Since iPhone4S has been released, the user opinion has divided into two - some of them are extremely happy but others have endless problems. The new trouble linked to the phone is about SIRI. People are complaining of being unable to access service at a time.
SIRI used to have trouble in accessing the network but it only lasted for minutes. Now the only answer it can give is: “I am sorry, I am having trouble connecting to the network.” However, the problem has not occurred for every user, but it still is timely.
Beside SIRI trouble, the users cannot hear the person “on the other end of the wire” during some calls. But it can be fixed by plugging in a headset or pressing the mute button twice or by disabling SIRI.
Is it software bug or a hardware problem, is still obscure.