1/1/17001700sScientist TheorizesYou Can TransmitMessages ThroughElectricity1/1/18771877The first telephone line is constructed1/1/19731973Cellphones are invented1/1/19831983Cellphones are released to the publicThe Telephone Timeline1700sScientist TheorizesYou Can TransmitMessages ThroughElectricity1877The first telephone line is constructed1973Cellphones are invented1983Cellphones are released to the public