I purchased the iPhone 5S today and all day I have been trying to register my thumb for Touch ID, it usually cancels and says to try again, sometime I finish the first part and it says to try with another finger. What am I doing wrong?
iPhone 5s, iOS 7.0.4
There are some tips in the following (such as ensuring both the button and finger are clean and dry and that you touch the button lightly without pressing it) that may help: http://support.apple.com/kb/HT5883
If that doesn't help, since it is brand new you may want to return it.
Help with Touch ID.
