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AT&T Network Defect Affects Some iPhone 4 Users

July 8, 2010

AT&T revealed Wednesday that there was a software defect in its network that was limiting data uploads from Apple’s iPhone in some areas.

The defect means longer waits for users to send pictures, video and other content from their phones.

The defect is the second issue to arise since the new iPhone model went on sale two weeks ago. Last week Apple acknowledged an issue with the antenna on the smartphone, saying that holding the phone in a certain way might reduce its performance.

AT&T said Wednesday that a software glitch in its network equipment manufactured by Alcatel-Lucent is to blame for the slower upload speeds in the iPhone 4. AT&T said a fix is in the works.

A spokeswoman for Alcatel-Lucent confirmed to the Associated press (AP) that there was a software issue in the company’s cellular base station equipment.

But because Alcatel-Lucent isn’t the only supplier of base station equipment to AT&T, the problem only affects some areas. AT&T spokesman Mark Siegel told AP that the flaw affects about 2 percent of the company’s customer base.

The iPhone 4 is designed to be capable of taking on the full advantage of AT&T’s upload-speeding technology put in place in 2008. In theory, it is capable of uploads that are 10 times faster than the previous iPhone model.

But where the network is affected by the software glitch, users are reporting upload speeds limited to 100 kilobits per second, much lower than the speeds achieved by the previous iPhone model.

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