Straight Talk's 4G service is via T-Mobile, so, yes, the phone can be used on Straight Talk. However, there is this caveat. This phone requires a micro SIM card. Straight Talk only has full size SIM cards available. You can successfully trim a standard SIM to fit this phone. Google for this C-net article: How to cut your own micro-SIM card. It will tell you how to trim the SIM and direct you to a few cutters that do this, virtually, automatically.