- Sub-1 GHz spectrum is essential to build coverage in thinly populated areas and provide indoor coverage in built-up and hard-to-reach urban areas.
- Adding 600 MHz to existing low bands will raise download speeds by 30-50% in rural areas.
- Additional low-band spectrum will help connect rural areas to better quality services by reducing the number of cell sites needed to reach the same level of performance.
- Ensuring that additional low-band spectrum accompanies expansion of mid-band and high band (i.e., mmWave) is crucial for maintaining digital equality.
Read more (and Download) the full report on: https://www.gsma.com/spectrum/resources/5g-low-band-spectrum/
Coverage comparison in free space depending on frequency 
from Coleago. 