I had one of the very first mobile phones in England... all those years ago.... outgoing calls cost 1.50 a minute, incoming calls 1.00 a minute... the six volt lead acid battery was good for about six hours standby and five minutes talk time, and weighed four kilos.... the whole thing was as big as a briefcase... no texts, cos there was no screen... and a rotary dial.... oh, and it only worked if you were within ten miles of a receiving station...of which there were about ten in the whole country....