iPhone with two SIM cards: are there, how to use
When the usual dispute “Android versus iPhone” begins on the Internet, Android users traditionally win. the iPhone did not support two SIM cards, and this has already become a widespread function. It was strange why a leading smartphone manufacturer would ignore this characteristic of a smartphone. Now, owners of Android smartphones have nothing to cover, because the iPhone with two SIM cards is no longer an unprecedented miracle of the Chinese industry. Together with technology, the iPhone itself is evolving, which has learned to work with two cards. this leaves the “apple” products out of competition.
Are there dual SIM iPhones??
But Apple finally heard the requests of users, and real smartphones appeared on the world markets that support the work of two SIM-cards. the 2018 model year:
- iPhone XS;
- iPhone XS Max;
- iPhone XR.
Apple also distinguished itself here. the second SIM-card for the iPhone will not look like the usual cards. Manufacturers use eSIM technology, that is, they use an embedded module. It is impossible to pull out the device, but this is already progress, because earlier “apple” products were equipped with only one card. I had to choose between important numbers or carry a push-button “dialer” with me. In fact, the device now works with two SIM cards. an embedded and a physical card. The principle of use is almost identical to working with cards in other multi-SIM phones. Both users and experts agree that this is a breakthrough in the world of technology, and the iPhone will never be the same again.
How eSIM works?
You will have to get used to the operation of the iPhone with 2 SIM cards. the principle of operation of eSIM is different from the usual cards. For correct operation, Dual SIM Dual Standby is used. To use cards of different operators, a new smartphone should not be tied to a specific operator, otherwise the physical card must work in the same cellular network. In order for the eSIM to work, a number of steps are taken to connect.
- Scanning a machine-readable (QR) code. In the settings, go to the “Cellular” section, find the “Add tariff” item. Point the camera at the code provided by the selected operator.
- ESIM connection in the operator’s application. In the AppStore, download the operator’s specialized application and follow the instructions to activate the tariff.
- Manual input of information. In the cellular settings, there is an item “Enter data manually”.
It is also important to specify which SIM card will be used by default. for making calls, writing SMS messages, using the Internet and using FaceTime iMessage programs. The other card will only work with calls and messages, as well as the Internet. No need to select a phone number each time you dial a number, iPhone will remember your preferred choice.
SIM-cards are managed from the settings of the cellular network, the owner of the smartphone decides to change the preferences. Keep in mind that only one SIM card should work on the Internet, so select a favorable tariff in advance. Otherwise, there will be no problems with eSIM, experts believe that the future belongs to similar technologies.
Manual data entry
If necessary, you can manually enter your plan information. Select the “Enter Data Manually” option at the bottom of the iPhone screen.
You can store multiple eSIM cards on your iPhone, but you can only use them one at a time. To switch between eSIM cards, go to the “Settings” section, click “Cellular” or “Mobile data”, select the desired tariff plan and click “Turn off this line”.
The following sections detail further iPhone settings.
In which countries will the iPhone XS and iPhone XR work with dual SIM (eSIM)
The advantages are obvious, but As of today, eSIM is supported only in 10 countries of the world: Austria, Canada, Croatia, Czech Republic, Germany, Hungary, India, Spain, Great Britain and (of course) the USA. over, in America, the technology has not even been implemented by all the leading mobile operators. for example, Sprint is just thinking about the development of eSIM, now the company is not able to name even an approximate time frame.
Apple first used eSIM a year ago. in Apple Watch Series 3. At the same time, both experts and ordinary users started talking about the fact that soon the technology would migrate to Apple smartphones. after all, support for a second SIM card would be a very weighty argument for iPhone buyers from China, India and the Philippines, where subscribers are already accustomed to using two SIM cards in order not to use roaming, quickly change their mobile operator and enjoy all the benefits of communication on two mowing lines.
Apple Watch Series 4 vs Apple Watch Series 3. what’s the difference?
