Usually, the f-stop number specified is the one that corresponds to the maximum possible diaphragm opening. Focal length is the distance in millimeters from the focal point of the image sensor to the optical center of the lens.
The 35 mm equivalent indicates the focal length at which a full-frame camera will achieve an angle of view that's the same as the one of the camera of the mobile device. It is measured by multiplying the native focal length of the camera by the crop factor of the sensor. The crop factor itself can be determined as the ratio between the diagonal distances of the image sensor in the 35 mm camera and a given sensor.
The rear cameras of mobile devices use mainly a LED flash. It may arrive in a single, dual- or multi-light setup and in different arrangements. One of the main characteristics of the cameras is their image resolution.
It states the number of pixels on the horizontal and vertical dimensions of the image, which can also be shown in megapixels that indicate the approximate number of pixels in millions. Information about the maximum number of frames per second fps supported by the rear camera while recording video at the maximum resolution.
Some of the main standard frame rates for recording and playing video are 24 fps, 25 fps, 30 fps, 60 fps. Information about additional software and hardware features of the rear camera which improve its overall performance. Sometimes, front cameras of mobile devices use auxiliary light.
Whenever they do, it is most often a screen flash or front LED flash. Information about the type of auxiliary light. Information about the number of pixels on the horizontal and vertical dimensions of the photos taken by the front camera, indicated in megapixels as well. Digital cameras are able to shoot videos at different frames per second fps. Information about the maximum possible fps for shooting videos at the maximum possible resolution.
The loudspeaker is a device, which reproduces various sounds such as ring tones, alarms, music, voice calls, etc. Information about the type of speakers the device uses. Some devices have the possibility to serve as Wi-Fi Hotspots by providing internet access for other nearby devices.
The technology has several versions, which improve the connection speed, range, connectivity and discoverability of the devices. Information about the Bluetooth version of the device. Bluetooth uses various profiles and protocols related to faster exchange of data, energy saving, better device discoverability, etc. Some of those supported by the device are listed here.
Type of the USB connector used by the device. With each following version the rate of data transfer is increased. Information about some of the most widely used connectivity technologies supported by the device.
List of some of the most common audio file formats and codecs supported standardly by the device. List of some of the most common video file formats and codecs supported standardly by the device. The capacity of a battery shows the maximum charge, which it can store, measured in mili-Ampere hours. The battery type is determined by its structure and more specifically, by the chemicals used in it. There are different battery types and some of the most commonly used in mobile devices are the lithium-ion Li-Ion and the lithium-ion polymer battery Li-Polymer.
Information about the electric current amperes and voltage volts the charger outputs. The higher power output allows faster charging.
Dimensions : Brand Brand name of the company that manufactures the device. Noa Model Model name of the device. Spectrum from the former Nextel network and Clearwire should accelerate its 4G deployment, its unlimited data plan continues to be a draw, and the next iteration of LTE technology offers a chance for Sprint to be more competitive with its rivals.
Network breadth and speed are increasingly vital weapons as the carriers clobber each other, with many resorting to picking subscribers away from rivals for growth. The term LTE, in particular, holds tremendous cachet thanks to the truckloads of marketing dollars spent by the carriers to link those three letters to the concept of "blazing-fast speeds.
They each have hundreds of markets covered. Earlier this month, T-Mobile lit up markets with LTE after six months of work, calling into question why Sprint has taken four times as long to accomplish slightly less. Sprint's struggles have only provided ammunition to T-Mobile CEO John Legere, a relatively new personality on the wireless scene who's eager to take shots at his larger rivals.
So, what's the problem? Breanne Speer was holding up the checkout line again. The year-old graphic designer last month had been frantically attempting to pull up a coupon on the Chrome browser of her Samsung Galaxy S3 to use at a register at the World Market in the northern part of San Antonio.
The only problem: her Sprint connection wasn't cooperating, and her coupon wouldn't load. Flustered by the growing line behind her, Speer she gives up on using the coupon, negating the reason she came to that store in the first place. Speer's dilemma underscores the continued challenges that the company faces even in markets where the company has upgraded its network. One of the primary issues has been the lack of spectrum, or the radio airwaves necessary to ferry bits of data from the phone back to the network.
Sprint has a thin patch of spectrum that it is currently using for LTE. While LTE is a faster wireless technology, a lot of spectrum is necessary to ensure a speedy connection. Tarazi said the lack of robust spectrum hasn't slowed down its deployment, and that the company was turning on every site it could.
Sprint's spectrum crunch is expected to ease quickly. The company recently shut down its Nextel business, and plans to repurpose the spectrum from that network for its 4G LTE business. It also plans to tap recently acquired Clearwire's spectrum for additional capacity.
Wanted: More fiber Another key problem has been the lack of backhaul, or the connection between the cellular tower and the central network. He previously was a senior editor at Computerworld. Here are the latest Insider stories. More Insider Sign Out. Sign In Register. These customers can log in to their accounts to check upgrade eligibility and view deals on the latest devices, including offers for a free 5G phone.
Customers only need to take a few easy steps:. Select devices that are not compatible with the T-Mobile LTE or 5G network will need to be upgraded to continue getting service, including the ability to make calls depending on your location.
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