High-speed 3G Internet from GSM operators is already in full swing across Ukraine. But despite the relatively rapid development of the capital and some regional centers, progress in small settlements is not yet visible. The same cannot be said about 3G from Intertelecom. Therefore, today operator’s mobile Wi-Fi modems are quite popular, but few people know that you can make voice calls on the GSM network and use 3G Internet on the Intertelecom network on one smartphone. We decided to figure out how convenient and profitable it is.
Today in Ukraine you can find not many smartphones that allow you to simultaneously work with GSM and CDMA cards. For testing purposes, we were able to obtain two models without much difficulty HUAWEI Ascend P6-C00 and Lenovo A330e.
HUAWEI Ascend P6-C00 is a mid-level smartphone. At the same time, it has a very good IPS screen, a nice design in a thin metal body and normal performance. We won’t talk much about it, because in our editorial office we had a GSM version of the device, which is not much different from the P6-C00 model. You can read the review.
| HUAWEI Ascend P6-C00 GSM+CDMA (Black) |
|
| Type | Smartphone |
| SIM card type | Micro-SIM |
| Standard | CDMA 800, GSM 900/1800/1900 |
| GPRS, EDGE, EVDO: EV-DORA | |
| Number of SIM cards | 2 |
| operating system | Android 4.2 (Jelly Bean) + original Emotion UI shell |
| RAM, GB | 2 |
| Built-in memory, GB | 16 |
| Expansion slot | — |
| Dimensions, mm | 132.7×65.5×6.48 |
| Weight, g | 110 |
| Protection from dust and moisture | — |
| Accumulator battery | Li-Ion, 2000 |
| conversation - up to 28h/14h30m (2G/3G), standby - up to 416/315h (2G/3G) | |
| Diagonal, inches | 4,7 |
| Permission | 1280x720 |
| Matrix type | IPS |
| PPI | 312 |
| Dimming sensor | + |
| Touch screen (type) | touch (capacitive) |
| Other | Corning Gorilla Glass |
| CPU | HiSilicon K3V2 + GPU Vivante GC4000 |
| Kernel type | Cortex-A9 |
| Number of Cores | 4 |
| Frequency, GHz | 1,5 |
| Main camera, MP | 8 |
| Autofocus | + |
| Video shooting | 1920x1080 pixels, 30 fps |
| Flash | LED |
| Front camera, MP | 5 |
| WiFi | 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot |
| Bluetooth | 3.0 (A2DP) |
| GPS | + |
| IrDA | — |
| NFC | — |
| Interface connector | USB 2.0 (micro-USB) |
| Audio jack | 3.5 mm |
| MP3 player | + |
| FM radio | + |
| Type of shell | monoblock |
| Keyboard type | screen input |
| More | media player, video telephony, a-GPS/GLONASS receiver, accelerometer, gyroscope, Google services, light and proximity sensors, electronic compass, thermometer |
Lenovo A330e is new smartphone, recently appeared in the Intertelecom line, but it stands out only for its good autonomy and low price. It uses a 2-core Qualcomm Snapdragon 200 MSM8610 chip with a clock frequency of 1.2 GHz as a processor, the amount of RAM is only 512 MB, and the built-in 4 GB is expandable via microSD memory cards.
| Lenovo A330E Notify when on sale |
|
| Type | Smartphone |
| SIM card type | Mini-SIM |
| Standard | GSM 850/900/1800/1900, CDMA 1xEV-DO rev.A |
| High speed data transfer | GSM, GPRS, CDMA |
| Number of SIM cards | 2 |
| operating system | Android 4.3 |
| RAM, GB | 0,5 |
| Built-in memory, GB | 4 |
| Expansion slot | microSD/SDHC (up to 32 GB) |
| Dimensions, mm | 72.5×142.4×9.9 |
| Weight, g | 170 |
| Protection from dust and moisture | — |
| Accumulator battery | Li-Ion 2000 mAh (removable) |
| Operating time (manufacturer's data) | no data |
| Diagonal, inches | 5 |
| Permission | 854x480 |
| Matrix type | IPS |
| PPI | 240 |
| Dimming sensor | — |
| Touch screen (type) | + (capacitive) |
| CPU | Qualcomm MSM8610 200 + GPU Adreno 302 |
| Kernel type | Cortex-A7 |
| Number of Cores | 4 |
| Frequency, GHz | 1.2 |
| Main camera, MP | 2 |
| Autofocus | — |
| Video shooting | + |
| Flash | — |
| Front camera, MP | — |
| WiFi | 802.11 b/g/n |
| Bluetooth | + |
| GPS | — |
| IrDA | — |
| NFC | — |
| Interface connector | USB 2.0 (micro-USB) |
| Audio jack | 3.5mm |
| MP3 player | + |
| FM radio | + |
| Type of shell | monoblock (collapsible) |
| Housing material | plastic |
| Keyboard type | screen input |
As you can see, choosing a smartphone with CDMA + GSM support is enough difficult task. If you are not a demanding user, then you can limit yourself to the devices that we described above. But on the Intertelecom website in the “Smartphones - Exhibition Equipment” section you can find more interesting models that support operation in the CDMA network, although they are not supplied en masse to Ukraine.
