How to update cell towers on Verizon?

Could you elaborate on the process of updating cell towers on Verizon's network? Are there specific steps that need to be followed, or does it involve a collaboration between Verizon and other entities? How often do these updates typically occur, and what kind of improvements can subscribers expect as a result? Is there a way for individuals to track the progress of these updates in their area? Lastly, are there any potential challenges or obstacles that could arise during the update process?