LTE does achieve up to 100 Mbps on a highway for me in Serbia, and LTE Advanced does up to 150 Mbps while stationary in a crowded city area with a base station

LTE does achieve up to 100 Mbps on a highway for me in Serbia, and LTE Advanced does up to 150 Mbps while stationary in a crowded city area with a base station far away. However, that is nowhere near 1 Gbps. I don't know any devices getting over 300 Mbps over LTE Advanced (4G+).