It depends on whether the phone supports wireless charging.
There are three types of wireless charging supported by mobile phones:
(1) The built-in wireless charging receiver of the mobile phone: it can be charged directly on the wireless charger, 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 frame to achieve wireless charging, such as Apple's iPhone5\/5s\/6\/6s.
At present, due to the high cost of the first kind of mobile phone manufacturers, most of them are not willing to invest. Therefore, the third way: adding a wireless charging back clip is currently more widely available on the market: such as IKEA's recently launched mobile phone case series.