Apple has recently released an update to its iPhone 4 devices to developers and today is available to all. The iPhone 4.0.1 update is supposed to improve the formula to determine how many bars of signal strength to display for the iPhone 3G/3GS/4 devices. Not sure if this will fix the antenna issues some i4 customers are experiencing. Thus far, reports are showing that it literally raised the signal bars on your display. Maybe Apple will mention it during their press conference today.
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