Nokia PC Suite is an application offered by Nokia that allows users owning a nokia phone to do various useful things such as viewing stored sms, edit catalog entries, view stored pictures etc. One of its major drawbacks is that it fails to show properly greek characters in sms. This doesn't happen for every character, but for the greek characters that do not exist in the latin alphabet and for the sms messages stored in gsm 7 bit file letter encoding (which means for most sms). The reason it happens, is very simple and it is very surprising that Nokia people haven't discovered it yet. So the reason is that, although GSM 7 bit character encoding does 1 to 1 mapping between GSM 7 bit character encoding and Unicode encoding for latin letters it doesn't do the same for the greek letters. To be more clear, GSM 7 bit encoding and Unicode encoding for latin letter R is the same, but this is not the case for all greek letters represented in GSM 7 bit character encoding.

By clicking here you can find an application (including its source code)  that I created that solves the problem for sms stored in a pc. The only thing it does is to  look for greek characters in stored sms and replacing them with the proper unicode code.

By clicking here you can find the gsm 7 bit alphabet