As Alphabet's Loon prepares for its first commercial trial to deliver cell service via balloon in Kenya, some wireless carriers doubt the tech's viability (Paresh Dave/Reuters)

Paresh Dave / Reuters:
As Alphabet's Loon prepares for its first commercial trial to deliver cell service via balloon in Kenya, some wireless carriers doubt the tech's viability  —  SAN FRANCISCO (Reuters) - Google's bet on balloons to deliver cell service soon faces a crucial test amid doubts about the viability …