The working principle of wireless charging is the transfer of electrical current through the electromagnetic field. The charger is plugged in. On a special platform it creates a powerful enough electromagnetic field. When you put your smartphone on this platform, charging begins.
Wireless charging does not necessarily look like ugly plastic "shoes". Today you can find in the store, wireless charging, made in the form of hours and even columns.
The advantages of wireless charging in the smartphone:
1. You must not insert the power cord, namely the MicroUSB goes down first in many smartphones.
2. In places where there is wireless charging, you can put your smartphone on the charger without thinking about the format of the power cable.
3. Installing a special wireless charging in automotive design, you can conveniently place your smartphone, and keep it charging at the same time. This is especially important for those who use a smartphone for navigation.
Cons wireless charging come from the youth of the technology.
1. Not everywhere has wireless charging smartphones. Ask for a MicroUSB cable, you can have many. He became a kind of standard charges. However, in the modern smartphone with wireless charging until there is this connector.
2. The speed of charging wirelessly is slower than via cable.
3. Smartphone while wireless charging should be strictly located in the charging zone. And with the wire, it may lie at any point on the table. Everything is limited only by the length of the cable.
4. Wired charging is more practical if you charge the smartphone from the laptop, for example. You don't need charging, you need only cable USB-MicroUSB. By the way, some battery chargers for laptop even have a USB socket for this.