There are several reasons that 5G will be better than 4G:
5G is significantly faster than 4G.
delivering up to 20 Gigabits-per-second peak data rates and more than 100 Megabits-per-second average data rates. 5G has more capacity than 4G.
5G is designed to support a multiple of 100 increase in traffic capacity and network efficiency.
5G has significantly lower latency than 4G, to deliver more instantaneous, real-time access: a multiple of 10 decrease in end-to-end latency down to 1ms.
5G uses spectrum better than 4G.
5G is also designed to get the most out of every bit of spectrum across a wide array of available spectrum regulatory paradigms and bands-from low bands below 1 GHz, to mid bands from 1 GHz to 6 GHz, to high bands known as millimeter wave.
5G is a unified platform that is more capable than 4G.
While 4G focused on delivering much faster mobile broadband services than 3G, 5G is designed to be a unified, more capable platform that not only elevates mobile broadband experiences, but also supports new services such as mission-critical communications and the massive IoT.
5G can also natively support all spectrum types (licensed, shared, unlicensed) and bands (low, mid, high), a wide range of deployment models (from traditional macro-cells to hotspots), and new ways to interconnect (such as device-to-device and multi-hop mesh).