Uninstall any previous Samsung mobile drivers to avoid "driver conflicts."

Because the E1205T is a feature phone, standard software like Samsung Smart Switch often won't work. Instead, users typically look for drivers to use with these specialized tools:

Since many Keystone 2 variants use Spreadtrum (SPD) chipsets, you may specifically need SPD USB-to-Serial COM drivers if the standard Samsung ones fail. 4. Troubleshooting Connection Issues