So far, we have seen three variants of the Samsung Galaxy Tab 4 10.1, namely the SM-T530,SM-T531,and SM-T535.
On Friday, A new Samsung device with the model number SM-G537A was approved by the Federal Communications Commission (FCC). It is believed that this is AT&T‘s Samsung Galaxy Tab 4 10.1 variant.
According to FCC filling, the SM-G537A features a 1.2GHz Quad Core CPU and supports AT&T 4G (LTE) network connectivity.
Furthermore, The Samsung SM-G5327A has been spotted in an UA Profile which confirms the existence of the device. The UA profiles reveal that the SM-G537A model runs Android 4.4 KitKat, and feature displays with 1280×800 pixels.
Source: SM-T537A.xml, FCC.