For example, Samsung Galaxy Note 4 N9109W, which also supports GSM and CDMA networks, but according to the EV-DO Rev.B standard. Or Samsung Galaxy A3009 A3, which is more affordable option, but it doesn’t support EV-DO Rev.B either.
Let's immediately figure out the answer to this question. If you are not in the regional center, or even in the immediate vicinity of it, then 3G Internet from GSM operators may not appear there soon. Intertelecom is also not entirely ideal, but at least it exists in most of Ukraine.
At this link you can see a detailed map for each region.
Data transmission in the CDMA network is carried out according to two standards: EV-DO Rev.A and EV-DO Rev.B. The first one has more coverage, but is limited maximum speed data transfer up to 3.1 Mbit/s. The second provides data transfer speeds of up to 14.7 Mbit/s, but not such wide coverage. To watch YouTube videos in 720p quality, the speed of the EV-DO Rev.A is sufficient. In addition, you can count on comfortable surfing the Internet and fast loading of social networks. This has been tested on the basis of HUAWEI Ascend P6-C00 and Lenovo A330e, which can only operate according to the EV-DO Rev.A standard.
Real speed measurements do not show the highest results, but this good decision for those who live in small towns or often travel around the country.
If you use a GSM SIM card only for calls, and a RUIM CDMA card for the Internet, you can save a lot of money. If you have a smartphone with CDMA support, but you only want to use the Internet, then you should look at tariffs without voice services. They are much cheaper.
The “Super 3G Tablet 40” tariff plan includes 3000 MB/month for speeds up to 14.7 Mbit/s; if you exceed this limit, the speed is cut to 128 Kbit/s, and the volume of traffic is unlimited. The cost of this tariff is 20 UAH/month.
The “Super 3G tablet 70” tariff plan includes 5000 MB/month. The following conditions are the same, but the cost is 50 UAH/month.
For those who want to use the Internet only on selected days, tariffs with “Unlimited Mega Day” or “Vilniy Day+” with 1000 MB/day and 1500 MB/day, respectively, are suitable. The cost of these tariffs is 5 and 7 UAH for each day of use.
If your smartphone requires not only Intertelecom mobile Internet, but also voice communication, for example, with a landline number, you can connect to the Smartphone 30+ and Smartphone 50+ tariffs. The first includes 500 MB of traffic, unlimited calls on the Intertelecom network, as well as 40 minutes to the networks of other operators and landline numbers in Ukraine for a monthly fee of 30 UAH/month. In the second, for 50 UAH/month, 2 GB of traffic, unlimited calls to the Intertelecom network and 150 minutes to other networks and landline numbers are available.
The second card with 3G from Intertelecom is a completely working and already proven effective option mobile internet, including for residents of small towns or rural areas. And the ability to use two standards in one device itself is quite convenient, but it is not suitable for everyone due to the small selection of equipment in our country. Although it is quite possible to find a flagship GSM/CDMA smartphone, we see this in like Galaxy Note 4 N9109W, but its price will be much higher than that of the same HUAWEI Ascend P6-C00 and Lenovo A330e.
This material will look at CDMA phones, what kind of devices they are 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.
Currently, mobile devices of two standards are most widespread: GSM and CDMA. Each of them is a digital standard. But signal transmission in each of these cases is carried out differently. In the first case, it is divided into parts, each conversation occupies only a small part of the spectrum. In the second case, 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 first type. This standard was introduced much earlier and was already in active use at the time of the announcement of CDMA solutions. Now we will get an answer to the question: “CDMA phones - what kind of devices are these?” These are devices that are designed for use in mobile CDMA networks. Similarly, GSM solutions are used only in such cellular networks.
