Wireless charging function. Wireless charging: how it works, review of models for Samsung and iPhone

Every family is familiar with the situation when all sockets are occupied by wired chargers for smartphones and other mobile gadgets. Qi technology - simple and effective solution this problem. Wireless charging will allow you to freely use your phone and work without restrictions while traveling. That is why smartphone manufacturers are actively implementing the technology when developing new models. Latest iPhone versions have the Qi standard - energy transfer using magnetic induction.

Price and where to buy

In Russian online stores that sell smartphones and related products for mobile phones, can be purchased at favorable price Qi wireless charging with delivery. A wide range of such devices are offered by companies such as Samsung, Baseus, HOCO, WIWU. The cost of charging panels varies over a wide range depending on the parameters:

• manufacturing technologies (they can be made, for example, in the form of a rug or stand);
• functionality (there are models that allow you to charge 2 gadgets at once and are equipped with “smart” LEDs with the ability to turn off the display);
• method of fixing the phone (experienced users recommend choosing models with a rubber ring that prevents the equipment from slipping and accidentally falling);
• the number of induction coils (this fact does not affect the charging speed, but the panel is more convenient to use, since you will not need to look for the place where the coil is located in order to place a smartphone on it).

What is the price wireless charger:

• Moscow – 2990 rub.
• St. Petersburg – 2990 rub.
• Ekaterinburg – 2990 rub.
• Omsk – 2990 rub.
• Ukraine, Kyiv – 1399 UAH.
• Dnepropetrovsk – 1399 UAH.
• Gomel – 99 BYR.
• Almaty – 17990 tenge.

How does wireless charging work?

To use technology wireless transmission energy, special induction electromagnetic coils are needed both in the phone and in the charger. In the first case, it acts as a receiver, in the second – as a transmitter of electricity. When the charging panel is connected to the mains, a voltage will appear in the coil, and a magnetic field will appear throughout its entire range of action.

When the phone is placed in this field, the smartphone receiver, using the principle of induction, converts electromagnetic waves into electricity. In accordance with the WPC standard, this law works when the distance between the phone and the panel does not exceed 4–5 cm. Thus, the gadget will charge at an efficiency of 75–80%. This is somewhat less compared to wired versions, but the transmission technology allows you to replenish the expended battery energy faster.

How to make a wireless charger with your own hands?

In practice, knowledge of physics, electronics and electrical engineering allows you to make a wireless one yourself. Most often, a blocking oscillator circuit is used to solve this problem. It is better to use it for several reasons:

• it is simple;
• does not require additional configuration;
• works with high efficiency;
• Uses a wide range of voltages.

The transmission circuit consists of a coil feedback, loop circuit and indication circuits. To etch them, it is recommended to use 2-sided foil fiberglass laminate with a thickness of 1.5 mm. But there is a simpler manufacturing method: the role of an inductive charging transmitter can be played by copper wire with a diameter of 0.5 mm (40 turns wound on a frame with a diameter of 7–10 cm), a transistor is connected to the end (the value in this case does not matter). You can use a CD box as a case. The transmitter is ready!

If a direct conduction device is used, the polarity must be changed when connecting.

The Qi standard receiver has a flat appearance. Copper wire 0.3–0.4 mm is used for the coil. It is wound on a plastic base with 25 turns (they can be fixed with superglue). For connection, it is better to use a silicon high-frequency diode, which is attached to the battery. To stabilize the voltage, a capacitor is used.

To charge smartphones you will need a connector that can be connected to the receiver and directly to the battery. But keep in mind that the sensor indicating the battery charge level will not work. After completing the procedure, just close the lid. The device will start working if you place it on top of the transmitter.

Which phones support wireless charging?

Selected models smartphones are available with built-in Qi function. The ability to use the technology is available Samsung owners(Galaxy S6 Edge, Galaxy Note Edge, Galaxy Note 4), as well as Motorola Droid Turbo, Google Nexus 6 and others. For models that do not initially support this standard, a special receiver will be required to replace the phone body or its back cover. When choosing components, it is important to consider their compatibility with specific model gadget.

Additional products:

We charge a smartphone wirelessly: how wireless ones work charging device

One of the functions of top smartphones recent years- possibility of charging without wires. It is enough to place the device on a special contact pad (dock station) to restore the battery's energy supply. The charging process ends automatically when the charge level reaches 100%.

