The alarm functionality in Windows Phone 7 may be making some HTC 7 Mozarts freeze and become unresponsive, according to the observations of users on the XDA-Developers forums.
The limited number of reports suggests this issue may not affect all Mozarts the same, or the steps needed to trigger it are specific enough that most users don’t run into any problems. The common thread among the reported freezes is that an alarm was set and goes off as planned, but the user ignores the phone for an extended period of time. When they go to finally dismiss the alarm, their Mozart locks up.
Another user found that while the Mozart would occasionally still work after dismissing the alarm, all sound on the phone was disabled.
As there doesn’t yet seem to be widespread reporting of the issue, neither HTC, Microsoft, nor Orange have commented on the bug, so we’re left to speculate for the moment.
Have any readers who are exceptionally heavy sleepers noticed any problems with their Mozarts after ignoring an alarm for too long? If this is an HTC problem, it’s conceivable that the HD7 or Surround may also demonstrate similar behavior. Let us know if you notice any alarm-related issues on these models, as well.