Is eSIM now booming around the world? It’s not as easy as it seems. Yes, operators are probably interested in this attractive feature for subscribers. after all, it is a potentially very interesting way to make money. But there is also a downside to the coin. now it will be much easier for a subscriber to go to a competitor! While the second argument clearly prevails over the first. for example, the US Department of Justice is already investigating ATT, Verizon and the GSMA. The agency suspects operators that they are deliberately in no hurry to transfer users to eSIM-compatible devices. In Russia, where eSIM is still prohibited by law, operators are also openly afraid of the new technology (although at the same time they show a certain interest in it. after all, you can not only lose, but also earn).
But now, with the release of the new iPhone XS, XS Max and iPhone XR, progress cannot be stopped for sure. Apple and life themselves will force operators to actively introduce eSIM to the masses. This means that our life will become even more convenient over time. What is not real innovation?!
Dual SIM: a physical SIM outperforms an electronic
Mini-tutorial: how to insert a pair of SIM cards into a Chinese iPhone XS Max
Despite the fact that eSIM can be launched in Russia today, local operators are not going to support virtual cards yet. Therefore, we are talking about the confrontation between the Chinese two-SIM iPhone XS Max and the rest of the “usual”.
The advantages of the iPhone XS Max for 2 SIM are enough:
- You can use advantageous call packages on one and inexpensive Internet tariff on the second SIM card
- There is a great opportunity to separate personal and work conversations
- If you work in conditions of maximum mobility, accurately assess the use of the Internet from the SIM, where it works best in a particular location. that is why I bought a two-SIM card
- Abroad, a local operator flies into the second slot perfectly, and this is especially useful if you are on a business trip
- If you talk a lot in a couple of slots, you can put a couple of operators with profitable conversations in a specific direction
You can customize the operation of the second SIM in detail in the “Settings” “Cellular” menu: you can change the card for cellular data, the default operator for calls and labels for tariffs.
How a dual-SIM iPhone works
Yes, in some cities in Europe and the United States, eSIM is already in full swing, and this technology is much more convenient than a physical card. Nevertheless, we are talking about our realities, and here the Chinese iPhone XS Max is definitely noticeably more comfortable.
How to install two SIM cards in an iPhone
To remove the tray from the body of the device, use a paper clip or similar tool. insert it into the small hole on the side of the phone and push.
The platform for installing SIM cards will slide out.
There is a bevel on the corner of each SIM card, which allows you to install it exactly the right side.
The tray is designed to be used simultaneously from both sides. One card is inserted into the top platform, and the second into the bottom.
After that, carefully insert the tray with two nano-SIMs into the device in the same position as it was originally. You can only insert it with one side, so it will be very difficult to make a mistake.
It is important for Honor to protect the SIM card with a personal PIN code. If this ID is used, note the location of each card in the tray
When prompted, enter the PIN of the upper and lower card accordingly.
How Dual SIM on the iPhone Works
What are the advantages and disadvantages of dual SIM phones
What are the advantages and disadvantages of dual SIM phones
The first dual SIM phones appeared five years ago, in 2006. Samsung was at the origin of this trend in our country, and Fly began to work in this direction practically in parallel with it. Today models with support for two SIM-cards are available not only from these manufacturers, but also from Fly, Philips, Acer, LG, Gygabyte. The demand for such phones is steadily growing, and, as a result, the supply is also increasing. Let’s consider the main differences between phones with two SIM-cards, as well as their main advantages and disadvantages, knowledge of which will help to make the right choice between several models.
One or two radio modules: what’s the difference
Dual SIM phones are very different from each other. And it’s not about the form factor, screen parameters or electronic “stuffing”. the main difference lies in the number of radio modules. In a regular phone with one SIM card, there is only one radio module. A dual SIM phone can have one or two radio modules. In practice, it works as follows. In a phone with one radio module, both cellular operators can work simultaneously only in standby mode. When the phone receives an incoming call, the second number becomes temporarily unavailable (as if the SIM card was in the switched off phone). The same goes for Internet access. while one operator is sending and receiving GPRS traffic, the other is inactive. But keep in mind that some budget phones do not even have this option, and as a result, you have to constantly reboot the phone to select another active SIM card. They have only one merit. there is no need to open the case and rearrange the cards from place to place. Fortunately, such phones are on sale less and less, and new models with such a “feature” no longer appear.