How Qi wireless charging works: energy flow through the air

Power standard for wireless charging mobile devices called Qi. The name reads "Qi" because the standard was named after the energy Qi - a key concept in Eastern philosophy, denoting life energy. Qi technology was developed by the Wireless Power Consortium (WPC) almost ten years ago - in 2009.

Qi wireless charging supported flagship smartphones many manufacturers: Apple, Asus, HTC, Motorola, Nokia, Samsung. As a rule, all compatible chargers are marked with the official standard marking.

Official Qi logo

Qi technology allows electromagnetic signals to be transmitted to short distance(up to 4 cm). Externally, the charging process is quite simple: the charger is connected to a power source (for example, to a power outlet or USB port of a computer), the smartphone is placed on a special contact pad of the device, and the gadget’s battery begins to charge. For this purpose, there is a special transmitter in the charger, and a receiver in the smartphone.

Apple's AirPower charging can power three devices simultaneously

With Qi-enabled wireless charging, you can charge not only smartphones, but also tablets, smart watch and other mobile devices with a Qi receiver. Some chargers have the ability to power several gadgets at the same time, depending on the number of contact pads on the device. At the current stage of technology development, there are usually two of them, although Apple last year introduced AirPower charging with three pads.

Benefits of wireless charging

The bonuses that wireless charging provides are obvious. Firstly, like any wireless device, it allows you to remove from your home a couple of extra cables that were occupying sockets or PC connectors. However, there will still be a wire that connects the wireless charger to the network, but it is usually easy to hide. There are also portable power banks with Qi technology.

Secondly, smartphones with wireless charging usually support wired charging, so you will have two options for charging your gadget. If it is possible to charge the device over the air, that’s good; if not, you can always use a regular cable. In addition, wireless chargers often have additional USB or Lightning connectors for power third party devices. You can place your smartphone on the contact pad, and connect another smartphone or, for example, a Bluetooth headset to USB.

The Nillkin Hermit charger can also be used as an external USB hub

Thirdly, using a wireless charger extends the life of your smartphone's power connector. After all, it is now used only to connect to a PC, which happens much less often than charging. Therefore, the connector becomes looser and damaged more slowly, depriving the device of power and communication with the computer.

Ferrari wireless power bank - for true car enthusiasts

Finally, a wireless charger gives a lot of room for designers' imagination. It can be given an unusual shape or color, encased in a body made of original material (metal, wood), equipped with built-in lighting, and the logo of a popular brand can be applied. Therefore, it is not surprising that many wireless chargers look more like a decorative element.

Disadvantages of wireless memory: the first alarm bells

Wireless chargers have recently entered the market and their impact on batteries cell phones has not yet been sufficiently studied. Therefore, some users already began to worry in advance.

Thus, ZDNet resource columnist Adrian Kingsley-Hughes noticed that an iPhone charged using Qi technology discharges faster. This leads to an increase in the number of recharge cycles and, as a result, can cause premature wear of the device's battery. However, the data from this experiment is not enough to speak with complete confidence about the dangers of wireless chargers.

Apple iPhone 8 and 8 Plus are the first Apple smartphones with wireless charging

Other disadvantages are also related to the newness of the technology. Qi standard chargers are not yet perfect enough - for example, for charging to work, the smartphone must lie on the platform in a strictly defined position. In addition, Qi technology is currently only available in premium devices.

Mophie battery cases add Qi support to iPhone

However, since the Qi standard is open, enterprising manufacturers have long started producing adapters that allow you to add wireless charging functions to absolutely any phone. These include battery cases with built-in Qi-to-microUSB adapters and separate adapter modules that can be glued into any case.

What types of wireless chargers are there?

Qi-based chargers available in this moment on the market differ from each other in terms of application. They can be portable or built into furniture, and are available for the home, office or car. “Home” wireless chargers work from a wall outlet or from a PC. This is the most common type of charger that looks optimal in the interior.

Wireless charging Nillkin Phantom is also an original lamp

Car wireless chargers work from the cigarette lighter in the car. They have convenient mounts for placing charging in the car interior - for example, on windshield or ventilation grille.

Mophie car charger is attached to the grille, and the smartphone is attached to it using a magnet

Portable wireless chargers are usually combined with an external charger (power bank). This allows you to carry them with you while walking or traveling and recharge your smartphone on the go, even if there are no outlets nearby.

