Mobile handset business is brutal. Another casualty – Taiwan’s BenQ said it plans to shut down Siemens‘ German mobile phone business, which it now owns. The company also said it would stop investing in BenQ Mobile. Looks like the “The Law of Three” is applying in this segment. Nokia, Motorola, and Samsung might end-up being dominant global forces with LG and Sony Ericsson rounding up the next two spots.