I have signal problems, cant do calls or calls stops in the midle.what to do?

Question

i cant do calls sometimes. some other times displays the message 'no sim' . pleese help

Answer 1

It is a software issue because I didn't have the problem with iOS5 and like myself others are saying they had it after installing iOS 5.0.1. There is no doubt however that a very small minority of people will have hardware faults though, there always are on the production line but in this case all evidence points to firmware 5.0.1.
And Apple has said nothing about it, the media have said nothing about it. They mentioned the Battery problems though because people actually used the Apple Care and Apple had to replace their phones, but for this issue nobody is doing that. I am not including you in this but so many people come here expecting a reply from Apple, it won't happen. Apple does not frequent these websites so any requests for word from Apple here will fall on deaf ears, it seems to be the direction that alot of companies are heading... Netgear are just another example of where you have to actually contact the companies support staff themselves to let them know about a fault because the forums are not being manned by support staff.
They replaced my iPhone by the way, I am sticking with iOS 5.0.0 and I am not getting "No Service". I don't want to risk going through the whole problem again even though it might not happen because not all iPhone 4's and iPhone 4S' get the problem. I will just wait until a firmware that doesn't appear to cause the issue comes out.