Cell phones were science fiction a few years ago

We used to stare in awe and amusement at films where people would open up a suitcase to pull out a telephone handset the size of half a house and put it to their ear. Back then no one could have imagined that we would all have a telephone in our pocket in just a few years time. We were only just getting used to the idea that most people had a telephone in their house but now every member of my family has at least one cell phone in use plus the...
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