Finally, there's a "very rare" bug that could lock users out of their phones for hours at a time. Because of an issue with the phone's Trusted Platform Module, you may be "unable to unlock your phone after entering your PIN and it keeps letting you type even though you entered your pin correctly." Anyone who encounters the problem should let their phone sit for one to two hours and avoid turning it off, since that might make the problem worse and require a reflash of the phone.
Overall, Aul said that the new build is "faster, more stable, and more polished overall" and that it has been in use at Microsoft for a few days. The company still hasn't given a definitive launch date for the mobile version of its new operating system, other than to say it will be coming after the public launch of Windows 10 for PCs and tablets on July 29.
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