Singles Day shopping festival, data from Counterpoint Research showed, lagging domestic rivals Huawei and Xiaomi which recorded robust increases.
The number of Apple smartphones sold declined 4% year-on-year during the two-week sales from October 30 to November 12, the research consultancy said on Thursday. In comparison, the number of units sold by Huawei and Xiaomi grew 66% and 28%, respectively year-on-year over the same period.
The increases for Huawei and Xiaomi helped fuel a 5% year-on-year rise in the overall number of Chinese smartphones sold during the promotion period, it said.
The price for Apple's latest iPhone 15 model starts at 5,999 yuan ($832), while Huawei's Mate 60 smartphones start from 5,499 yuan ($763). Xiaomi's latest Mi 14 smartphone is priced from 3,999 yuan ($555).
Huawei, Apple and Xiaomi did not immediately respond to requests for comment.
China's ecommerce platforms such as Alibaba and JD.com did not release sales figures for the Singles Day festival, having dropped the practice last year, although JD.com said the value of transaction volume of Apple products surpassed 10 billion yuan ($1.39 billion) on its platform during the period.
Analysts have said the Chinese smartphone market is poised to rebound, with research firm IDC saying it expects sales to grow year-on-year in the fourth quarter after ten consecutive quarters of falling shipments.
Competition between smartphone models ratcheted up before the annual