Following up on this weekâ€™s report detailing issues with microSD card stability when installed in the Samsung Focus, AT&T has released an official statement addressing the issue and suggesting that customers wait for the release of certified cards tested to work in Windows Phone 7 devices with user accessible microSD slots.
"Windows Phone 7 requires a certified high-speed microSD card for optimal performance. Because the Samsung Focus is expandable via a microSD card, only microSD memory cards certified for Windows Phone 7 should be used. This information is not currently marked on any microSD packaging in market today. As a result, we are advising customers to delay purchasing an external microSD card until the cards identified as "Certified for Windows Phone 7" are available commercially or in AT&T stores."