If you have installed iOS beta 7 5 yesterday and by chance you reset the terminal after the first installation, then you noticed that the operating system boots extremely hard on our iDevices. Of course, no one has any explanation for this rather complicated problem, but probably Apple Lossless Audio CODEC (ALAC), activated some new services in iOS 7, or activated who knows what other logging or boot verification systems. Regardless of what Apple changed in the boot process, this will be resolved until the release of the final version of the operating system, so you don't have to think that the problem will persist even then.
Unfortunately, in the meantime, you have no way to solve the problem, because you cannot do it jailbreak for iOS 7 of your iDevices, so either return to iOS 6.x, or learn to "survive" with this problem and try to reset your terminals a little less often.
