In an e-mail, she wrote, "This particular device [the Rumor2] is not considered a smartphone. There is not a true definition of a smartphone, but it is generally accepted that a 'smartphone' is one that can sync more than one email account Webmail, Gmail, etc. This phone, while it does have Internet access, does not sync email onto the desktop. Reith said LG's reasoning supports IDC's finding that the Rumor2 doesn't have a high-level OS in the sense that its OS does not allow applications to run entirely on the phone separate from the network.
With the addition of software, Sprint could have changed that capability but chose not to, Reith noted. In summary, just about everyone agrees that there is no precise, standard definition of the smartphone. Llamas said IDC's take has been criticized and praised alike from many parties. Even though there are disparities in some definitions, analysts tend to report roughly the same numbers for shipments of smartphones, Reith said. Part of the reason is that analysts pay attention to one another's numbers and to what the vendors call a smartphone, Reith and Llamas said.
Reith said he couldn't think of a single device categorized by IDC as a smartphone to which Gartner or other major analyst firms wouldn't agree. Still, the analysts acknowledged that the question of what a smartphone is can be confusing and even mysterious for the public. One analyst said that the CTIA's definition "probably needs to be updated," but Llamas said picking a proper definition can be a delicate matter. Matt Hamblen is a multi-media journalist covering mobile, networking and smart city tech.
Cell phones are smaller than smart phones, and are therefore easier to carry around. Smart phones are a combination phone, computer, Web browser, camera, GPS and more. Therefore, if you lose your smart phone, you lose everything. Smart phones have more advanced capabilities than cell phones. Smart phones are a Personal Digital Assistant and a cell phone in one machine [source: Martin ].
Electronics Cell Phones Would a cell phone work on a submerged submarine? Electronics Cell Phones Why is a cell phone called a cell phone? The first category of touchscreens, called resistive touchscreens, can be touched with any type of material and they will still work.
A pencil works just as well as a finger. You can activate the screen even if wearing gloves. Resistive touchscreens are found in an automated teller machine ATM and at checkout counters in stores, where you sign your name for a credit purchase on the display screen.
Resistive touchscreens are composed of two thin layers of conductive material under the surface Fig. When you press down a resistive touchscreen, it physically indents, causing the two layers to touch, completing the circuit and changing the electrical current at the point of contact.
The software recognizes a change in the current at these coordinates and carries out the action that corresponds with that spot. Resistive touchscreens are also known as pressure-sensitive screens. Only one button at a time can be pressed. If two or more buttons are pressed at once, the screen does not respond. Smartphones use the second basic category of touchscreens, called capacitive touchscreens Fig. A capacitor is any device that stores electricity.
Glass, being an insulator, does not conduct electricity. Even though glass contains ions, they are locked into place, stopping electricity from flowing through. So, the glass screen must be coated with a thin transparent layer of a conductive substance, usually indium tin oxide, which is laid out in crisscrossing thin strips to form a grid pattern.
This conductive grid acts as a capacitor, storing very small electrical charges. When you touch the screen, a tiny bit of this stored electrical charge enters your finger—not enough for you to feel but enough for the screen to detect. As this electrical charge leaves the screen and enters your finger, the screen registers a voltage drop, the location of which is processed by the software, which orders the resulting action. This tiny bit of electrical current enters your finger because your skin is an electrical conductor—primarily due to the combination of salt and moisture on your fingertips, creating an ionic solution.
Your body actually becomes part of the circuit, as a tiny bit of electricity flows through you every time you use the touchscreen on your phone. Smartphone technology is evolving at a dizzying pace.
Twenty years ago, no one envisioned that people would someday take more pictures with their cell phones than with their stand-alone cameras. Thanks to the intersection of chemistry and innovation, the possibilities are limitless. Gardiner, B. Ask an Engineer. Brian Rohrig is a science writer who lives in Columbus, Ohio. What should you do with your cell phone when it dies? Recycling it offers both economic and environmental benefits. Careers Launch and grow your career with career services and resources.
Communities Find a chemistry community of interest and connect on a local and global level. Discover Chemistry Explore the interesting world of science with articles, videos and more. Hence, android phones are just a subcategory of Smartphones. Choosing between the two main players in mobile depends on what features and specs are most important to you. Save my name, email, and website in this browser for the next time I comment.
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