The first of the alleged three would be the SM-J100F, which will be based on a Marvel Armada Mobile PXA1908 chipset. In other words, it will come equipped with a quad-core 64-bit Cortex-A53 CPU, sporting a single SIM card slot and support for 2G, 3G and LTE connectivity.
As for the SM-J100FN, it will also share the same “heart” as the SM-J100F mentioned above, with the added advantage of having another SIM card slot to the chassis, allowing you to separate your personal and professional life. Last but not least would be the Galaxy J1 that is already revealed in Malaysia, where it will have the model name SM-J100H that will feature the most basic connectivity to boot – that is, 2G and 3G, sans LTE.