mobile phone
A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link whi ...
introduced by Siemens in 1999.Siemens C 25 is positioned as an entry-level model. It is a small, lightweight, handy device. This model was available in only 5 colors (Classic Green, Classic Blue, Anthracite, Bright Blue or Bright Yellow). But it was possible to buy a removable front panel.
There is a function to write your own ringtone. There are several programs for writing melodies. For example, the MIDI-2-C25 allows you to convert MIDI standard music files into a Siemens C25 sheet of notes.
It weighs 135 g and its dimensions are 117 × 47 × 27 mm (length (without the antenna) × width × depth). Its display is a 3 × 12-character monochrome LCD. Display backlight color is green.
The phone's battery powers the phone for 300 minutes talk time, or up to 160 hours if left in stand-by mode. The Ni MH battery is used as standard. It is a
dual-band
In telecommunications, a multi-band device (including (2) dual-band, (3) tri-band, (4) quad-band and (5) penta-band devices) is a communication device (especially a mobile phone) that supports multiple radio frequency bands. All devices which ha ...
mobile phone, supporting both
GSM
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such ...
900 and GSM 1800 network frequencies. It supports up to 21
monophonic
Monaural or monophonic sound reproduction (often shortened to mono) is sound intended to be heard as if it were emanating from one position. This contrasts with stereophonic sound or ''stereo'', which uses two separate audio channels to reproduc ...
SMS
Short Message/Messaging Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile devices exchange short text ...
sending and receiving.
Reviews
Despite usability flaws, ''Mobile Review'' found it "a beautiful phone to hold and use". ''Mobiles'' magazine scored it 88/100, despite also criticising certain omissions.