Inventories of equipment: cellular handsets and fixed telephones, tablets, laptops, datacards, servers, spare parts, ISP modems, related equipment, accessories and other inventories are stated at the lower of cost or net realizable value. Cost is determined on the "first-in, first-out" basis. The Group determines its allowance for inventory obsolescence and slow moving inventory based upon past experience, expected inventory turnover, inventory ageing and current and future expectations with respect to product offerings.