There are many devices designed to function in it. First of all, these are mobile phones of the appropriate standard. They have a relatively low level of functionality: conversation, text and multimedia messages. In some cases, this list can be expanded by data transfer. So the answer to the question: “CDMA phones - what are they?” - is the definition: “This is a device that allows you to make calls, send and receive text or multimedia messages, or connect to the Internet on CDMA networks.” The second type of device that can be used in such networks is modems. They can perform only one task - to transmit and receive data from the World Wide Web to a PC. Another type of device is mobile Wi-Fi routers. They do the same thing as modems, but in this case, a computer is not necessary to make the 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. This mobile devices, the capabilities of which are expanded through the use of special software. In this case, you can watch videos, listen to music, and communicate via in social networks... You can even use it as a mobile Wi-Fi router.
Until recently, there were quite a lot of operators in Ukraine cellular communications, which functioned in this standard. This includes Velton, Ukrainian Wave, 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 “wind down” its coverage, because of this, many of its subscribers were forced to switch to its direct competitor, Intertelecom, which then became the only national CDMA operator. The basis of its subscriber base is made up of dual-standard CDMA-GSM phones. Odessa is a city from which this operator began his victorious march across the country. Now its coverage covers most of the country. So owners of CDMA devices can work in Ukraine only on one cellular network.
Display diagonal is 5 inches and affordable price- these are the main advantages of this model. The hardware basis of the device is Snapdragon 200 with two computing modules. Each of them can theoretically be overclocked 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 included battery is 2000 mAh, which is definitely enough for 2 days of use. The operating system in this case is Android. The price for this device starts at 6,000 rubles.
One of the most available devices This standard is the Huawei Y321C CDMA phone. Although this is already a smartphone that runs Android. His computational basis There is a 2-core Snapdragon MSM8625 with a peak frequency of 1 GHz. Random access memory 0.5 GB, and the capacity of the built-in storage is “modest” 4 GB. The display diagonal is only 4 inches, and its resolution is 480x800. A battery with a capacity of 1350 mAh is responsible for autonomy. This is definitely enough for 1 day of work. The price for this device is 5,750 rubles.
This is the most affordable one at the moment mobile phone GSM - CDMA with a diagonal of 5.5 inches. Its main computing power is the 4-core Snapdragon 410 CPU. Each of its computing modules can increase its frequency up to 1.2 GHz. Comfortable work This device provides 1 GB of RAM and 8 GB of integrated storage. A 2500 mAh battery is responsible for autonomy, this is enough for 1-2 days battery life. The price of this gadget is 8,000 rubles.
There are also solutions for this digital standard and from 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 previously reviewed gadgets, this smartphone is dual-band and can operate simultaneously in both a CDMA network and GSM coverage. At the heart of this device is a 2-core CPU that can dynamically accelerate to 1 GHz. The amount of RAM is 768 GB, and the built-in storage capacity is 4 GB. Screen diagonal - 4 inches. The resolution of 800x480 allows you to display the output image with sufficient quality. The battery capacity allows you to count on 2 days of battery life without recharging.
The device is equipped with a variety of wired and wireless information transfer methods that allow you to fully realize its potential. You can buy such a device now for 7,500 rubles.
This article answered the question: “CDMA phones - what are they and what are they for?” The characteristics and cost of real models of this type of device, operators mobile communications who provide services in this standard in Ukraine. Any of the above models will be an excellent purchase and will allow you to communicate and receive data from the Internet.
In this review we will talk about the CDMA communication standard - we will discuss the characteristics and principle of operation, we will give a complete detailed description. Let's look at the differences from other standards, the spread of technology in Russia, and tell you about special smartphones.
Let's start the article by defining what it is, CDMA in a smartphone.
CDMA is (from the English Code Division Multiple Access) a second generation communication standard, which is an analogue of GSM.
Please note that these are not interchangeable technologies, but two methods of communication that compete with each other. What is the difference between CDMA and GSM? We'll talk in detail below.
The connection of two subscribers within the framework of this technology occurs through the allocation of a frequency spectrum, identification of connections is carried out using special codes.
For now, let's look at the advantages of the technology:
The standard was adopted in 1992, although developments took place much earlier, and has become widespread in many countries around the world. Until now, CDMA phones are actively used in various countries - in African countries, China and others.
CDMA-450 or CDMA 2000 appeared in 2000 - the standard operates at a latitude of 450 MHz and was actively spreading in Russia, mainly the CDMA communication standard was present in Moscow.
