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first phone
The first phone was invented in 1876 in March. Alexander graham Bell had accidentally plucked a reed and that's when they realized that sound could transfer over wires. -
telephone line
in 1877 the first construction started on the first telephone line. it went to Boston to Somerville, Massachusetts. -
telephone book
It was a page long had 50 names and no numbers. The page was divided into four sections: residential, professional, essential services, and miscellaneous. -
expansion of telephone lines
By the end of 1880 there were 49,000 telephones in the united states. The following year telephone service between Boston and Providence, Rhode Island, had been established. -
rotary dialing
An associate of Stowgers' invented the rotary dial. Replacing the buttons. -
pay phones
The first was coin operated telephone patented by William Gary of, Hartford Connecticut. But they were first installed in 1905 by this time there was 2.2 million phones. -
mobile phone
The earliest mobile phones were radio controlled units designed for cars. they had extremely limited range. -
touch tone phones
AT&T had experimented with using tone rather than pulse since 1940. This had not started till 1963. -
911
before 1968 they had no way to call first responders. The Federal Communications Commission and AT&T soon announced they would use 911 since its easy to remember -
cordless phones
the first cordless phones were introduced in 1970. In 1986 the frequency range was 47 to 49 MHz. -
cell phone
Motorola introduced the first hand-held cellular phone in 1973. Research on what would become the cellular phone network used today began in 1947 at Bell Labs. -
caller id
multiple people created devices for identifying where incoming calls were coming from. This started late 1960s. They made it available in 1984 (https://www.thoughtco.com/history-of-the-telephone-alexander-graham-bell-1991380) -
iphone 12
the iphone 12 will have four cameras. the price is estimated to be around $800. https://www.macrumors.com/roundup/iphone-12/ -
virtual reality
The technology lets iPhone users place virtual objects in the actual world. You can use it to plan a to build 3D models on your coffee table also play games and much more.https://www.cultofmac.com/488696/future-of-the-iphone/ -
better iphone materials
it is likely to to adopt more robust materials that don't get damaged as easily. An idea they have is sapphire crystal displays. https://www.cultofmac.com/488696/future-of-the-iphone/
