This method is simple and doesn't require Nokia PC Suite.
While the original C3-00 uses files and a landscape 320x240 screen, the modern C300 runs Android 12 and features a large 720x1600 HD+ display. If you are looking to customize your device, For the Classic Nokia C3-00 (320x240) 320x240 nth nokia c300 themes hot
If you are currently rebuilding a retro device collection, let me know if you are looking for from that era, need help troubleshooting connectivity issues with older operating systems, or want to find software utilities for converting image assets into the classic Nokia format. Share public link This method is simple and doesn't require Nokia PC Suite
