You can try VCS to ICS file converter (Java, works with Windows, Mac, Linux etc.). It has the feature of parsing events and todos.
You can convert the VCS generated by your Nokia phone, with bluetooth export or via nbuexplorer.
- Complete support for UTF-8
- Quoted-printable encoded strings
- Completely open source code (GPLv3 and Apache 2.0)
- Standard iCalendar v2.0 output
- Encodes multiple files at once (only one event per file)
- Compatible with Android, iOS, Mozilla Lightning/Sunbird, Google Calendar and others
- Multiplatform