Windows Phone 7 Bugs
While a largely successful new mobile operating system, Windows Phone 7, like all other systems, isn’t without the odd bug. These might be device specific or universal across the platform, but the majority can be resolved by restarting your device.
Here are some common bugs:
Zune and Marketplace crash or freeze – these problems may be due to memory issues; they are common in devices where additional microSD memory can be inserted. If your device doesn’t have additional memory, the phone's on-board memory is likely suspect, and you should speak to the vendor.
Camera settings – for some reason the Windows Phone 7 camera settings don’t save! This means if you set a particular zoom, for instance, and leave the camera app, when you return to the app the zoom has reset.
Screen freeze – some users find that their phone's screen will no longer respond in the correct manner without restarting. This problem is not unique to Windows Phone 7 and is likely to be device-centric.
Email sync with Exchange 2003 – there are various sync problems with Windows Phone 7, most notably with Microsoft Exchange 2003. At present there is no fix for this problem other than to use a more recent version of Exchange.