This research explains about the analysis of performance of 4G by using G-Net Track software to take the data at F4 UMY building. The provider that used were Indosat and Telkomsel, the method that applied in this research was the comparison between the result of the measuring in the I and II rooms at the ground floor, first floor, and the second floor. The parameter of this research are RSRP (Reference signal received power) and RSRQ (Reference signal received quality). Telkomsel's RSRP precentage at UMY zone with 60 meters building, and 800 meters building for Indosat's RSRP precentage at Indomaret zone. However, there are a lot of disturbances bacause of the barriers such as wall or glass, trees, buildings, etcetera. The high capacity of BTS might affect the network so the quality of Indosat provider RSRP percentage boil down to poor. Based on the measurement of telkomsel and indosat provider, those have different RSRP quality but has the same quality of RSRQ. In this research, telkomsel provider has better quality than indosat provider, especially on the value of the RSRP.