — |
| Display colors | 256K colors Best value | 65K colors |
Sensor
| Specification | SFG75 | AL21 |
|---|---|---|
| Sensor Features | — | — |
Software
| Specification | SFG75 | AL21 |
|---|---|---|
| Operating System | — | — |
| OS Family | — | — |
| OS Version | — | — |
| OS Update Support | — | — |
| Direct OS Updates | — | — |
| Google Services | — | — |
| Web browser | WAP 2.0/xHTML Best value | WAP 1.x |
| Java (J2ME) | Yes | Yes |
Connectivity
| Specification | SFG75 | AL21 |
|---|---|---|
| SIM Configurations | Mini-SIM | Mini-SIM |
| Cellular Bands | 2G GSM 900, 2G GSM 1800, 3G UMTS 2100 | 2G GSM 900, 2G GSM 1800, 2G GSM 1900 |
| Cellular Technologies | GSM, UMTS Best value | GSM, GPRS |
| Wi-Fi Standards | — | — |
| Wi-Fi Features | — | — |
| Bluetooth Version | — | — |
| Bluetooth Profiles | — | — |
| Navigation Systems | — | — |
| Connectivity Features | Video Calls, MP3 Player, MP4/3GP Player, Infrared | — |
| USB Version | Proprietary | Proprietary |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | — | — |
| SAR (EU) body | — | — |
| Messaging | SMS, MMS, Email | SMS, EMS, MMS |
Audio
| Specification | SFG75 | AL21 |
|---|---|---|
| Microphone Count | — | — |
| Audio Features | — | Loudspeaker |
| Alert types | Vibration, Downloadable ringtones, Polyphonic ringtones, MP3 ringtones | Vibration, Polyphonic ringtones |
Technical
| Specification | SFG75 | AL21 |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | SFG75 | AL21 |
|---|---|---|
| Built-in functions | Downloadable wallpapers, Video telephony, MP3 player, MP4 player, Predictive text input, Organizer | Predictive text input, Organizer |
