As the mass production of the new iPhone draws near, TrendForce, in April this year, raised concerns in the smartphone industry about several design changes made to the 2023 iPhone models almost half a year ahead of production. The industry is closely monitoring whether related components can keep up with the production schedule to ensure smooth execution of subsequent assembly plans. Recently, TrendForce provided updates on the production progress and details of these components.

According to TrendForce’s investigation, two critical components in the iPhone supply chain are causing worries about potential supply issues – the CIS (CMOS Image Sensor) and the titanium alloy frame. Currently, there are still bottlenecks in the production of these components that need to be overcome.

Regarding the CIS, the bottleneck arises from Sony’s supply of the new 48MP CIS, which is expected to be used in iPhone 15 and iPhone 15 Plus. This CIS adopts a new stacked design, separating the CIS photodiodes and peripheral transistors into three layers instead of the previous double-layer structure. This poses a significant challenge to yield rates, and despite Sony’s efforts to increase production capacity to cope with the yield ramp-up difficulties, the supply situation does not meet anticipated levels, affecting the initial production schedule of the entire device.

As for the titanium frame, due to the elimination of the pressure-sensitive button structure and the slight adjustment in the opening for the mute switch, the suppliers need to re-allocate, set up, and verify the basic operating time of the production lines.

Additionally, the processing procedures for titanium are more complicated compared to stainless steel, which leads to longer production lead times. TrendForce confirmed recently that the titanium frame for the new iPhone is currently one of the components with lower yield rates and supply stability. Therefore, suppliers have expanded production capacity by 20-30% and are working diligently to ensure that even if the initial supply is tight during the early stages of production, they can respond accordingly, ensuring that the launch and supply of the entire device will not be affected.

Given the supply constraints of these two components mentioned above, TrendForce believes that Apple may increase the production proportion of the two Pro models in 3Q23 to fill the gap caused by the initial iPhone 15’s production capacity shortage. This adjustment, in an optimistic scenario, will only involve shifting production proportions between different models in two quarters, with no impact on the annual shipment performance. TrendForce assesses that this possibility is more likely under the current circumstances.

However, if the CIS yield bottleneck is difficult to overcome, it could lead to a substantial reduction in the shipment volume of the 2023 iPhone models. TrendForce will continue to monitor the situation closely.