In a phone with two radio modules, both operators are available at any time. If an incoming call arrives on one of the SIM-cards, the second call will be on hold, and you can always quickly switch to it and continue communication with another interlocutor.
Dual SIM phones Philips, Fly, Samsung
Each mobile phone manufacturer solves the problem of switching between two different operators differently. Some models have a toggle button on the side, other models have two buttons for calling a subscriber at once, while others have it done at the software level (the selection function is activated only where it makes sense to choose in the phone book or in the browser). By the way, all phones with two SIM cards have two IMEIs at once, this fact should be taken into account when searching for a stolen phone and when registering a phone.
The benefits of dual SIM phones
The first advantage of mobile phones with two SIM-cards is precisely that they really allow you to save on communications. The tariffs of mobile operators often allow communication within the network for a purely symbolic fee, but calls to other operators are usually too expensive. Therefore, the purchase of such a phone and two SIM-cards will help to stay in touch simultaneously in two networks and at the same time not spend too much money on calls. The second saving option. the use of one operator for the call service, and the second. for surfing the Internet.
The second advantage is that when buying one phone, you get rid of the need to carry two devices with you at the same time or periodically rearrange two different SIM-cards on one mobile phone. In the first case, it will save space in your s and bags, and your hands will be freer if you do not have to hold two phones at the same time. In the second case, you simply save your nervous system. if you need to urgently call from the second SIM card or not miss an important call within the network of the second operator, every second can be decisive.
Often you can save money on buying a phone with two SIM cards. Recently, more and more budget models have appeared in this segment. A special merit here belongs to the manufacturer Fly, in whose assortment you can find a lot of devices in the budget and medium price categories. It is noteworthy that this particular company has almost completely abandoned the production of ordinary phones with one SIM-card, but the variety of models with two SIM-cards is impressive. The assortment includes modern touchphones, budget monoblocks, universal sliders and clamshells, some of the models are decorated with rhinestones and are aimed exclusively at the female audience of buyers. And here is the main competitor. Samsung. is in no hurry to bring budget solutions with two SIM-cards to the market, so its models are traditionally more expensive. The most famous devices from this manufacturer are the D880 Duos, C5212 Duos, C6112 Duos and B7722 Duos. The first in this list of models. D880 Duos. became really the first two-SIM phone from this manufacturer and the first phone in this segment to gain popularity in Russia (although Fly officially took the lead, this event did not receive due publicity).
Famous Samsung D880 Duos
Speaking of inexpensive dual SIM mobile phones, we cannot ignore the phones made in China. In particular, the Anycool trademark. At a very affordable price, Anycool phones have almost everything that a modern phone should have: a touch screen, a Wi-Fi module, support for microSD memory cards, a module for watching mobile TV and much more. Therefore, if you are not confused by the origin of the phone and the little-known brand, you may well become the owner of such a phone. By the way, among the “Chinese” you can find phones even with three SIM-cards.!
An example of a China-made dual-SIM phone Anycool T808
Disadvantages of Dual SIM Phones
If you become the owner of a phone with two SIM cards that work at the same time, you will surely notice how quickly the battery will drain. over, the decrease in the charge will occur faster even when the phone is in standby mode. The fact is that both cellular operators exchange signals with base stations at certain points in time, and this just requires some activity, which leads to depletion of the battery. If you regularly use your mobile phone to make calls, send messages, surf the Internet or watch multimedia, you will need to recharge it even more often.
Most phones with two SIM cards will need to be recharged every one to two days, even if they do not have a huge touchscreen (as you know, the display is one of the most resource-intensive parts of the phone).
There are exceptions to this rule. manufacturer Philips, famous for its Xenium line of devices, also makes dual SIM phones. The peculiarity of this line is that all models in it are capable of working for a very long time without recharging. In practice, dual SIM Xenium phones under moderate load can last 4-5 days until the next recharge. The X806, X503 and 9 @ 9w models have this feature.
