client. The 1100 is compatible with Nokia's Xpress-On covers (including matching battery compartments). In addition to the default light blue, orange or black, there are also dark blue, yellow, red, green and pink versions offered by Nokia, as well as many 3rd-party covers. It has been specifically designed for developing countries: its keypad and front face have been designed to be as dustproof as possible, and its sides are non-slip for humid weather. Other features include a 50-message capacity (inbox and drafts, with 25 messages in the sent items folder), alarm, stopwatch, calculator, 6 profiles, contacts storage (capacity 50, with the ability to assign different tones and icons to different contacts), games (Snake II and Space Impact+) and the ability to compose your own ringtones. Variants There are four distinct variations within the series: the 1100a, 1100b, 1101 and the 1108. They differ as follows: The 1100a operates on the GSM-900/1800 network. The 1100b operates on the GSM-850/1900 network. The 1101 replaces the green backlighting with a white backlighting and adds a simple WAP 1.1 browser. The 1108 also replaces the green backlighting with a white backlighting. Mainly made for Asian markets. Firmware history The phone's firmware version can be checked by dialling *#0000#. Use The phone uses a GSM method of activation via a SIM card. The Nokia BL-5C battery has a long standby and talk time – this battery is used in more advanced models that have increased power needs for their features, but in the basic 1100 it consumes a fraction of the power and therefore lasts for up to 400 hours between charges. The phone is offered for use with a wide range of mobile phone networks. See also Nokia List of Nokia products List of best-selling mobile phones References External links Download Nokia 1100 user manual 1100 Mobile phones introduced in 2003 Nokia phones 1000 series Mobile phones with user-replaceable battery