Taiwanese chip firm Advanced Semiconductor Engineering said on Tuesday that its biggest customer, Apple, was being more conservative in placing orders compared with last year, according to the Nikkei.
The business daily reported in May that component suppliers in Taiwan would receive fewer orders from Apple (AAPL) in the second half of 2016.
Apple usually launches its flagship iPhone in September.
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Earlier this month, Goldman Sachs lowered its price target on Apple’s stock on worries about slowing growth in the smartphone industry.
At the time, the brokerage also lowered its fiscal 2016 forecast for iPhone shipments to 211 million units from 212 million units.
Cupertino, Calif.-based Apple reported its first-ever quarterly decline in iPhone sales in April, leading to worries about demand for its next iPhone.
For more, read: Why Next Year’s iPhone Might Be the One You Want
Up to Monday’s close, Apple’s shares had fallen 12.6% this year.