Synopsis Lead

Apple Inc. has released an iPhone software update it says improves communication between the smart phone and wireless networks.

The iPhone 3G, which went on sale July 11, connects to cellular providers' speedier third-generation networks and was meant to deliver snappier web surfing and online video viewing than the year-old original model.

But some customers who shelled out $199 for Apple's newest gizmo flocked to message boards in recent weeks, posting complaints about dropped calls and spotty wireless broadband connectivity.

Cupertino, Calif.-based Apple did not acknowledge a problem until yesterday, and then provided few specifics about what, exactly, Monday evening's software update was designed to fix.

The iPhone 2.0.2 software update "improved communication with 3G networks," said Apple spokeswoman Jennifer Bowcock.