From the first ever mobile telephone made in 1956, to the present day.
1956 - SRA/Ericsson MTA (Mobile Telephone System A)
This bad boy weighed 88 pounds, making it ironically immobile.
1983 - Motorola DynaTAC 8000X
The first truly mobile phone. It retailed for $3,995 in 1983, which translates roughly to over $8,700!