Sales of foreign phone brands in China plunged in November, according to official data released Friday, underscoring further pressure on Apple, the biggest international handset vendor in the country.

In November, foreign mobile phone shipments in China stood at 3.04 million units, according to CNBC calculations based on data from the China Academy of Information and Communications Technology (CAICT).

That’s a fall of 47.4% from November 2023, and a 51% drop from October last year.

CAICT does not break down figures for individual brands, however Apple accounts for the majority of foreign mobile phone shipments in China with competitors like Samsung forming only a tiny part of the market.