If you use the services of two operators and have two phones at once, then in case of theft, loss or breakdown of one of them, the second one will always remain with you, like one of the SIM-cards. If you have a dual SIM phone, you will lose everything at once. and a phone, and two SIM-cards, and the ability to quickly make an important call. Therefore, some people still prefer two separate phones over one.
The next point cannot be considered an obvious drawback, but it can still bring some inconvenience. The fact is that among the devices with two SIM-cards there is a very small selection of smartphones. The only exceptions are the manufacturers Acer (model DX900), Gigabyte (model GSmart S1205) and Philips (model V816). That is, if you want to have a phone with two SIM cards and simultaneously use multitasking mode, an advanced organizer, a functional mail client, view and edit documents created in the MS Office package, your choice will be very, very limited. By the way, Nokia fans can also be disappointed. this manufacturer has never previously released a dual-SIM model for sale in Europe, although recently there was information about the release of a budget phone with two SIM-cards, which will be sold here too.
An example of a dual SIM smartphone Gigabyte GSmart S1205
What the future holds for the dual SIM phone segment
Given the current trends in this segment, a few simple assumptions can be made. For example, phones of the budget level and mid-range price category will continue to appear on sale. In parallel, we should expect the emergence of smartphones on two SIM-cards running Android OS and the expansion of the range of smartphones in particular. Therefore, if you want to have more options for choosing a smartphone with dual SIM cards, it may be worth waiting for the appearance of new devices in this segment. In general, the fashion for dual-SIM phones does not work, this is evidenced by at least the fact that many well-known manufacturers are trying to introduce at least one or two such devices into their range of models. Therefore, if you strive to save money on mobile communications or the mobile Internet, but are tired of using two different phones or rearranging SIM cards, dual SIM phones will be the best choice for you.
Where is the iPhone XS Max with two SIM cards officially sold?
iPhone XS Max with support for a pair of SIM cards is now officially sold only in China.
It will be extremely problematic to get the device in other countries, and there will also be problems with warranty service.
Every year, the repair of iPhones brought from other countries turns into a lottery. Someone will be lucky and the device will be repaired under warranty, while someone will have to pay for the work of the repairmen from their own s.
Which iPhone has 2 SIM cards
Seriously though, Apple has cheated again.
Support for two SIM-cards went only to the largest smartphone, the iPhone XS Max. If you want to get this opportunity in a regular iPhone XS or a budget iPhone XR, you will have to get a lip-bending machine.
Don’t like the “shovel phone”? Have to forget about two SIM cards.
How convenient is it to use 2 SIM cards in iOS
Alas, iOS is completely unsuitable for dual SIM use on the iPhone XS Max. Everything is bad.
Yes, a separate menu with settings was added to the system, allowed to select a priority card for each contact, and even displayed “SIM cards” icons on the status bar.
But you will not be able to understand which SIM you received incoming calls on. The entire call history will be mixed in the log of the built-in Phone application.
Add to them the unification of the history of phone calls and calls through instant messengers. and you get a real dump.
By the way, although third-party dialers for iOS are present, it is impossible to fully integrate them into the system and replace the standard application.
How much is the iPhone XS Max with two SIM in Russia
The difference in price between models with a comparable memory capacity ranges from 15 to 25 thousand rubles. Is it worth paying so much for a second SIM card??
Do not forget that resellers are still selling iPhone SE for 20 thousand rubles.
The situation is unlikely to change, because devices with support for two SIM-cards will not officially appear on sale. This means that resellers will dictate prices.
Is it convenient to use two SIM at the same time on the iPhone XS Max
The vast majority of dual SIM smartphones have only one radio module, the new iPhone is no exception. Only some models have a pair of GSM units and are able to simultaneously receive calls to both SIM cards.
Those who like to talk on one SIM-card will receive regular missed calls on the second.
The Internet can also be connected from only one card; to access the network from the second, you will have to switch the parameter in the settings.
What problems can the owner of a dual-SIM iPhone XS Max have in Russia?
The first dual-SIM iPhone could be a problem. We have not yet seen such modules in operation, we do not know their weaknesses and shortcomings.
