iPhone 4 Call / Receive Issue

[AFPoster]

I just purchased my iPhone 4 yesterday and for some reason when I try to make a call or someone tries to call me it makes the sound of a dropped call and then I have to retry and same for the person calling me. It takes me about 5-6 times of clicking the same number before it actually dials out. Is anyone else having this issue or knows how to fix it?
Thanks

 

[hcho3]

It sounds like you iPhone needs some diagnosis. There could be number of factors. I would try restore and take it to apple store.

 

[esadb]

Funny you mention that. I noticed that with my iPhone when im done a call and say good bye to the person they hang up whatever.. My phone shows a Call Failed thing.. And prompts the Call Back and Cancel buttons..

Anyone else have this happen?