Designed for consumers, the zBoost-ONE cell phone signal booster extends a Cell Zone for 1 - 4 phones/devices on the same PCS carrier (either Sprint or MetroPCS). The zBoost-ONE supports voice and data protocols at 1900MHz in their homes or offices, boosting signal up to 1200 sq. ft. or up to 40 feet from the unit. zBoost-One, the FIRST ONE PIECE cell phone signal booster actually SYNCS to your carrier to reduce dropped calls and increase call clarity.