3. Sprint Nextel
2009 Revenue: $25.3 billion
The company best known for its mobile phones and carrier services is also a player in mobile solutions. For example, in collaboration with GE Healthcare, Sprint deploys custom network solutions that are transforming hospitals across the country into a fully converged infrastructure.
Sprint is continuing its customer service drive and is seeing a positive return, said President and CEO Daniel Hesse. Customer satisfaction has improved for the ninth consecutive quarter, he said.