In recent years, cellular (mobile) service providers have worked hard to eliminate "dead zones," providing customers with service wherever they traveled. by working to make the network available in more locations, cellular service companies were focusing on value creation.

I would say "increasing".

Explanation: Nowadays TELECOMS stocks are one of the most valuable things in the world. It wouldn´t be a surprise that companies leading this market are taking any opportunities to take advantage or to improve their value. Lack of coverage zone in some areas has always been a problem with cellphones, so if a company cleans that stain, their success is guaranteed.

no because it could make the world a terrible place to live in.

answer; quantitative versus qualitative research;