Summary: Two quick ExtraBITS for you this week — an explanation of why the CDMA iPhone 5 has an unlocked GSM SIM slot and Glenn Fleishman’s Boing Boing report from the unusual XOXO conference.<p> </p><p>Read the <a href="http://tidbits.com/article/13292">full article at TidBITS</a>, the oldest continuously published technology publication on the Internet. To get a full-text RSS feed, help support our work and <a href="http://tidbits.com/member_benefits.html">become a TidBITS member</a>! Members also enjoy an ad-free version of our Web site, email delivery of individual articles, the ability to make long comments with live links, and discounts on Take Control orders and other Apple-related products.</p>
