Is there an unlock code for Samsung S4 that had US Cellular service?

[AC Question]

Just bought this Samsung S4 off an individual who had US Cellular service on it at one time. I am also wondering if Straight Talk can be used on this phone?

 

[B. Diddy]

Welcome to Android Central! I'm not sure if you can get it unlocked through US Cellular, since you're not a current customer: Device Unlocking Policy | U.S. Cellular