About usb
Can i tell you my iphone can support usb 3.2A or not
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it is just cable. rated at 3.2A max.
The actual current will be controlled by the iphone if the USB adapter is properly rated voltage and current.
I only use proper Apple cables for my expensive iphones as they have the proper chip in the lightening end .
I have used a cheap one on my old ipad mini 1 just for charging but that old ipad is obsolete and worthless