After the problems with battery now there are problems related to, call quality made with an iPhone 4S terminal, but we are talking about calls made using either a headset or another handsfree device. Many owners of iPhone 4S terminals complain on the Apple company forums that they experience an echo effect in calls made using headphones or other handsfree accessories. It seems that within a maximum of 1-2 minutes after initiating a call, users start to hear everything their interlocutors say with an echo, and the problem would only be in the case of iPhone 4S terminals.
When using the Apple hands free headset with the phone during a call, I get an echo problem. It does not occur immediately. It can very from 30 seconds into a call and as far up to 9 mins in before it starts the annoying echo. If I unplug the headset it goes away but will return when I plug the headset back in.
For normal calls made with the device there are no problems, so from this point of view we can stay calm, but if you want to use the headphones to make a call, it would be good to know that there will be problems. Some users report that the echo appears in a maximum of 2 minutes after initiating the call, others report that the problem occurs after 9/12 minutes, so we are talking about a software bug in iOS 5. Apple could solve the problem very simply and it will more than likely but an iOS 5 update is needed for everything to return to normal.
