Samsung has started rolling out a new update to the Galaxy J7 Prime smartphone. Arriving as build number G610FDDU1AQA2, it's basically a security update that brings along Android fixes for the month of February.
Sadly, there's currently no confirmation on what other changes (if any) the update includes, although reports say some performance improvements are there.
Anyway, as is usually the case with OTA roll outs, it may take time for the update to hit your device. Meanwhile, if you feel impatient, you can manually check for it by heading to your handset's Settings menu.