Apple is set to introduce its in-house modem chip by 2025, aiming to reduce its reliance on Qualcomm, which has supplied modems for over a decade. Despite significant investments and efforts, Apple's modem development has faced delays due to performance and overheating issues, pushing the launch back until at least next year, meaning the upcoming iPhone 16 series will still use Qualcomm modems. Analysts predict a gradual rollout for Apple's new technology, starting with niche iPhone models, which may take years to show substantial benefits. Apple's transition is expected to save costs, although it may still incur some royalties to Qualcomm. The company plans to eventually integrate its modem with other wireless technologies, potentially improving reliability and battery life. This strategic shift has raised concerns about Qualcomm's market position, prompting stock downgrades amid speculation about Apple's future innovations.