If you use a iPhone or iPad for some time, then probably at one point or another you encountered a problem that causes them to close out of the blue, even though you have enough battery available for them. In this idea, restarting after a few minutes will show more battery than you had before shutting down, or less, and now I ask you what the hell happened to iOS to generate such problems without displaying any alert message before shutting down suddenly an iDevice.
The basis of the problem can be two sources with two different solutions: iOS and the battery of your terminal. If the problem is based on Apple's iOS, then each time a simple simultaneous pressing of the Home + Lock buttons until the apple appears on the screen will restart the terminal without any worries, but if the problem is based on the battery of your device, then the only solution you have in front of you is to visit a service, preferably authorized by Apple, to replace the battery and not the complete terminal.
iPhone or iPad shuts down out of the blue - why?
Unfortunately, the iOS problem is extremely old and has been around since iOS 4, putting a terminal in DFU Mode for a reason still undiscovered in 4 years, which will most likely remain a mystery. The procedure recommended by me above does nothing but a hard reset of your terminal, it being restarted from DFU Mode, which is basically a module designed for software reinstallation, and a restore or reset of the system settings will only solve the problem temporarily.
In the case of the battery, the problem lies in such a unit that failed before the deadline, and simply replacing it at an Apple-authorized service will return the terminal to normal functionality, if the service wants to do it. If it does not, then unfortunately you will have to call an unauthorized service, but in this case you will give up the warranty of your terminal and risk receiving a counterfeit battery that could explode in the terminal, so be very careful .
Having said that, if you encounter the problem, now you know what it is.
