From Tin Cans to Touchscreens: The 40 Most Important Phones in History
Pink Princess Phone
If you grew up with one or more sisters, then you were probably better off spending your allowance on postage stamps and mailing letters to your friends rather than trying to wait for the phone to be free. Sexist? Maybe, but is it not true?

Image Credit: treehugger.com
Credit AT&T for recognizing the sales potential in marketing a phone for women, and thus the Pink Princess phone was born. It was compact and light instead of big and bulky, and it even had a light-up dial that could be used as a night light. This made it the perfect bedside companion and helped Ma Bell market more phones to families who already owned one.
Feeling nostalgic? While the original Princess Phone is no longer in production, Crosley sells a reproduction of the 1950s unit, which you can find on Amazon and through other retailers.
Invented:1959
Bat Phone
Where would Gotham City be if not for the Bat phone? In a world of hurt, that's where. Sure, Commissioner Gordon could still summon Batman with the Bat signal, Gotham's giant searchlight, but that wouldn't have done him, or Gotham City, any good during the day.

A prominent fixture in the 1960s TV series, the Bat phone was a bright red phone that connected directly to a similar looking phone in Bruce Wayne's manor, as well as the Bat Cave.

The term "Bat phone" is sometimes used today to describe specialized phones with direct connections or without any wait times, like those found in call centers, but it was also first revived in the modern comics era in Detective Comics #786 (November 2003) as an encrypted cell phone.
Invented: 1960s
Ram Horn Phone (Flintstones)

During the Stone Age, Bedrock was the place to be. Home of Fred and Wilma Flinstone, as well as a host of other memorable characters, Bedrock had it all, including telephones!

Similar in style to the Western Electric Model 500, the Flintstones called each other on phones consisting of a ram horn, which was used on a number of other prehistoric gadgets as well. Everyone's favorite modern Stone Age family even owned a wall-mounted phone! And if we're to take the Flinstones as being historically accurate, we can credit Fred as the first person to ever call into work sick.
Invented: 1960s
Western Electric Model 1500
Western Electric's Model 1500 sounded the death knell for rotary dials and ushered in the era of touch tone (push button) dialing. Essentially a touch tone replacement for the Model 500, it contained 10 buttons consisting of numerals 1-9, plus asterisk and pound keys.

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The beige model (pictured above) was ugly as sin, but these weren't the only standout features. Handset and line cords were hardwired, and the 1500 series would include several variants with additional feature-sets, such as 2-line sets, industrial phones, and other odds and ends.
Invented: 1963
Get Smart Shoe Phone
Who can ever forget Maxwell Smart's shoe phone? Not us, because this is only one of coolest inventions ever! Not only could Max make and receive phone calls on his size-whatever shoe, he could inflict some real damage, too. By dialing the number 117, the shoe turned into a gun, and we've yet to see a pair of Adidas that are able to do that (not even Gilbert Arenas').

Image Credit: tvacres.com
Of course, the shoe phone never took off as a viable item outside of being a Hollywood prop, and it probably never will. But the fact that it doesn't actually exist as a real-world device didn't deter us one bit from including it in our list. Why? Because long after the iPhone and BlackBerry become forgotten relics, people will still remember -- and wish for -- a shoe phone/pistol.
Invented: 1965
Motorola DynaTAC
It would be another decade before the first commercial cell phone would make it to market, but in 1973, much of the groundwork had already been laid. It was during this time that Motorola developed a prototype, the DynaTAC (DYNamic Adaptive Total Area Coverage) portable phone. But Motorola's work was far from finished.

Image Credit: Motorola
"The DynaTAC cellular system required phone calls to be switched from cell to cell as users traveled," Motorola explains. "Making that happen without a high rate of dropped calls required innovative engineering. And foremost, Motorola had to create a high capacity system that worked with both portable phones and mobile car phones."
Motorola tackled the problem by coming up with a concept involving a bunch of overlapping cells in a geographic area. Each cell contained a low powered transmitter that allowed frequencies to be bounced to cells that were farther away.
Invented: 1973