In this article, CDMA phones will be considered, what kind of devices are these and in what cases you simply cannot do without them. The characteristics of real models will also be indicated and recommendations regarding their purchase will be given.
Two main standards for mobile communications
At the moment, the most widely used are mobile devices of two standards: GSM and CDMA. Each of them is a digital standard. But the signal transmission in each of these cases is carried out differently. In the first case, the frequency range is divided into parts, each conversation occupies only a small part of the spectrum. In the second case, the encoding allows the subscriber to use the entire radio frequency resource. As a result, in this case, the quality of communication is an order of magnitude better. But today devices for mobile networks of the first kind have become more widespread today. This standard was introduced much earlier and at the time of the announcement of CDMA-solutions was already actively used. Now we get the answer to the question: “CDMA phones - what kind of devices are these?” These are devices that are targeted for use in mobile CDMA networks. Similarly, GSM solutions are used only in such cellular networks.
Supported Devices
A lot of devices are oriented towards functioning in cellular CDMA networks . First of all, these are mobile phones of the corresponding standard. They have a relatively low level of functionality: conversation, text and multimedia messages. In some cases, this list may be extended by data transfer. So the answer to the question: “CDMA phones - what is it?” - is such a definition: "This is a device that allows you to make calls, send and receive text or multimedia messages, or connect to the Internet in CDMA networks." The second type of device that can be used in such networks is modems. They can perform only one task - to ensure the transfer and receipt of data from the global web to a PC. Another type of device is mobile Wi-Fi routers. They do the same thing as modems, but only in this case, the presence of a computer is not necessary to make a connection. The router creates a wireless computer network to which any device with a Wi-Fi transmitter can be connected. The last type of device is smartphones. These are mobile devices, the capabilities of which are expanded through the use of special software. In this case, you can also watch videos, and listen to music, and chat on social networks ... Even as a mobile Wi-Fi router, you can use it.
Operators in Ukraine
Until recently, in Ukraine there were quite a lot of mobile operators that functioned in this standard. This is Velton, and Ukrainian Wave, and People.net, and Intertelecom. But now only the last two continue to provide services. The first two of them were acquired by Intertelecom, their subscribers joined its cellular network. In turn, People.net, due to economic difficulties, began to “curtail” coverage, because of which many of its subscribers were forced to switch to its direct competitor, Intertelecom, which after that became the only national CDMA operator. The basis of its subscriber base is made up of two-standard CDMA-GSM phones. Odessa is the city from which this operator began its victorious march around the country. Now its coverage covers most of the country. So the owners of CDMA devices can work in Ukraine in only one cellular network.
Lenovo A330e
A diagonal of 5 inches and an affordable price are the main advantages of this model. The hardware basis of the device is the "Snapdragon 200" with two computing modules. Each of them can theoretically accelerate to 1.2 GHz. The memory subsystem is represented by 512 MB of RAM and 4 GB of integrated data storage. The capacity of the complete battery is 2000 mAh, this is definitely enough for 2 days of use. The operating system in this case is Android. The price of this device starts at 6,000 rubles.
Huawei Y321C
One of the most affordable devices of this standard is the Huawei Y321C CDMA phone. Although this is already a smartphone that operates under the control of Android. Its computational basis is the 2-core Snapdragon MSM8625 with a peak frequency of 1 GHz. RAM 0.5 GB, and the capacity of the internal drive is "modest" 4 GB. The diagonal of the display is only 4 inches, and its resolution is 480x800. The battery capacity of 1350 mAh is responsible for autonomy. This is definitely enough for 1 day of work. The price of this device is 5750 rubles.
Lenovo A805e
This is the most affordable GSM mobile phone - CDMA with a diagonal of 5.5 inches. Its computational core is the 4-core CPU Snapdragon 410. Each of its computing modules can increase its frequency to 1.2 GHz. Comfortable operation on this device is provided by 1 GB of RAM and 8 GB of integrated drive. The battery for 2500 mAh is responsible for autonomy, this is enough for 1-2 days of battery life. The price of this gadget is 8000 rubles.
HTC T329d
There are also solutions for this digital standard and HTC. CDMA-standard phones from this manufacturer, although not so often, can still be found. One of the most affordable models is the HTC N329d. Like all the gadgets previously discussed, this smartphone is dual-band and can work simultaneously in a CDMA network and in GSM coverage. At the heart of this device is a 2-core CPU, which can dynamically accelerate to 1 GHz. The amount of RAM is 768 GB, and the capacity of the built-in drive is 4 GB. The diagonal of the screen is 4 inches. The resolution of 800x480 allows you to display the displayed image with sufficient quality. The battery capacity allows you to expect 2 days of battery life without recharging.
The device is equipped with many wired and wireless methods for transmitting information that allow you to fully and fully reveal its potential. You can buy such a device now for 7500 rubles.
Summary
This article answered the question: “CDMA phones - what is it for devices and what are they for? ” Also indicated are the characteristics and cost of real models of this type of device, mobile operators that provide services in this standard in Ukraine. Any of the above models will be a great purchase and will allow you to communicate and receive data from the Internet.