The capacious 8,000 mAh Harper wireless power bank is protected from shock.

Finally, the most futuristic type is built-in wireless chargers. They connect to a hidden outlet or directly to electrical wiring and are built directly into furniture: tables, bedside tables, bar counters. Starbucks coffee shops successfully use such devices, offering Powermat charging mats to visitors.

Charging mats Powermat

The future of wireless charging technology is very promising. This could also be integration into the composition smart home, and mobile device charging points in in public places- in cafes, subways, airports. So far, only flagship smartphones support Qi technology, but it would not be surprising if over time wireless charging becomes available to devices from the middle and budget segment.

How to add wireless charging support to your smartphone?

In fact, absolutely any smartphone can be equipped with Qi technology, even if it was not initially positioned as a device with wireless charging. This convenient opportunity for those who are used to their phone and do not want to change it for the sake of new technology.

It is enough to purchase a universal Qi module with a connector that suits your smartphone: micro-USB, USB-C or Lighting. The module is glued to back cover smartphone, connects to the charging connector and hides behind the case. After this, the smartphone can be charged wirelessly - current from the charger will flow to the battery through the adapter.

The only inconvenience of this method is that the adapter will have to be constantly disconnected in order to connect the smartphone to the PC via USB. But if you rarely connect your phone to your computer, the Qi module will definitely not bother you.

Your new ones iPhone smartphones 8/8 Plus and iPhone X Apple company almost main feature devices called support for the Qi standard wireless charging function. Also introduced was the Air Power wireless charging mat, which allows you to simultaneously charge your smartphone, Apple Watch And wireless headphones AirPods. Wireless charging is slowly becoming standard function for A-brand flagships and more.

But is it so revolutionary? Apple solution? How does wireless charging work in practice? This will be discussed in the article.

How wireless charging works

Most wireless chargers use magnetic induction and magnetic resonance. They suggest placing the gadget on a special surface for automatic charging, without the need to connect a cable to the device.

Of course, wireless charging isn't truly wireless. Your phone, smart watch, tablet does not need to be connected to the charger, but the wireless charger itself still needs to be connected by cable to the power adapter or USB port.

How Apple's opinion on wireless charging has changed

When Apple introduced the iPhone 5 without support for wireless charging, at the same time in smartphones on competing Android platforms And Windows modules were built into many flagship models. But Apple's Phil Schiller that "creating a separate charger that you have to plug into an outlet is actually, for most situations, more complicated." That is, in Cupertino they didn’t even think about wireless charging, dismissing this possibility in the bud.

Five years later, Apple changed its mind. With iPhone 8, iPhone 8 Plus, and iPhone X, Apple includes support for wireless charging using open standard Qi (pronounced "shi" as it is a Chinese word that refers to the "vital energy" in living things.).

Qi wireless charging

Wireless chargers currently use the phenomenon of magnetic induction. Simply put, they use magnetism to transfer energy. First, you place a device, such as a smartphone, on a wireless charger. Current coming from power socket, passes through a coil in the wireless charging module, creating a magnetic field. The magnetic field creates a current in a coil inside the smartphone. This magnetic energy is converted into electrical energy, which is then used to charge the battery. Devices must have the appropriate hardware to support wireless charging. That is, a device without the necessary coil inside the case cannot be charged wirelessly.

While the Qi standard's operating range was originally limited to a small magnetic field range, it now also supports the use of magnetic resonance phenomenon. It works in a similar way, but the gadget being charged can be located up to 45 mm from the surface of the wireless charger, and not touch it, as was before. This method is less efficient than the magnetic induction method, but there are some advantages - for example, the wireless charger can be installed under the surface of the table, and you can place the gadget with the receiver on the table to charge it. It also allows you to place multiple devices on one charging pad and each of them will be charged in parallel.

A little about the system's power consumption. When gadgets are not charging, the Qi charger does not consume a large number of electricity. A special low-power module monitors this moment and turns off the current to the coil, but when it detects that a gadget that requires charging is placed on the charger pad, it increases the output power of the magnetic field.

Competitors of the Qi standard

Wireless charging is becoming more common and more thoroughly standardized. And for this times Apple didn't create my own wireless standard. Instead, it decided to support the existing Qi standard, which also supports many third-party devices.

