Newest operating system with a Cisco IOS 4.0.1, according to Apple, could increase the level of the bar that shows signal strength. Announcement up date of the previous operating system was performed before Apple held a press conference to explain the case the iPhone 4.
According to Consumer Reports, iPhone 4 is not recommended to buy mobile phones because most users complain about the problem and the antenna signal is bad. Mobile phone users were "forbidden" touching the bottom left side of the device because it could interfere with the antenna work.
As a solution, Apple offers a rubber casing that can prevent the disruption of the function of the antenna when the user touched. However, Apple recently acknowledged the weak signal at the fourth-generation iPhone mobile phones because of software problems.
