I want to do the transfer without using the internet. Yes I can access USB thumb drive. But let show me using a PC (administered by me) and an Iphone that I have access to everything. How do I make the transfer via the USB connection?
What do you mean by "internet"?
You can:
(a) Connect the phone to your wireless network, then browse to a network file share using the Files app and copy the files onto the phone from there
(b) Obtain a USB adapter for the phone, plug in a USB thumb drive, copy the files off the USB drive using the Files app
(c) If you don't have wireless, obtain an ethernet adapter for the phone, plug the phone into a network cable, then browse the network using the Files app
(d) Do what Someone has advised, use a third party app and copy the files using the USB cable
Please stop asking people to spoon feed you, and do some research on your own. You must know what the internet is, since you are presumably using it to connect to this forum.