In the event of a breakdown, such modules will have to be repaired unofficially, and at first there will be a shortage of spare parts and skilled craftsmen.
Add to this the new design of the iPhone XS Max itself, which no one in Russia knows yet. As a result, you will have the most problematic iPhone for repair of all those presented at the autumn presentation.
How is 2 SIM in iPhone XS Max treated in other countries
For reference, the idea of two “sim cards” in one device is common only in young, developing countries. China, India, Iran. Well you get the idea.
In Europe and the USA, almost no one bites on two SIM cards, because this topic is not respected there. Doesn’t it seem strange? Decent, advanced people don’t want two sims.
Five smartphones with dual active SIM cards
Two active SIM-cards continue to be a demanded function, although once the sunset was predicted for such a mode of operation of the phone’s radio modules. Its main disadvantage was considered to be the high consumption of the smartphone’s battery and the high cost of the device itself, associated with the complexity of the implementation of the technology itself. Let’s see if this is the case at the moment.
Two active SIM-cards (Dual SIM Active) allow you to simultaneously talk on one SIM-card and receive a call on the other, which is very convenient if the other SIM-card is either busy or unavailable for Honor in ordinary dual-SIM phones at this time. Also, Dual SIM Active allows you to use one SIM card only to access the Internet, for example, via LTE, and to receive calls on the other. In this case, both SIM-cards will not interfere with each other and will always be active. Let’s see which modern smartphones retain support for two active SIM cards. Are they really very expensive and limited in battery life??
HTC One dual SIM (RUR 23,000)
Despite last year’s announcement of the model, it does not lose its popularity, and the price, compared to June 2013, has not dropped so much and remains quite high. Which is not surprising, because the filling of the device is still relevant. a 4-core Qualcomm Snapdragon 600 APQ8064T processor, 1700 MHz with 2 GB of RAM, an Adreno 320 graphics chip, 32 GB of internal memory, which, by the way, can be expanded with a microSD memory card (TransFlash ) up to 64 GB. Add to that the 4.7-inch S-LCD3 screen with a resolution of 1080 x 1920 pixels and a pixel size of just 2.0 micrometers. A 4-megapixel CMOS matrix with flash and Full HD video recording is responsible for photo and video, for data transfer. USB, HDMI, Wi-Fi 802.11 a / ac / b / g / n, Bluetooth 4.0, GPS / GLONASS, NFC and infrared.
Now about the main thing. A 3G smartphone running on Android 4.2 OS supports two active micro-SIM cards and can work stably all day long, even if you listen to music on it for 2-3 hours, take about 50-100 pictures and chat on social networks using alternately mobile Internet and Wi-Fi. All this rests on the shoulders of the 2300 mAh lithium-ion battery.
The implementation of work with two SIM-cards in a smartphone is as follows: in the dialer there are two buttons for calling the highlighted number from the first SIM card and from the second. In the call log, each number or contact is displayed with a small icon-number, it shows which SIM card the call was made to. In the settings, you can add names for both slots for SIM cards. The ringtone is configured for each of the two SIM-cards, but the sound for notifications (including SMS) is only general. In general, all the basic settings for convenient work with two SIM-cards in a smartphone are implemented.
A budget device running on the domestic firmware Android 4.3, Jelly Bean. Yandex.Kit, boasts a 4-core MediaTek MT6582M processor, 1300 MHz with one gigabyte of RAM, a Mali-400 MP2 graphics core and 4 GB of internal memory, which can be expanded via microSD card (TransFlash) up to 32 GB.
The model is equipped with a 4.5-inch screen with a resolution of 960×540 pixels, made using IPS technology, and also has two cameras: an 8-megapixel rear camera with autofocus and flash, and a 2-megapixel front one. 3G smartphone supports Wi-Fi 802.11n, Bluetooth 4.0, USB and GPS interfaces, as well as a full 3.5 mm headphone jack.
