Does iOS 4.0.1 make a difference?

Cnet: Last Thursday, just before Apple called a press conference to address concerns with the iPhone 4's antenna, the company issued its promised 4.0.1 software update. The release didn't offer new features, and it didn't change anything about the controversial antenna, but it did alter how bars are displayed on the handset's signal meter. CNET has spent the last few days testing the update to determine what it means for you. But before we get to our findings, a bit of background is necessary.

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