The screen keeps crashing for 5 seconds and now it can’t be turned on.

Insufficient battery

1

If the battery is exhausted, the system will automatically shut down and must be recharged to 5% before it can be turned on. If this is the case, you will have to wait a while before you can turn it on, even after plugging it in to charge. So don’t worry at this time, as long as it is charged to 5%, it can be turned on and used normally.

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Temporary system failure

1

Sometimes you may encounter a sudden black screen on your phone. This may happen This may happen because the compatibility between some software and the system is not good, or the user has upgraded some beta firmware. If you encounter a black screen and there is no response no matter pressing any button, we can press and hold the "Power and Home" buttons of the Apple 5s at the same time for more than 5 seconds to force a shutdown.

2

Then we press the power button to turn on the computer, and that’s it.

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Failed to jailbreak and cannot boot

1

Although the current perfect jailbreak tool for iOS7 has been released, there are still some problems in the jailbreak process. It is inevitable that you will encounter some unexpected situations, such as white apples that cannot be turned on normally. If the computer cannot be booted due to jailbreaking, you can refer to the following experience link: /article/c843ea0b76537877931e4aa0.html

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Hardware failure

1

If none of the above three conditions apply, it may be a hardware failure. If it is a hardware failure, you need to find a local Apple after-sales testing machine.