What is wireless charging and how it works?


Wireless charging is one of the biggest and most exciting themes in the world, ever since Mobile World Congress in Barcelona. We can use this technology for all types of electronic devices, appliances, public spaces and vehicles. Some smartphones and their accessories already have wireless charging built in. Many manufacturing companies, such as Samsung, LG, Apple, Motorola and Nokia are trying to implement this technology, as well.

What is wireless charging and how does it work?

This is a very reliable and safe way to charge any of your electrical devices. There are no connectors and cables, which makes charging more efficient, reducing cost and increasing safety. Simply put, it is a wireless transfer of power.


Wireless charging uses electromagnetic fields to transfer power from transmitting source to your device. The primary purpose is charging or recharging a battery. This new technology is based on a magnetic resonance principle or Inductive Power Transfer (IPT). There are five steps of charging process:

1. Converting – in the first step, mains voltage is converting into high frequency alternating current (AC),
2. Sending AC and inducing – transmitter circuit is sending AC to the transmitter coil. After that, AC induces a magnetic field in the transmitter coil,
3. Extending – AC, which has produced a magnetic field, is extending it to the receiver coil,
4. Generating – the magnetic field is now generating AC, within the receiver coil of the device,
5. Converting into DC – receiver circuit is converting current, which flows in the receiver coil, into direct current (DC), which can be used to charge the battery.

The whole technology is based on Inductive Power Transfer (IPT). To achieve coupling of the transmitter and recover coil, IPT uses resonance. There is only one condition that makes IPT work – the transmitter and recover coil must both resonate at the same frequency. This frequency is the one that makes object naturally vibrate. As an example, it is very common to use one tuning for causing another to vibrate, when they are both tuned to the same pitch.

Speaking as a consumer, how does it actually work?

Every customer needs two devices – device with wireless charging compatibility and a compatible wireless charger. The usage is very simple, by plugging the charger into the wall outlet and placing your device on top of it, you have started charging the battery. An indicator light should let you now if the charging had begun.

To be sure your device is compatible, check if it is Qi compatible. There must be a Qi logo (Q-shaped magnifying glass, focusing on the letter ‘i’) on the device or the packing. This type of charging pads works with smartphones, smartwatches, cameras, tablets and Bluetooth headsets.

Advantages and disadvantages of wireless charging

Just like any innovational technology, there are some pros and cons of using it. Advantages include:

Safer and protected connections – by using wireless charging, there is no corrosion when the electronic devices are enclosed, or away from the water. There is also less risk of electrical faults.
Use on medical devices – when it comes to medical devices and magnetic field, which passes through the skin, this technology is lowering the risk of infection. There are no wires which are penetrating the skin.
No wearing – considering the fact that there is no process of plugging and unplugging devices, wearing and tearing of the devices are almost entirely gone.
Aesthetics – lack of cables is the thing that maintains aesthetics quality.


However, there are some disadvantages:

Time – this way of charging usually takes slower than via cable.
The more costs –  wireless charging requires drive electronics and coils in the device and charger, which increases manufacturing costs.
No standards – because of the lack of inductive charging, different devices need different charges. There are various wireless chargers.

Smartphones which support wireless charging

Many companies have implemented this technology into their smartphones. Here is the list of 9 biggest manufacturers that use wireless charging:

