AT&T (http://www.att.com) has reportedly begun a fix for a glitch in software supplied by Alcatel-Lucent SA that was causing slower download speeds in some areas of the U.S. for customers using the iPhone 4 and other devices, reports “Bloomberg” (http://macosg.me/2/l).

Mark Siegel, an AT&T spokesman, said in an e-mail the company expected the issue to be resolved within two to three weeks. AT&T said earlier this month that fewer than 2% of its wireless customers were affected. Customers were experiencing slow responses when sending data such as photos or e-mail from their devices, Alcatel-Lucent said earlier this month.