They are shipped here over sea lanes made safe by the trillions the US and other countries pay to make them safe; to fly in airspace made safe and regulated by those same countries; to be shipped to individual stores over roads built and maintained by taxpayer dollars that allow such wide open shipping lanes; allowed to move from truck to store and stay in said store before the point of sale to me and other buyers safely by a police force also paid for by taxpayers.
They are then moved a short distance by trucks that pay for their own road costs via fuel taxes and tolls. Finally, I drive to the shop, paying my own taxes along the way to pick one up.
At no point is corporation tax paying any part in the transport of goods like iPhones.