There is a trick that worked when trying to unlock an iPhone / iPad / iPod touch while stuck at the Apple logo after installing or restoring to iOS 9.
Many of our readers have told us that this problem had occurred at home. As we had not had the problem the first time, we redid a restoration to be faced with this block. Well, this has not missed, we managed the first shot to be blocked.
Specifically, the restoration stopped while installing iOS 9 was about a third of the process (the white bar on the iPhone). And an iTunes message clearly told us that the restoration stopped because of the iPhone.
To bypass this issue, simply press between 2 to 3 seconds both buttons Home and Power at the same time, and immediately you will see that progression bar on the iPhone will move suddenly to arrive almost to its half. At this point, you release both buttons and restore complete its process. You have to do the 2-3 seconds holding both buttons otherwise rebooting your device will not be.
For us, this method worked the first time. Tell us in the comments if this trick has helped you or not.