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Radios
Radios were closely related to telecommunications and had many people working on it at the same time but credit was allocated to one person primarily.
http://science.howstuffworks.com/innovation/inventions/who-invented-the-radio.htm -
Sounds
A man named Alexander Graham Bell experimented with a "harmonic telegraph". He made a breakthrough in 1875 where he received a response from one of his devices. -
Voice
Then Alexander decided to improve the device so that voice is heard as the previous experiment only transmitted noises. He achieved this in 1876. At this point he was competing with a Italian inventor so he also put a patent on the phone just 3 days before. -
Candlestick
Popular from the 1890s to the 1930s, the candlestick phone was separated into two pieces. The mouth piece formed the candlestick part, and the receiver was placed by your ear during the phone call. This style died out in the ’30s when phone manufacturers started combining the mouth piece and receiver into a single unit. -
Rotary Phones
The rotary phone became popular. To dial, you would rotate the dial to the number you wanted, and then release. Based on my limited interaction with rotary dial phones, this must have been incredibly tedious. As push-button phones gained popularity in the 1960s and ’70s -
Answering Machine
The answering machine was convenient to most people. It allows users to receive messages without even being there.It began to get popular in the 1960s -
Push Button
In 1963 phones changed to use buttons instead of a dial and they contacted a phone operator as well as being vulnerable to spoofing (A malicious infection) -
Mobile Phones
The Phones in the nineties were populated by Nokia and Samsung. They used a very similr style of technology to make their mobile phones. Some used a slider to make the dial smaller and more convenient. -
IPhones
Apple released a new phone that was utilizing a new touch screen technology. This technology expanded so much that in 2016 everyone has a phone with touch screens. -
Possible bending phones
Currently engineers are developing phones that can bend which means they can fit in pockets easier. This bending screen type might become pivotal in the future.