Apple has released iOS 4.0.1 update for the following iPhones: iPhone 4, iPhone 3GS and iPhone 3G. The update changes the formula used for calculating signal strength and displaying it in the bars, as they said 2 weeks ago.
From the notes: “Improves the formula to determine how many bars of signal strength to display.”
This update will not fix the antenna issues experienced by some iPhone 4 users.
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