Backing up updating and restoring ios software
Ideally you can backup all your i Phone’s data to your i Cloud account, including the apps and app data, Camera Roll photos, purchased music and other media, messages, wallpaper and so on.
But if you haven’t noticed yet, your free i Cloud account is limited to 5GB of space for all your i OS devices.
Reiboot and Rei Boot (Mac) enables you to fix i OS freeze, i Phone crashed during i OS 10/9 update, Recovery Mode stuck, DFU stuck, red i Tunes logo stuck, etc. Then Rei Boot will automatically detect the condition of your i Phone.
You can either click "Enter Recovery Mode", "Exit Recovery Mode" or use both according to the detecting result to reboot your i Phone.
Doing so voids Apple's user-end-agreement and Apple reserves the right to deny service to any devices that have used unauthorized modifications or software.
If you've just upgraded the hardware, updated to i OS 10, or restored, give things a day or so to finish up and go back to normal. That's especially true with things like Live Photos, 12 megapixel cameras, 4K video, i Message apps, Siri integrations, and more.
So the screen stays on, storage gets written to, WI-Fi and maybe cellular radios stay lit up, and power gets consumed. When you pick it back up, note down how much battery life you have left again.
You can also use these tricks if your i Phone stuck in Recovery Mode (red i Tunes logo)/reboot loop during updating to a new i OS version and if your i Phone is working fine and suddenly it freezes. Keep pressing the Home (Volume Down button for i Phone 7 and i Phone 7 Plus) and the Power button simultaneously until the Apple logo comes back on again.
As we all know, restarting your i Phone seems to be an omnipotent trick to solve most minor problems on the first try. Then release both buttons and your i Phone should boot up successfully and work normally.