Siemens C45 is a wonderful mobile phone. I bought in UK in 2002 and later used it in India.
I still use it! It is small, handy, reliable. It has very good standby time. Talk time is also good. Though it claims 300 min talktime, in reality I didnt find that much! What I like that minimum key operations for most frequently used tasks - like seeing missed called, reading/composing SMS, accessing address book etc. It was one of the very few phones of that time which offerred T9 text composing technology.
It has a big centered Accept button. I find this feature is extremely useful. Some mobiles have an accept button on left while some others have in right. So, centered accept button is really good. The phone doesnt feature a modern joystick like movement (which I hate). Its robust in built quality (I dropped it quite few times - no problem).
Features available -
WAP, T9 SMS, vibration alert, alarm, handsfree accesory,
Features not available -
Speakerphone, calendar, color screen, bluetooth etc.