First, Apple has its own strict quality test, and does not ignore the user experience test.
Second, the Ministry of Industry and Information Technology will pass the network access test in principle, iPhone? It's not a quality problem that you can't get the network card.
Third, the operator's customization test is strict, and there is a special customer service, but not much is known.
Fourthly, Apple established a three-level after-sales service system in China, trying to provide comprehensive and professional after-sales service.