From Tin Cans to Touchscreens: The 40 Most Important Phones in History
Motorola Bag Phone
Motorola designed its bag phone with a shoulder strap so that high power execs could chat while on the go, but because it was so heavy, most people who owned one usually left it in the car.

Image Credit: Motorola
The phone itself wasn't very heavy, and the bulk came from the transreceiver and battery, both of which were stored in the bag. The phone was surprisingly capable, and owners could expect up to two hours of talk time and 48 hours of standby time.
Invented: 1992
Motorola StarTAC
Picking up where the MicroTAC left off, Motorola's StarTAC took the flip phone concept to a new level. It was the first cell phone to sport a clamshell design, a concept that would remain popular for over two decades.

Image Credit: puremobile.ca
At the time of its release, the StarTAC was the smallest cell phone available, but it was still expensive, checking in at about $1,000. The StarTAC was able to receive SMS messages, and a later version would allow users to send texts as well. It had a vibrating ring, weighed 3.1 ounces, and used an optional lithium-ion battery.
Invented: 1996
BlackBerry
Everybody's familiar with the BlackBerry, the creation of Canadian company Research in Motion (RIM), which successfully meshed PDA functionality with a cell phone in a single unit. And let's not forget the QWERTY keyboard, which has become a staple of BlackBerry devices.

Image Credit: Gizmodo
But what you might not know is that the BlackBerry started off as a glorified pager, not a smartphone. In 1998, RIM created a wireless handheld device called the RIM 850/950. The two-way pager included a thumb-keyboard and was capable of handling email, contacts, and calendaring.
A year later, the BlackBerry 5790 was born, kicking off the transition from a pager-like device to more of a PDA. Several models would follow, and the BlackBerry became so popular that it was dubbed the "CrackBerry." Now a dominant player in the smartphone market, RIM trails only Symbian in smartphone OS market share.
Invented: 1998
Nokia 3210
Surprisingly modern for its time, the Nokia 3210 was a smashing success, though not for any single reason. All tallied, Nokia sold about 160 million units of the 3210, earning it a spot on our list.

Image Credit: quangcaosanpham.com
The Nokia 3210 was one of the first cell phones to sport an internal antennae. It also included a backlit monochrome screne, 40 ringtones, predicative text (T9), picture text messaging, and even a bit of gaming capabilities. Three games came preinstalled, including Snake, Memory, and Rotation.
Another popular feature, the Nokia 3210 also supported user exchangeable front and back covers.
Invented: 1999
Sharp J-SH04
You probably never owned Sharp's J-SH04, and neither did anyone you know (it was only released in Japan). You've never even seen it, and we're willing to bet this is the first you've heard of this cell phone. So what the frack is it doing on our list?

Image Credit: Sharp
Well, the J-SH04 was the first mobile phone ever to include a built-in camera, a feature now commonplace on even the lowliest of cell phones. It included an atrocious 110,000 pixel CMOS image sensor for taking awful pictures that could be viewed on the device's 256-color STN display.
Cell phone camera quality has improved significantly in the past decade to the point of rivaling some standalone point-n-shoot digital cameras. And yet one of the most popular uses is still for snapping sultry shots of uncovered body parts and then regretting it later, isn't that right Greg Oden?
Invented: 2000
Sidekick (Danger Hiptop)
If you don't remember "Hiptop," maybe you'll recognize the name "Danger," which was associated with a massive data outage that affected about 800,000 smartphone users in 2009 (and is Austin Powers' middle name). Sidekick owners lost all kinds of personal data, including emails, contacts, photos, and more, all the result of a server failure. So how does Danger fit into all this?

Image Credit: Engadget
The data center that failed belonged to Microsoft, but had been purchased from Danger in 2008. As Microsoft explains it, "Sidekick runs on Danger's proprietary service that Microsoft inherited when it acqjuired Danger in 2008. The Danger service is built on a mix of Danger created tecnologies and third party technologies," which was Redmond's way of passing the buck.
The still popular Sidekick began life as the Danger Hiptop in 2002 before being rebranded under T-Mobile. A trademark characteristic of the Sidekick is its slide-out screen (which flipped up in earlier models) revealing a physical QWERTY keyboard underneath. As unlimited text messaging plans started to emerge, the Sidekick became extremely popular among teenagers and young adults.
Invented: 2002