Last week, Apple released a statement regarding iPhone 4’s reception problem. Apple acknowledges that although it is normal for a phone to drop couple of bars when a consumer holds a phone, iPhone 4’s bar drops are not normal.
The problem apparently, is how the iPhone calculates to show the signal strength. Apple says their formula for calculating signal strength is flawed that shows 2 or more bars than the actual signal strength is. In fact, the calculation for the signal strength was flawed since their first iPhone.
However, to fix this, Apple has announced to adopt AT&T’s recommended formula and will issue a software update within a few weeks.