iphone 4s ending my calls

I have the same problem. I become aware two months ago but I guess it's happening almos since the beginning... it's just that I surely thought that it was a network problem...

I have changed the sim card, reseted the network configuration, switched-off the movil data.... nothing works... I'm starting to think that this model is a piece of **** as a telephone.... I can't believe that Apple don't do anything to fix this... it's obvious that is happening everywhere... Certainly after going through the nightmare of using iPhone 3G updated to iOS4... now this... Apple is letting me down a lot.

Have you got a case for your 4S? I know there was problems with bad connections because you insert the sim into the side of the iPhone 4 and people's hands were in the way.

No. I have not a case. It's not a problem of low signal if you mean that. It happens almost always after 2-4 minutes of conversation... it appears an End Calling Error... sometimes it says "No Service" and start searching a provider... sort of auto-reset... it seems to me a hardware or firmware problem. Searching in internet it seems it's happening a lot of people. I guess it's not more evident because each time people use more the phone for Internet more than to call... and when it happens, you tend to think that it's a punctual issue or that you unconciously touch something... till becames evident that it's not so.

Im sorry. It I dunno why would be the case for that. Book an appointment in the Genius Bar ad they will look at it and if needs be replace it regardless what model or if it's under warranty or not.

Good luck and hope you get it fixed. They are pricey phones

The sim reader inside the iPhone may be lose thanks the only thing I can think off