In 2000 I was riding a bike and some big black professional athlete flipped his bike in a crosswalk and hit his head on the curb. He was knocked out. 20 people gathered and a nurse took charge. She pointed at me on a bike and said, "GET TO A PHONE". I Pulled out a cell phone and dialled 911. Cops were there in 1 minute. Ambulance took 10 minutes.
A year later in 2001, all 20 people would have had cell phones.
In 1980 my wife designed a synthesizer for development of the new cell phone system.
In 1990 my realtor had a $1k/month cell phone.
In 2000 I was designing circuits for cell towers being installed in China.
In 2020 my son was designing software for Android cell phones.
