Apple has reduced its orders for iPhone 5 components, according to Nikkei sources, suggesting that demand for the smartphone has been weaker than expected.

Apple has cut orders for LCD screens and other parts for the first quarter of the year by around half, according to the sources. The initial order for screens for the period was 65 million units. The affected manufacturers are Japan Display, Sharp and LG Display.

The drop in component orders suggests sales of the latest iPhone — unveiled in September — have not been as strong as Apple anticipated and could also be waning.

Android device makers Samsung, Huawei and ZTE have been putting more pressure on Apple in recent months. Samsung recently overtook Apple as the world’s biggest smartphone company in terms of shipments.

Global sales for Samsung’s Galaxy S smartphones have now topped 100 million, the South Korean company said today. The first Galaxy S was launched in May 2010 and the latest Galaxy S3 has sold more than 40 million units since its launch in May 2012.