Forum Thread: How Do I See MDC/MDL or Odexed/Deodexed?

Check your Settings -> More -> About device -> Baseband version, and the last three digits of baseband should either tell you whether you have MDC or MDL.

As for odexed or deodexed, is your GS4 stock? If it's stock, it's most likely odexed. If you flashed a custom ROM, they're typically deodexed, but you can always check with the developer.