can iphone be wi-fi charged?

Do you mean charge the battery from across the room without plugging it in? No.

terence from bexhill-on-sea wrote:

NO, there are wi-fo base units that you place the phone to charge the internal battery via wi-fi

No, the iPhone battery is not designed to be charged other than through the charging cable.

No Apple device is capable of inductive charging by itself.

terence from bexhill-on-sea wrote:

NO, there are wi-fo base units that you place the phone to charge the internal battery via wi-fi

Those devices do not change phones over WiFi. They use regular electricity through a process called inductive charging.

https://en.wikipedia.org/wiki/Inductive_charging