Our editors, unlike HTC One dual SIM, were not pleased with the Explay Flame model, since it has a low-power 1700 mAh battery, and, instead of the declared Dual SIM Active mode, it works with one radio module in Dual SIM Standby mode, that is, both SIMs.cards (SIM microSIM) simultaneously work in standby mode, although you can only speak on one of them. In addition, if two SIM cards are connected, one SIM card works only in the 2G network, the other. in the 2G / 3G networks. There are also pluses. you can customize the call history, that is, enter data from both SIM-cards into the general list, or separately. Call melodies are assigned for each card separately.
The Russian company that produces b-brands, in December 2013, released an update to the Wexler ZEN 5 smartphone with the declared support for two active SIM-cards. Wexler ZEN 5.
The filling of the model turned out to be promising: 4-core “overclocked” processor MediaTek MT6589T with a clock frequency of 1500 MHz and 2 GB of RAM; graphics core PowerVR SGX544; 32GB of internal storage, 13MP rear and 2MP front cameras, and a 5-inch IPS screen with a resolution of 1080 × 1920 pixels. The following interfaces are responsible for data transfer: Wi-Fi, Wi-Fi Direct, Bluetooth 4.0, USB. There is GPS satellite navigation.
Everything seems to be at the level of a mid-range phone, but the 2000 mAh battery is doubtful, which is not enough for a 4-core overclocked processor, and even two active SIM-cards to boot, and after all, 10 hours of talk time and 380 hours of standby mode. The explanation is simple. the developers were lying when they talked about two active SIM-cards during the announcement. There is only one radio module, which means that SIM cards (SIM microSIM) work simultaneously in standby mode and alternately in talk mode, but they are in no way active together. Here you can also configure the history of calls from both SIM-cards and assign ringtones to each separately.
HTC Desire 600 Dual SIM (RUR 12,000)
Last year’s HTC Desire 600 proved that this device has a future, as on DO is still popular. The model is based on a 4-core Qualcomm Snapdragon 200 with a frequency of 1.2 GHz and one gigabyte of RAM.
Responsible for the picture quality are the Adreno 203 graphics processor and a 4.5-inch Super-LCD2-screen with a resolution of 960 × 540 pixels, as well as an 8-megapixel rear and 1.6-megapixel front cameras. For data storage. 8 GB of internal memory, which can be expanded using a microSD memory card up to 64 GB. For data transfer: Wi-Fi, Bluetooth 4.0, USB, NFC, and there is also GPS / GLONASS satellite navigation.
The battery is removable lithium-polymer, with a capacity of 1860 mAh, which is most frustrating, since the ability to use two active SIM-cards is implemented perfectly both in software and hardware. Honest work in active mode is supported, since the model has two full-fledged radio modules, but they also actively drain the battery. The interface allows you to conveniently switch between SIM cards and select a priority one, as well as assign a name to each card.
Zopo ZP980 16 GB (RUR 9,300)
The Zopo ZP980 16 GB smartphone appeared on the market without loud announcements, quite calmly and almost imperceptibly. The display of the Chinese smartphone has a diagonal of 5 inches (resolution 1080 × 1920 pixels), an IPS matrix and a very narrow frame around the screen. only 2.47 mm.
The performance of the Zopo ZP980 16 GB is provided by a 4-core MT6589 processor with a frequency of 1200 Hz. At the same time, the RAM is only 1 GB, and the built-in memory is 16 GB, which, however, can be expanded up to 64 GB using a microSD card. The device has two cameras in its device: 5-megapixel front and 13-megapixel rear. From interfaces: Wi-Fi, Bluetooth 4.0, USB, NFC, as well as satellite navigation GPS / GLONASS.
The battery does not shine with a large capacity. it is 1860 mAh. Despite the fact that there are two radio modules, two microSIM cards can only work alternately, but both are active in the 3G network and can access the Internet.
So, out of the five models presented, only two fully implemented support for simultaneously working two SIM cards. HTC One dual SIM, which has a decent price and a long battery life, and HTC Desire 600 Dual SIM, which has half the democratic price and a weaker battery. In the case of Explay Flame and Wexler ZEN 5, support for two active SIM cards turned out to be only a marketing ploy, since, in fact, we have a standard Dual SIM Stand-By. Zopo ZP980 16 GB went its own way and decided to make both SIM cards available for 3G, but without the ability to work at the same time.
