This detailed close-up examination of the authentic Patek Philippe Nautilus 5711 next to the knock-off makes it obvious which one costs $100,000 and which one costs just $1,000, ...

Knock-off manufacturers have also innovated at times. Novel features that have appeared in shanzhai handsets include dual-SIM card slots, extra-loud speakers and built-in cigarette lighters, ...

But despite their resemblance, the knock-off phones sometimes lack functions found in the original handsets and can come with malware pre-installed or have safety hazards like exploding batteries.