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Apple faces supply challenge for 'iPhone 12' antenna tech

Apple is expected to increase reliance on liquid crystal polymer (LCP) flexible printed circuit (FPC) antenna technology with its next-generation iPhone, due out in 2020, but a dearth of suppliers poses a risk to production, according to TF Securities Analyst Ming-Chi Kuo.

iPhone 11 Pro

iPhone 11 Pro


In a note to investors this week, Kuo predicts iPhone's mass appeal will grow demand for Apple's LCP FPC parts significantly to 220 million units in 2020, up 110% from current orders.

Some 70 to 75% of next year's iPhone 12 models will incorporate LCP FPC hardware, up from 45 to 50% in 2019. Apple's anticipated shift to 5G mmWave technology is in part driving high adoption rates, with 5G-enabled iPhones accounting for 15 to 20% of total shipments in the second half of 2020, Kuo says.

According to the analyst, 5G models require three LCP FPC units compared to one for common 4G versions.

In addition to a 5G iPhone, iPhone 11's successor is expected to adopt LCP FPC for its upper antenna. Current iPhone 11 models rely on modified polyamide (MPI) FPC tech. Filling out Kuo's calculations, the iPhone 7, which did not rely on LCP FPC, was discontinued in September, while shipments of iPhone XR — also not equipped with LCP FPC — will decrease in 2020 as the handset is phased out.

Demand will further increase with iPad and Apple Watch also set to more widely incorporate flexible LCP designs next year.

Murata is Apple's sole supplier of advanced antenna parts for iPhone 11 Pro, according to Kuo, and the company might not be capable of handling the massive jump in order volume.

"The greatest challenge for Apple's FPC procurement strategy in 2020 is to find new LPC FPC suppliers who can offer massive stable shipments, besides Murata," Kuo writes.

Among Apple's new LCP FPC suppliers, Avary/ZDT represents the best chance at lowering supply risk thanks to its lead in development, the analyst says. The firm is already shipping Apple Watch LCP FPC parts and its production lines have been qualified by Apple.

Existing Apple supplier Career is also in the running, but Kuo believes the firm has been tapped to provide LCP FPC modules for "iPhone SE 2," not high-volume models.

"Currently, only Avary/ZDT could simultaneously adopt Panasonic and Azotek's LCP materials for the LCP FPC production among new LCP suppliers who are being qualified by Apple," Kuo writes. "We think that this will lower the procurement risk and cost."

LCP offers a number of operational advantages to legacy materials including superior frequency attenuation, thermal performance and moisture resistance. The substrate was first used in the production of iPhone's LTE antenna modules in 2017 with iPhone X and iPhone 8, and has since proliferated to other major product lines.