There were a
few other differences as well, such as the smaller screen size, different
design, and limited availability when compared to the One X. However, the fact that the One S was powered by the Qualcomm Snapdragon S4 chipset made it a more popular
choice among those
interested in custom ROMs as the Snapdragon chipset meant developing for the One S was easier than developing for the Tegra 3 powered One X. Currently, both devices enjoy almost equal attention from developers and a lot of custom ROMs are available for both the smartphones, based on latest Android versions.