Power Matters Alliance (PMA)

However, Qi run by the Wireless Power consortium, the most widespread at the moment, but it is not alone. In second place -Power Matters Alliance, or PMA standard. It uses magnetic induction, just like Qi. However, these two standards are incompatible. New iPhones and other Apple products cannot be charged using the PMA wireless charger.

But some devices on the market are compatible with both standards. Modern smartphones, such as Galaxy Note8, Galaxy S8 and Galaxy S7, in fact, support both Qi and PMA, so they can be charged from any charger. Starbucks company (global cafe chain)previously relied on PMA, but now there is an option that it can rethink the situation, since the iPhone only supports Qi.

Apple is confident that in the near future many airports, hotels and other public places will also rely on Qi. That is, most likely there will be devices from other manufacturers that support wireless charging of this standard. As practice shows, this will probably actually happen.

Alliance for Wireless Power (A4WP)

There is a third competitor to the Qi standard. This Alliance for Wireless Power (A4WP), which uses Rezence technology in its work. The essence of the operating principle of the standard is to use the magnetic resonance effect, which will expand the charging area for several devices. You can place multiple gadgets on one charger, move them around, and even charge them through an object such as a book. Rezence technology requires a Bluetooth connection to your device to work.

AirFuel Alliance

Realizing that the Qi standard is the most popular on the market, the competitors decided to unite. This is how a new education appeared AirFuel Alliance, which has been promoting its wireless charging technologies since 2015. The consortium included 195 companies. The most interesting thing is that the AirFuel Alliance has secured the support of Intel, which suggests that everything is serious and here to stay. Well, competition is always good for users, because it is the engine of progress.

What devices can you use wireless charging with today?

I am sure that many users ask themselves this question. After all, everyone wants to try how wireless charging actually works, and whether it is as convenient as the developers say.

I have quite a lot of experience using wireless charging. You will be surprised, but it’s been almost 5 years. My good old Nokia Lumia 820 supports wireless charging. Back in December 2012, when I purchased a smartphone, I received an additional accessory that made it possible to use wireless charging for this smartphone.

True, in order for the Nokia Lumia 820 to be charged wirelessly, it was necessary to buy a special back cover. From personal experience I can say that using wireless charging is very convenient and practical. Place your smartphone on a special surface and it will begin to receive energy to charge the battery. It is worth noting that there are also unpleasant sides to using wireless charging from Nokia. Let's start with the fact that in this case the smartphone body heats up quite noticeably, and the charging process itself is much slower than when charging via a cable.

Unfortunately, the story of Microsoft smartphones seems to be over. But you still have the opportunity to try wireless charging.

Over the past few years, Android smartphone manufacturers have been increasingly installing wireless charging in their devices. For example, Google does not offer it on its Pixel smartphone, although some Nexus devices previously supported this function. Of the A-brands, only Samsung has retained wireless charging capabilities in its latest flagship models.

But with Apple's move to give the Qi standard a vote of confidence, wireless charging may become more common, including on Android devices.

However, you can already buy a smartphone that supports wireless charging. This Samsung Galaxy Note8 and Galaxy Note 5,Galaxy S8, S8+, S8 Active, S7, S7 Edge, S7 Active,LG G6 (US and Canada version only) and LG V30,Motorola Moto Z, Moto Z Play, Moto Z2 Force, Moto Z2 Play (only with wireless module for charging), and of course the new iPhone 8, 8 Plus, X (10). As you can see, the choice is quite large, from different brands and on different platforms.

Even if your smartphone does not support wireless charging, you can add support for this function using a special case. Also in some cases it is possible to use wireless adapter charger, which is attached to the back of the gadget and connects to the power port.

And now the most important thing. In order to charge your smartphone using wireless charging, of course, you first need to purchase a charger that will support the Qi standard. You can find such devices in various online stores, such as, Aliexpress, eBay and others. After purchasing a device in a store, connect it to a power outlet and place your smartphone on a special platform. Now it will charge wirelessly, just like you wanted.

Results

Something tells me that the appearance in new iPhone features wireless charging will give impetus to the development of this segment of the IT industry. Very soon we will see a situation where all flagship smartphones will begin to support wireless charging technology by default. And then things may come to budget devices. So we're in for some interesting times.

What is wireless charging for a smartphone, how does it work and how to choose it

IN Lately everything appears on the mobile device market more smartphones with wireless charging function. In this article we will try to tell you a little about it, how it works, its pros and cons, how to use it and how to choose it. So let's get started!

