There are three types of wireless charging supported by mobile phones:
1. Mobile phone built-in wireless charging receiver: directly on the wireless charger can be charged, such as Samsung S6, Nokia Lumia920, Google Nexus4\/5 and so on.
2. Wireless charging receiver contacts are reserved inside the mobile phone: wireless charging receiver coils need to be installed to achieve wireless charging, such as Samsung's S3\/S4\/Note2\/Note3.
3. The phone itself does not support wireless charging at all, and it is necessary to install a wireless charging receiving back rack to achieve wireless charging, such as Apple's iPhone4\/4s\/5\/5s and so on.