Nokia 3650 is a very cheap Symbian Series 60 phone that I have used since 2003.And now, I'm trying to write everything that I have know about this phone which might help others with the same phone (or similar phone such as Nokia 3660, N-Gage, and even newer phones such as Nokia 6600.)
I've had a happy time using this phone. It has all the bells and whistles that I need from a GSM cell phone (i also have a bluetooth capable PDA to do things that are hard/uncomfortable to do on the Nokia 3650, and a CDMA Phone that has an FM radio.)
I believe Nokia has stopped producing this series in favor of newer models (especially those that are based on Symbian 7.0,) but I don't think I will buy another phone until next year, since I haven't been able to find a phone with a decent price/performance (I think this is the cheapest and most functional phone I ever had.) Despite the fact that this model is an old one.
This site does not host any .sis (Symbian installer) or .jar (Java MIDP/J2ME/Midlet) files, except for my own application, so you will only find links to download other people software (mostly free or open source.)