Principle of operation

Let's start with the fact that this technology is based on the principle of electromagnetic induction, in which an electromagnetic field is formed around a current-carrying conductor. If another conductor is placed within the range of this field, current will also begin to flow through it. The radiation power can be adjusted using inductors, allowing the energy to be concentrated on the required area.

In our case, wireless charging technology is implemented through a special docking station (powered by USB port or a regular outlet) and receiving device– i.e. the smartphone itself. Each of them is equipped with an induction coil, which allows the Google Phone placed on the station stand to receive electromagnetic radiation station and replenish your battery charge level.

Wireless charging standards

There are two standards of wireless charging technology in the consumer market today. The first of them (the most popular) is called Qi, the second is PMA. However, some manufacturers support both standards, which gives their gadgets some versatility.

You can find out which standard a particular smartphone supports from the documentation that came with it or from the description of its characteristics published on the manufacturer’s website.

How to choose a wireless docking station

1. Power

If you decide to purchase a docking station with fast charging functionality, be sure to check the charger specifications. So, for example, with an output voltage of five volts, the current can range from several hundred milliamps to one ampere and higher. In this case, the wired charger has an output current of one to two amperes. Thus, the most suitable model would be a model with an output current of one ampere or higher. If given value If the docking station is too low, you will spend much more time charging your smartphone.

2. Number of charging circuits

It is also worth paying attention to the number of coils of the wireless charger you want. The fact is that most docking stations are equipped with only one coil, which is why they have a very limited range and require precise placement of the phone on the stand. At the same time, today on the market you can find stations with two or even three coils, thanks to which the accuracy of the gadget’s location on the platform has almost no effect on its charging speed.

3. Brand.

You should not buy completely “incomprehensible” devices. Chinese auctions today are full of a huge amount all kinds of models of wireless chargers, but you need to understand that when buying a pig in a poke, you will not receive any guarantees that the output power will correspond to the declared indicators. And this is the most important indicator.

Today there are enough brands that produce good products, and not always for a lot of money: Samsung, Nokia, Belkin, Anker, Mophie, Skyway, etc.

• Use the "correct" power supply, the power of which meets the manufacturer's recommended specifications.
• For most chargers, especially those with single coils, the position of the device matters. These can be either drawn outlines of the recommended location of the smartphone, or specific recommendations in the instructions. If the charger is made in a docking station form factor, there are often only one or two possible positions (vertical and horizontal, if there are two coils)
• Do not place anything between the smartphone and the charger. Magnetic mounts, magnetic cases, metal plates in car mount cases can all reduce the performance of the charger.
• Also, do not forget to take it out of the case. credit cards, electronic badges, and other things that have magnetic stripes or RFID radio frequency identification chips, because possible electromagnetic radiation can damage them.
• A very thick case can also reduce charging efficiency by moving the device away from the charging circuit.
• Vibrating the smartphone, for example when receiving a notification, can move the device from its original location, which can reduce efficiency
• Slight heating during charging is normal. But only a small one.

Advantages and disadvantages

What are the pros and cons of wireless charging for smartphones? Let's start with its advantages:

Pros:

• Convenience. I think no one will argue that this is much more convenient than connecting a cable. Especially if the device has to be used periodically while charging, for example, for calls.
• You won’t have to connect the cable every time, which means the smartphone’s interface connector will last much longer.
• Today, many establishments, including StarBucks and McDonalds, have equipped their customer tables with built-in Qi docking stations, which can be useful if you urgently need to charge your gadget and don’t have a charger on hand. Furniture has also already appeared (for example, in IKEA) with built-in charging panels, and automakers are increasingly installing them in premium cars.
• While at home, you can keep your device on the docking station all the time, so it will always be fully charged. In this case, the controller built into the device will automatically stop charging as soon as its level reaches 100%.
• Safe to use. Any cable begins to wear out with constant use, which can lead to damage and, as a result, a short circuit. Wireless charging has no such disadvantages.

Minuses:

• Higher cost.
• Most docking stations have a very limited range and require precise positioning of the phone on the stand.
• Less energy efficient. On average, wireless charging takes 1.5-2.5 times longer than conventional charging.

What to do if your smartphone does not have wireless charging functionality?

