Nokia is a mobile phone brand that people usually like. Nokia mobile phones have won extensive praise from the user group for their quality. However, currently, sales of Nokia mobile phones in the market are worrying, and genuine and counterfeit products are mixed together. Grey-market products and authorized-for-sale products are also mixed together. Users who just bought a phone may be unfamiliar with the difference between grey-market products and authorized-for-sale products. Here's a brief introduction to the differences between the two. Taobao Mall recommends that you buy authorized-for-sale products to protect your rights.