Siemens SL45 vs Siemens SL42i
| Type | Bar (classic) | Bar (classic) | Bar (classic) | Bar (classic) |
| Dimensions | 105.00 x 42.00 x 17.00 mm | 105.00 x 46.00 x 19.00 mm | 105.00 x 46.00 x 17.00 mm | 105.00 x 46.00 x 17.00 mm |
| Weight | 88.00 g | 88.00 g | 88.00 g | 88.00 g |
| Display size | - | - | - | - |
| Display | Mono / STN | Mono / STN 101 x 80 px | Mono / STN 101 x 80 px | Mono / STN 101 x 80 px |
| Display protection |   | | | |
| Additional display | | | | |
| Protection of the secondary display | | | | |
| Talk time (max.) | 2G: 240 min. (4.0 h) | 2G: 240 min. (4.0 h) | 2G: 330 min. (5.5 h) | 2G: 240 min. (4.0 h) |
| Stand-by (max.) | 2G: 170 h. (7.1 days) | 2G: 170 h. (7.1 days) | 2G: 230 h. (9.6 days) | 2G: 200 h. (8.3 days) |
| Standard battery | Li-Ion 540 mAhBuy powerbank
| Li-Ion 540 mAhBuy powerbank
| Li-Ion 650 mAhBuy powerbank
| Li-Ion 540 mAhBuy powerbank
|
| Quick battery charging | | | | |
| Wireless battery charging | | | | |
| Phonebook memory | 500 places |  | 500 places | 500 places |
| Internal memory | 32 MB | | | 16 MB |
| Memory cards |  MMC | MMC | MMC up to 2 GBBuy memory card | MMC |
| Touchscreen | | | | |
| DualSIM | | | | |
| Other names | U35 | - | - | - |
| GSM frequencies | 900 1800 | 900 1800 | 900 1800 | 900 1800 |
| UMTS | | | | |
| LTE standard | | | | |
| CDMA | | | | |
| Standard TD-SCDMA | | | | |
| UMA | | | | |
CAMERAS - BACK
CAMERAS - FRONT
SENSORS
| Accelerometer | | | | |
| Proximity | | | | |
| Light | | | | |
| Magnetometer | | | | |
| Gyroscope | | | | |
| Barometer | | | | |
| Altimeter | | | | |
| Gravity | | | | |
| Hall-effect | | | | |
| Iris scanner | | | | |
| Fingerprint scanner | | | | |
| Thermometer | | | | |
| Hygrometer | | | | |
Data transfer
| xHTML | | | | |
| WAP | v1.1 | v1.1 | v1.1 | v1.1 |
| HSCSD | | | | |
| HSUPA | | | | |
| HSPA | | | | |
| HSPA+ | | | | |
| LTE DL | | | | |
| LTE UP | | | | |
| WIMAX+ | | | | |
| GPRS | | | | |
| EDGE | | | | |
| Bluetooth | | | | |
| HDMI | | | | |
| WiFi | | | | |
| WiFi frequencies | | | | |
| WiFi Direct | | | | |
| WiFi Display | | | | |
| DLNA | | | | |
| Miracast | | | | |
| WiFi hotspot | | | | |
| IrDA | | | | |
| USB | | | | |
| Beidou | | | | |
| NFC | | | | |
COMMUNICATION AND MESSAGING
| Call waiting | | | | |
| Conferency | | | | |
| Call forwarding | | | | |
| Instant Messenger | | | | |
| SMS | | | | |
| EMS | | | | |
| MMS | | | | |
| Dictionary | T9 | T9 | T9 | T9 |
| Swype | | | | |
| e-mail client | | | | |
| Hardware QWERTY keyboard | | | | |
| RSS Reader | | | | |
Multimedia
| Radio | | | | |
| MP3 | | | | |
| Stereo speakers | | | | |
| Audio Jack | | | | |
| HD Voice | | | | |
| Polyphony | | | | |
| Ring composer | | | | |
| Games | | | | |
| Java | | MIDP 1.0 | MIDP 2.0 | |
| Videophone | | | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | | | |
| Stopwatch | | | | |
| Alarm | | | | |
| Calculator | | | | |
| Currency converter | | | | |
| Organizer | | | | |
| Calendar | | | | |
| Flight mode | | | | |
| SyncML | | | | |
| Data and fax | | | | |
| Screensaver | | | | |
| Interchangeable covers | | | | |
| Voice dial | | | | |
| Speakerphone | | | | |
| Recorder | | | | |
| Vibrations | | | | |