Graphite sheet

Graphite sheet used in mobile phone etc.

Graphite sheets are widely utilized in mobile phones as a key thermal management solution, addressing the challenge of heat accumulation from high-performance components in a compact space. These thin, flexible sheets are strategically placed between heat-generating elements like the CPU, GPU, 5G modem, and the phone's internal structure, such as the mid-frame or back cover.​
One of their primary advantages is their exceptional thermal conductivity, which allows them to efficiently spread heat over a larger area rather than letting it concentrate in a single hot spot. This helps prevent localized overheating that could degrade performance—for example, throttling of the processor during intensive tasks like gaming or 4K video recording. Additionally, graphite sheets are highly conformable, adapting to the curved or irregular surfaces inside a phone, ensuring close contact with both the heat source and the heat-dissipating parts.​

They also contribute to maintaining a comfortable user experience by transferring heat away from areas frequently touched, such as the back panel or screen. In modern smartphones with slim designs and powerful hardware, graphite sheets offer a lightweight, space-efficient alternative to bulkier cooling solutions, enabling manufacturers to balance performance and form factor without compromising on thermal efficiency. For instance, during prolonged use of features like video calls or navigation, graphite sheets work to distribute heat evenly, keeping the device operational at optimal temperatures.