The problem with the iPhone 4 antenna will not be fixed by software update.

Apple has begun to send secret instructions to its employees at sales centers about how to talk to customers who complain about the loss of the iPhone 4 signal, if you touch the phone case in the lower left corner.



First, the employee must explain that a similar problem exists in almost all mobile phones. For example, iPhone 3GS is not recommended to touch the lower right corner. The situation can be corrected if you buy a special case made of rubber or plastic, which isolates the case from touching. In this case, employees are strictly prohibited to offer such covers for free.
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On the rectification of the situation using the firmware update is not reported. Thus, Apple officially took the position "everything is in order and nothing to fix."