iPhone 17 Air's C1 Modem Faces Speed Issues on Certain Carriers

Apple's new C1 modem, used in the upcoming iPhone 17 Air, shows mixed performance compared to Qualcomm's chips, with advantages in poor coverage and reliability but slower speeds on some carriers like T-Mobile due to support for fewer carrier aggregations. The latest Ookla study highlights that network conditions significantly impact performance, and the C1 may be optimized for reliability over speed.