Various reports suggest that the entire iPhone 17 lineup, including the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max, will use a heat dissipation technology called "vapor chamber (VC) cooling system". It is not quite clear, however, which of these models will use combined VC technology and graphene sheets, and which will use only one of these thermal management technologies.
As the iPhone 15 Pro is known to face overheating issues, Apple turned to using graphene sheets in the thermal system when launching the iPhone 16 Pro. To further enhance the cooling mechanism, iPhone 17 models may also adopt vapor chamber technology.
In August, reputable analyst Ming-Chi Kuo stated that the iPhone 17 Pro Max would exclusively feature “an upgraded cooling system combining vapor chamber (VC) technology and graphite sheets.” He emphasized at the time that the rest of the 2025 iPhone lineup would miss out on the vapor chamber and rely solely on graphite sheets for thermal management.
However, A new report now contradicts Kuo’s previous remarks, claiming that all iPhone 17 models will utilize vapor chamber technology for cooling.