Accompanying the SPH-L900 to the FCC's office was a pair of Samsung tablets. The SPH-P500 and SCH-i915 would appear to be 4G LTE versions of the Samsung Galaxy Tab 2 (10.1) for Sprint and Verizon respectively. Interestingly, someone ran the Verizon version of the tablet on GLBenchmark and listed it as having the popular Qualcomm Snapdragon S4 MSM8960 under the hood. Earlier versions of the tablet had the TI OMAP 4430 running the show.
source: FCC (1), (2), (3) via Engadget