Foxconn, a major Apple assembler, plans to invest $1.5 billion in its India unit to expand iPhone manufacturing outside of China.The investment aims to mitigate supply chain concerns and higher iPhone prices due to U.S. President Donald Trump's tariffs on China.Apple is using India as an alternative manufacturing base, reducing the risk associated with centralized production in China.Foxconn's India unit in Tamil Nadu manufactures electronic components and assembles Apple's iPhones.