Send repair to send back, almost seven days to half a month range.
The iPhone warranty is divided into steps, the first level is the store detection, most of the man-made damage is OUT, the second level is the return to the factory before the test, the Apple detection center in the Shanghai Free Trade Zone, tens of millions of equipment composed of assembly line detection, the iPhone is first connected to the assembly line, and then detect the iPhone failure, every day to deal with the tens of thousands of units, an iPhone detection time of about a few minutes, the screen function of the detection is about tens of seconds. The detection time of the iPhone is about a few minutes, the screen function of the test is about a few dozen seconds, such a large amount of simply impossible to test manually.
So whether you can detect the fault in the critical minutes will determine the fate of the phone, of course, the after-sales return to the factory test there are parts of the anti-counterfeiting identification, man-made damage identification, third-party dismantling of the identification of the phone, the fire-eye crystal.
The episodic failure has always been the most difficult problem for users to solve after the sale, this is not an exclusive problem of apple products, is the cell phone industry will exist, the focus of the difficulty lies in the diagnosis of the fault, the user expression is just the side, because the individual does not have the expertise, and more is mixed with emotions, after-sales stores often do not have such a long-term diagnosis of the time, there is no failure to appear, it is not as a malfunction.
Just like you have no problem in the hospital, go home with a headache, always back and forth hospital run did not solve the problem.