Apple releases iOS 4.0.1 update to fix signal bar issues

Apple made good on its promise of a software update for the iPhone 4

The update contains bug fixes and improvements for "the formula to determine how many bars of signal strength to display". iOS 4.0.1 is compatible only with the iPhone 3G, iPhone 3GS and iPhone 4.

This is the update that two weeks ago Apple said was coming. In an open letter at that time, Apple said that the problem some people are having with reception and bandwidth dropping off when gripping the iPhone 4 in a certain way is linked to software that incorrectly displays the phone's signal bars. The update was promised to make the signal bars display more accurately and more clearly.

Apple released a beta version of iOS 4.1 to developers only on Wednesday that also appeared to include the same restructured formula for displaying signal strength bars.

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