The lack of wireless charging technology on a smartphone does not mean that it cannot be used. Today, to solve this problem, some manufacturers offer additional accessories, capable of adding the missing function to the device.

One such method is plate receivers. This is a thin plastic card with a built-in inductor, which is connected to the smartphone via a special contact cable, after which it is placed under the cover. As a more comprehensive alternative, you can purchase a special charging case with a similar plate already built-in, which, after installation, replaces back panel gadget.

Wireless charging is a long shot new technology. We have toothbrushes that charge wirelessly and many other things that charge this way are not surprising.

Now that size, cost and efficiency restrictions have dropped to critical levels, adding wireless charging to your smartphone or smartwatch makes more and more sense.

People often ask questions about wireless charging and how it works, so let's talk about the basic principles: what it is, how it works and why you should have wireless charging in your next smartphone. Go!

What is wireless charging?

Wireless charging in smartphones is not magic, because you still need a wire to work. But the difference here is that the wire is connected to the charging base instead of your smartphone, so you can just put it on the charger and everything will work itself without connecting the wires directly to your smartphone or watch.

A wireless charging base can come in almost any shape or size. A good example can serve as wireless charging on your desktop. When you're not using your phone, you place it on the wireless charging pad. When you need it, pick it up and it's already charged.

At the moment, wireless charging is not as fast as fast wired charging (read our big post about fast chargers), but it is very easy to use. In this sense, it is beyond competition.

How does wireless charging work?

Let's try to explain this magic so that everyone can understand. Although there are many interesting technical issues for discussion, and they should be on specialized forums, we will try to explain simply and clearly.

Wireless charging uses two resonant inductive connections to transmit low power signals between two devices. They are specially designed to transmit electricity without touching each other like a normal wired connection does.

The wireless charging base station has a transmitter coil, and your phone has a receiver coil (above photo). Contact pad sends a signal regularly, and when the receiver coil is close enough, a resonance occurs in the signal. The signal is then modulated and begins inductive charger.

Inductive charging (Qi) uses these two specially designed electromagnetic coils to create a magnetic field between two devices. There is a complex process that allows magnetic field generate electricity through potential differences and vibrations.

Reel on your Android smartphone is also connected to the battery charging circuit and your battery is charged using the energy caused by the magnetic field.

Inductive charging (Qi) creates excess heat, which is why wireless charging is not the best effective method transferring power from the outlet to your battery.

This is also because it takes longer to charge your phone than when plugged into a wall outlet. At that time, new methods and materials use more high frequencies and thinner coils than previous versions, wireless charging is still less efficient and more expensive than standard wired charging. This difference will remain for the foreseeable future.

Let's summarize:

• Your Qi-enabled smartphone and charger have special electrical coils.
• When two coils come close, they use electromagnetism to send a small amount of energy across the distance between them.
• This power passes through the charging circuit in your phone and charges the battery.
• This costs more and takes longer than plugging your phone into a wall outlet because it is less efficient.

Where is wireless charging?

Companies like AT&T and Starbucks provide base stations wireless charging in public places. If you have wireless charging on your smartphone, this becomes very convenient.

Many popular cars also have built-in wireless charging bases. However, recently this trend has declined. But things could change dramatically if the future one gets support for wireless charging.

Furniture from IKEA that supports wireless charging is also widely known.

Why do I need wireless charging in my next smartphone?

It's important to understand that any Qi wireless charger will work with any device that is Qi certified. This means that the charger you buy, be it Chinese block for 100 rubles from Ali or a brand like Samsung or Zens will work with the device you have now and any devices you buy in the future.

Until you buy Qi chargers and put them in places where you're likely to put your phone, you won't really understand how convenient it is.

I have a Qi charger on my desk, on the table next to my living room chair, in my car, and on my nightstand. My Nexus 6 almost never had less than 50% charge. Not because it's time battery life on the Nexus 6 was great, either because Qi chargers work "better" but because when it wasn't in my hand it was charging.

Of course, you need to buy charging bases, but they are quite cheap. Approximately the same price as for good block power supply and USB cable. Since more and more more devices moving towards the Qi standard, more and more devices will be able to use such chargers.

In 2017, only Samsung from the A-brands does not hesitate to use wireless charging in its flagships.

Wireless charging doesn't make your smartphone work differently, but it can radically change the comfort level of use. We just have to wait until all the major players in the smartphone market finally start installing support for Qi wireless charging.