I've used Do No Distrub (DND) succedssfully since it was introduced. I have it set to be automatically in DND mode from 11:00 pm - 7:00 am. Just the other day, the phone started remaining in DND outside of those hours. The only way to take it off DND is to turn DND off completely. I have not made any changes to the phone settings or the OS. I installed one app about the time this started, but because (as it was the ONLY change) I thought it might be related to this I uninstalled it, and restarted the phone, but it continues in DND mode. Any ideas? iPhone 4 on OS 7.