Apple – iPhone 5, iPhone 5S, iPhone 5C, iPhone 5th Gen, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone 6th Gen and iPhone SE;
Samsung – Samsung Galaxy S2, Samsung Galaxy Note 3, Samsung Galaxy Note 4, Samsung Galaxy Note 5, Samsung Galaxy S4, Samsung Galaxy S5, Samsung Galaxy S6, Samsung Galaxy S6 Active, Samsung Galaxy S6 Edge, Samsung Galaxy S6 edge+, Samsung Galaxy S7 and Samsung Galaxy S7 Edge, Samsung Galaxy W2016;
Google – Google Nexus 4, Google Nexus 5, Google Nexus 6 and Google Nexus 7;
LG – LG Lucid 1, LG Lucid 2, LG L2, LG G3 and LG G4;
Motorola – Motorola Droid Maxx, Motorola Droid Mini, Motorola Droid Turbo and Motorola Droid Turbo 2;
Microsoft – Microsoft Lumia 920, Microsoft Lumia 928, Microsoft Lumia 930, Microsoft Lumia Icon, Microsoft Lumia 950, Microsoft Lumia 950XL, Microsoft and Lumia 1520;
Nokia – Nokia Lumia 735, Nokia Lumia 830, Nokia Lumia 920, Nokia Lumia 928, Nokia Lumia 929, Nokia Lumia 930, Nokia Lumia 950, Nokia Lumia 950XL, and Nokia Lumia 1520;
Sony – Sony Experia Z3V and Sony Experia Z4V;
BlackBerry – Blackberry Priv, BlackBerry Z30;


Is wireless charging just a fling or technology of the future?

Considering the way technology is built, many benefits over traditional cable connectors and widespread use (any industry or device), we can positively say that wireless charging is not just a one-time thing. However, it still needs some love. Further development of wireless charging pads and work on the charging speed will certainly be on the top news in the years to come.


Images from: Digital Trends, Mental Floss, AndroidAuthority.

10 Android N features that we can’t wait to see!


New Android 7.0 – Android N, from Google, is set to be released later this fall, most likely September or October. Even though it is not out yet, Android N is already bringing up the controversy. For starters, Google had previewed this version of Android OS month and a half before the annual Google I/O developer conference (where it has usually been announced) which took place in May this year. Secondly, what is Android N? You name it!


Messaging apps, by Google


A few days ago Google I/O conference took place in Googleplex, in Mountain View, California. Among many interesting things that happened there, such as the announcement of new Android N (Nutella is our favorite), Daydream VR, and others exciting news from Google, our attention was caught up by two new messaging apps. Yes, you read it well – Google decided to release two new messaging apps.

In total, Google now has four messaging apps produced and maintained by their teams. To help you count them all, and figure out which of them you want to use, we will make a quick tour to each of them.


Sony Xperia Smartphone Family


Sony Xperia smartphones are one of the most popular devices on the market. Sony has quite an aggressive release policy, and that is the main reason why we can enjoy in a few new Sony Xperia smartphones twice a year, since 2010.

Today, we will tell you a story about Sony Xperia smartphones and make a short overview of the most successful devices from this phone family.



The latest trend in the smartphone world is mobile payments, and we had a chance to finally see how this system works in 2015. The biggest players in the mobile payments market are the same ones who are leading the smartphone industry: Apple, Samsung and Google. Apple introduced Apple Pay in late 2014, but it started to gain attention in the middle of 2015. By the end of the year, two other companies arrived at the mobile payments arena – Google, by renaming and overhauling Google Wallet to Android Pay; and afterwards, Samsung, by launching its Samsung Pay service.


What is going on in Nokia smartphones?


As you probably know, three years ago, Microsft has bought Nokia smartphones division for approximately 7 billion dollars. We have seen a few Nokia smartphones since that moment under the Lumia branding and they were not anywhere near success and fame that Nokia mobile phones used to have in the 2000s. Is Nokia ready to deliver some new smartphones to do the world in 2016? Let’s find out.


Three New Flavours of HTC Desire

  • Posted on 19/03/2016
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  • Categories: HTC
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Rumors, once again, have been accurate – HTC does have a new mobile device to release. In fact, it’s not just one, but three of them. These are brand new HTC Desire handsets. HTC brings high-end features to mid-range phones with HTC Desire 530, HTC Desire 630 and HTC Desire 825. The higher we go with the number, the better specifications we will get, so let’s see what’s HTC prepared for us this time.


Modular Smartphone: Just the Thing that You Need


Have you ever been in a situation when you wanted to have a modular smartphone? One looks exactly as you want to, but it doesn’t have the camera you need; the other has the camera, but it misses RAM and has a bad processor; and so on. Anyway, if you have ever been in this place you have probably wanted to have a smartphone that you could tailor to your needs.


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