New iPhone 4s - most calls connect without sound

I had exactly the same problem and solved it!

The next time I made a call, I used the volume buttons to increase the volume in the earspeaker until I could hear the call.

I feel pretty foolish for not thinking of this sooner - but who would think the earspeaker volume would be set to nil by default on a new phone!

I hope this is your problem.

-Jerry

I have the same problem as gowilson on a black 64GB 4S (on AT&T in the US). I tried the suggestion from JerryWarren, but no luck. I have to toggle the speakerphone on and then off to get sound through the earpiece. If there are other suggestions out there, I'd love to hear them.

I am having the same problems as capaull, in the UK on O2 and have to toggle the speaker to be able to hear the person I am calling. I am thinking it's an iPhone 4S problem with my phone as there does not seem to be many users reporting this fault - ?.

I was having the same issue. I made an appointment at the Genius Bar and they gave me a new phone. It fixed this problem. Very happy now!

Just get your phone exchanged at the Apple Store. This fixed my problem.

Update on my situation. I went to the Apple store (waited an hour past the initial appointment time). The individual who worked on the phone did a reset, and had me set it up as a new phone. He told me to just resynch - NOT restore. I did the initial restore on a backup from my 3G, and the Genius thought that might have been the issue. That solved the problem, but then I lost all the settings on the phone, which is a major pain in the posterior portion of the anatomy. While my phone is now working, I'm less than thrilled at having to do all the rework to get my phone back to the state that I had it. Apple needs to develop a better restore, perhaps with an option that allows you to get more of your settings back but not complete. The choice between re-sync and restore can be a painful one.

+1 on this. I'm seeing same problem. I don't want to setup as new phone, but will give it a try. Genius Bar will be next after that.

I am having the exact issue with 4s that Gordon describes. Will send update if it get resolved.

same freaking problem....did a restore and did not help..

Same issue here I think and I restored from an iphone 3G 8GB on O2. Has everyone restored from a 3G who has this problem?

I went from a 3GS to the 4S when my problem occurred. I tried the suggestion above of setting it up as a NEW phone instead of restoring and it still happens on about every other call. Time to schedule a "genius" bar appointment.

I've experienced a similar issue... When I attempt to place a call using my Apple Headphones, it will automatically place the call in speaker phone which then disables any microphone (phone or headset). When I pull the headset out and attempt to make another call it goes right back into speakerphone mode and disables the microphone. The only way to fix it (temporarliy) is to restart the phone.

This problem still exists even after I went through a new set up on the phone. Any suggestions? Or should I just go to the Genius Bar?

Thanks,

Chris

Same problem in Belgium with a 1-day-old 4s. I can hardly hear the caller at maximum volume, but they can hear me. There seems to be no problem when using the headphone or speaker. So it does not seem to be a volume issue with my phone.

Tried all of the above, still no luck.

An intressting thing though, if I use Viber or Skype.

The problem never occours. Makes me think it´s a software issue?

Thought on that?