Siemens SL45

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Siemens SL45
Siemens SL45.JPG
An image of Siemens SL45
Manufacturer Siemens
Compatible networks GSM
Availability by region2000 - 2006
Dimensions105 mm x 46 mm x 17 mm
CPU Siemens/Infineon C166
Removable storage Hot-Swappable MMC
Battery Lithium ion battery
Display101 x 80 pixel, monochrome
Connectivity IrDA
Data inputs Keypad

The Siemens SL45 was the first mobile phone with memory expansion and an MP3 player, [1] which debuted in late 2000. An improved version, the SL45i, was also the first phone to have a Java virtual machine.

Contents

In addition to the MP3 player, SL45 offered other advanced features such as dictaphone with several hours of recording time, auto responder, voice dialing and voice commands, WAP browser, and context sensitive help in several languages. Other software include calendar/organizer, alarm clock, stopwatch, calculator, currency converter and games. While the SL45 was one of the most advanced phones in its time, it was also one of the smallest. [2]

Versions

The Siemens SL45 came in three versions:

These three phones are electronically identical, and the SL45i's firmware can be installed in the SL42 and SL45, thus enhancing them with a Java virtual machine.

Features and specifications

Siemens SL45i SL45 SL42 Siemens SL45i SL45 SL42.JPG
Siemens SL45i SL45 SL42

Criticism

The SL45 series was a professional model and thus very highly priced at the time of release. It was sometimes criticized for its bugginess, particularly in that simply sending too many SMSs could cause the phone to crash, and for being relatively delicate - there are many known issues of vibration alert, or MP3 player control buttons on the side of the case stopping functioning after phone fall.

Firmware

The SL42, SL45 and SL45i share the same electronic components, and thus firmware can be exchanged between them. It can enhance functionality of SL42 and SL45 with Java support. Relatively simple structure of the firmware code, and the ease of new firmware installation (standard serial cable included in the box is suitable) led to many custom firmware modifications (more than 300 patches) sprung over the Internet. These correct software bugs, change the phone's graphics, or even add new functionality like key remapping, calling pictures, or detailed battery information, and even up to 15 virtual SIM-cards (user must reboot phone to select virtual SIM from list).

User base

Due to the above-mentioned firmware enhanceability, availability of many Java applications further enhancing the feature set (with, for example, sending of long SMS messages, e-book reading, video playing, and E-mail client functionality), MP3 player functionality and memory card slot, and also for being fairly priced after a few years since its release, the SL45 series gained a huge user base, constantly developing new firmware patches, Java applications and hardware modifications, enhancing the phone's functionality. Many fans of the model claim that there is no mobile phone which can replace the SL45i (either the original one, or SL42/45 enhanced with SL45i firmware) for them.

The phone is indeed very versatile and has a huge feature set, especially when compared to other phones of its time, although it lacks many features now considered standard for modern phones, like colour display, integrated camera, polyphonic or digitized ringtones, Bluetooth and GPRS functionality. Modern phones with memory card support also can be natively connected to a computer's USB port, greatly improving transfer speeds when compared to the SL45's serial connection; this limitation can be, however, omitted by using a third-party memory card reader.

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References

  1. "Siemens Cell Phones: Years of Legacy in the Mobile Phone Market". Cellkraze.com. Retrieved 2010-01-18.
  2. Vitaly Shuravko. "Siemens SL45 GSM mobile". iXBT Labs. Retrieved 2010-01-19.