1. Mobile phone manufacturers do R&D and design work, and the factory is responsible for production. This is indeed the current division of labor in the mobile phone industry. Most mobile phone manufacturers are handed over to foundry companies such as Foxconn for production.

2. The foundry has its own basic quality requirements, but the quality of a product depends on the manufacturer's own standards, because the final quality inspection is carried out by the brand. If the brand has high quality requirements, Foxconn will naturally be strict.

3. Another important factor of quality is components. Foxconn is responsible for assembly and manufacturing, but the components are all selected by the manufacturers themselves. If the manufacturers choose high-quality components, the quality will be better.

4. Foxconn's internal production lines are also different in terms of equipment and technology. Generally speaking, they will be differentiated according to the order of customers, and customers who spend more money will be given more preferential treatment.

5. Most importantly, powerful manufacturers actually have higher production level than Foxconn. For example, the Songshan Lake production base of Huawei in Dongguan can be said to be the most advanced in the world at present, but the production capacity is limited and only a small part can be produced. Therefore, Huawei's approach is that Huawei and HONOR first produced in their own factories, and after the production yield was improved, their experience was copied to a foundry like Foxconn to ensure that the product quality was equally excellent.

6. For example, some time ago, Glory 9 was produced in Dongguan Huawei production base. Because the products were excellent and the sales volume was particularly good, it sold 1 million units in 28 days. President Glory also specially went to the production base to inspect and hope to speed up the production capacity. In the video, there are pictures of production lines that were difficult to see before. It is really advanced and the test is very strict.

if you have new ideas, please discuss and exchange them together.