Through an examination of the case of the iPhone X,this paper demonstrates that Chinese companies involved in the production of the iPhone X have moved up along the global value chain.According to the bill of materials,those companies contributed 25.4%of the value added of the iPhone X.About 45%of the value added of the iPhone X originated in Japan,South Korea,and other economies.The iPhone trade remains a significant element of the statistical distortion of the China-US bilateral trade imbalance.In terms of gross value,the import of one iPhone X results in a USD332.75 trade deficit for the US;measured in terms of the value added,however the deficit is a mere USD104.The depreciation of the Chinese yuan(CNY)has very limited power to counterbalance the tariffs imposed by the Trump administration because the foreign value added embedded in Chinese exports is 33.9%on average.Simulation results show that to counterbalance a 25%tariff,the CNY would have to depreciate by 43.3%against the US dollar on average,and to fully compensate for a 25%tariff burden on the iPhone X,a 400%depreciation of the CNY would be necessary.Hedging the risk of the punitive U.S.tariffs by depreciating the CNY is impossible.