Samsung starts rolling out Android security patch for the month of March on Galaxy J3 2017. Recently Samsung has rolled out the security patch on Galaxy J7 Neo. Coming back to the Galaxy J3 (2017) update comes with the firmware version J330FNXXU3ARC1.
The update is packed with latest security patch. Which includes brings fixes for nine critical vulnerabilities that were discovered in the Android operating system as well as fixes for many high-risk and moderate-risk vulnerabilities. It is also packed with improvements in Samsung software. At present the Security patch is rolling out in Italy, other regions to follow soon.
As this is an OTA update , It might take some time to reach each and every user of galaxy J7 Neo. Meanwhile you can check it manually by going through the settings>>about phone>>soft. updates. Note: before installing the update so charge your phone at least upto 50%.