According to a new market data forecasts from ABI Research, it will take more than 5 years for 5G to reach 100 million subscriber mark—2 years longer than 4G. 4G subscriber growth was much faster than with previous generations, fueled by the capabilities of increasingly powerful smartphones and the availability of 4G devices. 5G subscriber growth will likely be a bit more muted at first due to the increased complexity of 5G cells and networks, but will pick up in 2023.