On this moment– in 2018, all CDMA operators in Russia were closed; not a single telecommunications company provides such services. In our country, a more familiar format is used - GSM.
Let us highlight the differences between the technology described above and GSM. Despite the fact that both standards belong to the same generation, they have a slight difference in operating principles:
What is the difference between WCDMA and CDMA - WCDMA technology is a derivative of SDMA and belongs to the third generation of mobile communications (3G). At the moment, these technologies cannot be used simultaneously and are a transitional stage to the latest standard - LTE.
In this part of the section, we will discuss dual-standard smartphones. At the moment, both second-generation standards described above are widespread throughout the world and cannot be used simultaneously - but there is one exception.
These are special devices designed for use in two networks simultaneously - the capabilities are expanded by installing special software. Smartphones are equipped with the ability to receive a signal in two different ways, characteristic of these networks.
There is enough a large number of smartphone manufacturers offering dual-band products with two SIM cards are such giants as Xiaomi, Lenovo, Huawei, HTC and many others. In addition, you can purchase a modem that operates in the desired range.
Due to the increasing number of questions about CDMA and GSM phones, and the resulting confusion, I will try to explain the difference between them. CDMA phones are cheaper in most cases, and many hope that they will work with Kyivstar, MTS or Life.
I can safely dispel this myth and explain in detail.
GSM is a communication standard that is actively used by our operators Kyivstar, MTS and Life. These operators have become firmly established in our everyday life, and many buyers use them when buying phones. Because in 90% of cases we buy phones with these particular operators in mind. Let us remind you that the GSM communication standard is based on a channel frequency division algorithm, using TDMA technology (common frequencies are divided by time), and medium-level security. There are four main GSM frequency bands, and accordingly phones are divided into three groups:
Services that are available to the user of a GSM phone are voice calls, SMS, fax exchange, roaming (convenient transition from network to network in other countries while maintaining the subscriber's mobile number), packet data exchange using WAP/GPRS/EDGE technologies. You can read about the differences from 3G and setting up mobile Internet in this section . As a disadvantage - operators GSM communications 3G Internet and telephony services are not provided.
The CDMA communication standard has firmly entered the US market as a development of cellular communications, and the name itself denotes the principle of working with frequencies. Each frequency is used at all times by all subscribers, for access they use special codes. It has a high degree of security, which eliminates the possibility of message interception, since the entire spectrum is occupied by noise, and each signal is accompanied by a unique code. A common band allows you to occupy one frequency and serve a larger number of subscribers. Network overload can only cause communication deterioration, but not the possibility of not being able to get through (GSM has this feature). The second feature is quieter and harmless frequencies for the subscriber.
CDMA2000 is a modern communication standard that is actively developing. Used 1.23 MHz frequency, and the packet data transfer rate is 2 Mbit per second. As you know, the power of the radiation itself is quite weak against GSM (250 mW versus 2W for GSM900). They can also argue that the harm of radiation has not been proven, but there is also no refutation.
To connect smartphones, either a special RUIM card is used, or the phone is simply flashed at the operator’s service center.
CDMA phones offer a rather unusual type of service - a direct landline number, mobile number, message transmission, packet data exchange using CDMA EVDO 3G technology at a speed of 2.3 Mbit per second. Quite loyal tariffs and a convenient option for purchasing a direct landline number make CDMA phones the most attractive in Ukraine. After all, the service of a direct city number for a GSM operator costs an average of 200 UAH per month for call forwarding fees. Here tariffs can be up to 30-50 UAH per month. Operators in Ukraine provide fairly high-quality service to subscribers CDMA Ukraine And Intertelecom.
There is one small inconvenience when buying a CDMA smartphone. You will not be able to check the connection on site at the time of purchase. Because it's understandable SIM cards there isn't, and some phones don't even have a slot to connect to. Therefore, further activation of your purchase occurs either at the operator’s service center or at its authorized dealer. When purchasing a new CDMA phone, you will be asked to sign a contract and you will be assigned your mobile and landline number (will be offered a choice from the available ones). After successful activation, all services will work on your smartphone. Yes, Intertelecom and CDMA Ukraine services work only under a contract, so be sure to take your passport to connect the phone.
We remind you that the IMEI of CDMA phones is not under the control of the Ukrfrequency Supervision database, and when buying a CDMA smartphone, you can be sure that your phone is on the gray, white, black or light green list. That's why CDMA Phones are especially popular. Regarding the lists and the current status of them, you can read
Now let's do it short review from the above:
