Apple shifts to in-house modem technology with the C1

Apple has made a significant leap in its smartphone technology by introducing the C1 chipset in the newly launched iPhone 16e. This marks the first time Apple has incorporated its own modem silicon into a phone, moving away from its reliance on Qualcomm and taking more control over the semiconductor supply chain. This move is a result of Apple's history with modem chip suppliers, including a licensing agreement with Qualcomm in 2019 and the acquisition of Intel's smartphone modem business.

The C1 chipset in the iPhone 16e is a groundbreaking development, being the first modem designed by Apple and touted as the most power-efficient modem ever on an iPhone. Built on a 4nm process technology for the baseband and a 7nm technology for the 5G FR1 transceiver, the C1 chipset does not support mmWave 5G FR2. The phone is available for pre-order in the US and UK, with shipping set to begin next week.

One of the key features of the C1 chipset is its integration with the A18 processor and advanced power management in the iOS 18 operating system. This combination results in a significant improvement in battery life, with the 3279 mAh battery in the iPhone 16e lasting up to 30% longer than the iPhone 11. The move to a lower power OLED screen also contributes to the improved battery performance, allowing for up to 27 hours of video playback.

In addition to its enhanced performance, the C1 modem in the iPhone 16e supports direct satellite links for communication in areas without cellular or Wi-Fi coverage. Users can send Messages, use Emergency SOS, and access Roadside Assistance via satellite, thanks to Apple's partnerships with satellite operators GlobalStar and StarLink. This feature provides users with a reliable communication option in emergency situations.

Furthermore, the iPhone 16e introduces sustainable practices in its design and manufacturing. The phone includes 30% recycled content, with 100% recycled cobalt and 95% recycled lithium in the battery, and 85% recycled aluminium in the enclosure. The design of the main logic board and back glass is optimized for efficient manufacturing, reducing the need for raw materials. Apple is also committed to reducing plastic waste by transitioning to entirely fibre-based packaging by the end of 2025.