Siemens
Side-by-side technical data
Siemens Xelibri 4 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 Xelibri 4, if you care about…
- Battery Capacity
- 650 mAh
- against 600 mAh
- Weight
- 71 g
- against 78 g
Siemens AL21, if you care about…
- Talk time
- 5 h
- against 4 h
- Standby time
- 220 h
- against 200 h
- Display Horizontal Resolution
- 130 px
- against 101 px
- Display Vertical Resolution
- 130 px
- against 65 px
Specification comparison
Performance
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Processor Model | — | — |
| Processor Process Size | — | — |
| Graphics GPU | — | — |
| Storage Type | — | — |
| Maximum CPU Clock | — | — |
| Maximum Storage Capacity | — | 2 MB |
| AnTuTu Score | — | — |
| Geekbench 6 Single-Core | — | — |
| Geekbench 6 Multi-Core | — | — |
| CPU Description | — | — |
| Processor Type | — | — |
| 64-Bit Processor | — | — |
| RAM Capacity | — | 2 MB |
| RAM Type | — | — |
| Expandable Storage | No | No |
| AnTuTu version | — | — |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | — | — |
Design
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Body Colors | — | Red, Black |
| Body Thickness | 19 mm Best value | 19.2 mm |
| Body Width | 53 mm | 45.8 mm |
| Body Height | 99 mm | 86.8 mm |
| Weight | 71 g Best value | 78 g |
| Usable Surface | — | — |
| 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 | — | — |
Battery
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 650 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 | 4 h | 5 h Best value |
| Standby time | 200 h | 220 h Best value |
| Music playback time | — | — |
| Reverse wireless charging power | — | — |
Display
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Display Aspect Ratio | — | 1:1 |
| Display Technology | — | TFT LCD |
| Peak Display Brightness | — | — |
| Display Diagonal | — | — |
| Display Horizontal Resolution | 101 px | 130 px Best value |
| Display Vertical Resolution | 65 px | 130 px Best value |
| Display Pixel Density | — | — |
| 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 | Monochrome | 65K colors Best value |
Sensors
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Fingerprint Sensor Placement | — | — |
Sensor
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Sensor Features | — | — |
Software
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Operating System | — | — |
| OS Family | — | — |
| OS Version | — | — |
| OS Update Support | — | — |
| Direct OS Updates | — | — |
| Google Services | — | — |
| Web browser | — | WAP 1.x |
| Java (J2ME) | No | Yes Best value |
| Widevine L1 | — | — |
Connectivity
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| SIM Configurations | Mini-SIM | Mini-SIM |
| Cellular Bands | 2G GSM 900, 2G GSM 1800 | 2G GSM 900, 2G GSM 1800, 2G GSM 1900 |
| Cellular Technologies | GSM | GSM, GPRS |
| Wi-Fi Standards | — | — |
| Wi-Fi Features | — | — |
| Bluetooth Version | — | — |
| Bluetooth Profiles | — | — |
| Navigation Systems | — | — |
| Connectivity Features | — | — |
| USB Version | — | Proprietary |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | — | — |
| SAR (EU) body | — | — |
| Messaging | SMS, EMS | SMS, EMS, MMS |
| Max. download speed | — | — |
| Max. upload speed | — | — |
Audio
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Microphone Count | — | — |
| Audio Features | — | Loudspeaker |
| Alert types | Vibration, Polyphonic ringtones, Downloadable ringtones | Vibration, Polyphonic ringtones |
Technical
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | Xelibri 4 | AL21 |
|---|---|---|
| Built-in functions | Screensavers, Downloadable pictures, Predictive text input, Organizer, Voice dial | Predictive text input, Organizer |
