How Does Wireless Charger Work Mobile Phones?

The secret of wireless charging is electromagnetic induction: the transmitting coil of the charging base sends out signals. This signal searches the receiving coil, such as the receiving coil of a compatible mobile phone. After induction of the receiving coil, electromagnetic induction is started. The electrons (current) in the transmitting coil start to flow around the coil.
 
This generates a magnetic field that can be induced by the electrons in the receiving coil. Due to the influence of the magnetic field, the electrons trapped in the receiving coil start to flow around the coil. The electron flow in the receiving coil is the power that powers the mobile phone battery.

 
As of now, most of the new phone models on market already have wireless charging function, the main models as below:
 
iPhone 11/11 pro/ 11pro max/ XS Max / XR / XS / X / 8 / 8 Plus, Airpods
Samsung Galaxy S10 / S9+ / S9 / S8 / S8+ / S7 edge / S7 / S6 edge+
Samsung Note 10 / Note 9 / Note 8 / Note 7
Google Pixel 3/Pixel 3XL/Pixel 4/Pixel 4XL
LG G4/5/6/7/8 / V30
Nokia Lumia 820/1020/1520/920/822/93
Motorola Droid Turbo / Droid Maxx / Droid 5
Blackberry Q20 / Z30 STA100-3 / PRIV / Evolve / Evolve X