The debate about whether small cell deployments will be a noteworthy segment of the U.S. carriers’ wireless network plans in 2017 is over. All four major carriers in the U.S. are actively planning and deploying metro cells (outdoor small cells in urban/suburban areas) to improve coverage and increase capacity needs to prepare for 5G buildouts. The market is truly making the transition from small ad-hoc programs to large-scale rollouts. But there are still challenges.