https://tech.newstatesman.com/guest-opinion/us-china-trade-war-apple

The ongoing US-China trade war has added to the woes faced by Apple beyond competing against Samsung and insurgent Chinese makers in an increasingly competitive market.

The Apple iPhone had remained clear from initial tariffs set by the US (10 per cent on $200 billion worth of Chinese products). However, relations with China worsened following a threat from US President Trump to impose a 25 per cent tariff on an additional $325 billion worth of Chinese imports, which could impact Apple.