Samsung SECR300ZRAMTR - Manual (Page 89)

Settings 89
Version
You can view the S/W (Software) version, PRL (Preferred Roaming
List) identifier, ERI (Extended Roaming Indicator), Browser
version, and H/W (Hardware) version on your phone. This feature
is helpful if you need to contact Customer Service.
1. From the Settings menu, select Phone Info ➔ Version.
Hardware and software information for your phone
appears in the display.
2. Press to return to the Phone Info menu.