The conclusion is obvious. When buying a smartphone, do not pay attention not to what the advertising banner says, but to what is written in the device passport or on the box. Dual SIM Active mode allows you to always stay connected: both SIM cards remain working even with an active incoming call to either of them. This is their main advantage. If during a call you receive a call to the second number, the call from the first subscriber can be put into standby mode and calmly answer the second call. This is possible due to the use of two radio modules at once.
In Dual SIM Stand-By and Dual SIM phones, there is only one radio module. That is, in the first case, you can use one SIM-card for the Internet, the second for conversation, while the secondary one will be unavailable or always busy. In the second case, you will have to switch between SIM-cards on your own, and not automatically. Sometimes you even need to restart your phone to do this. The latter case is extremely rare at the moment, but it is worth considering this fact when choosing a smartphone.
Phones with support for multiple SIM-cards: what they are?
Phones with two SIM-cards are no surprise today. Did you know that there are phones with triple SIM support? How many cards do you think should be on the phone? Maybe four? Do not be surprised, it turns out that there are such!
The “oldest grandfather” among phones with support for two SIM cards, the mention of which was found. Benefon Twin, produced by the Finnish company Benefon back in 2000.
Regardless of the number of cards that can be inserted into the phone, they are made both in the form of monoblocks and in the form of sliders. With familiar buttons and touch screens. Previously, the production of such pipes was the prerogative of the Chinese, and now brands such as Samsung, NOKIA, LG, Philips, Highscreen, Gigabyte have brought their models to the market.
I would like to dwell on the technical details, leaving behind a scrupulous study of the benefits that multi-SIM phones bring to owners, as well as the issue of the effect of radiation on the body.
The format of the informative article asks to put things in order, for which we will consider the classification of phones with multisim support according to the main parameters.
By the number of supported SIM-cards:
Phones with support for more than four SIM cards could not be found. over, most of these phones are designed to work in the GSM network. Exceptions are phones such as Samsung S3370, Anycool GC779 and ZTE H520, which combine GSM and 3G radios.
By the number of radio modules:
with one radio module;
The first category of phones uses one radio module to ensure that all SIM cards work in standby mode. During a call, a call to another SIM card is not possible. With multiple radios, the SIM cards are connected independently of each other. They say that two modules were installed on the first DUOS from Samsung. Today one of these phones is the LG GX300. Most phones come with one radio module.
By “cleverness”, or by the presence of an operating system:
Perhaps that’s all. It makes no sense to continue the classification further and talk about other parameters that characterize any phone.
In general, on the Web start at 35. The cheapest is push-button, with a tiny screen and a minimum of functions. Further more. features, but are higher, from about 100 to 150.
The most interesting of these devices are undoubtedly smartphones. And not because the future is behind them. And because they provide a really wide range of options and settings. Many “noname” Android smartphones are made in China, most of them touchscreen phones.
Those that are simpler have small screens with low resolution (240×400 or 240×320). Those that are “abruptly” have a decent resolution. 320 × 480 and even 480 × 800. Also, caring Chinese equip their models with cameras, Wi-Fi and even TV tuners. The main problems of Chinese smartphones are rather weak processors and cameras, as well as the lack of support for some nice features like 3D acceleration and anti-aliasing.
But not by the Chinese alone Smartphones from more serious manufacturers with the same Android. Gigabyte GSmart G1345 and Highscreen Cosmo Duo. are on the market, which are not inferior to Eastern competitors. At the same time, they differ for the better in the computing power of the processor and the camera. And also quality and reliability. But disputes about cheap “Chinese” and inexpensive branded phones are another story.
Phones with multiple SIM cards are needed to pay less and talk more. In fact, each of us is interested in this. I am not at all campaigning to buy a multi-SIM phone, although thoughts about a second card come to mind more and more often. It is the convenience and certain savings when using the services of different operators that makes multi-SIM phones and smartphones an increasingly familiar element of our daily life.