IPhone 4 voice call problems on 3G

I noticed at the weekend that my iPhone 4 was having trouble with voice calls. Incoming calls would sometimes hang up when I answered them, outgoing calls would take a very long time to connect (or freeze), and when I did get through to someone the call quality was extremely low (lots of stuttering and cutting out).
After trying just about everything recommended on various help pages (including reseating the sim card, refreshing the network settings, and restoring the phone), I still could not get it to work properly. I then tried turning off the 3G and, lo and behold, the phone worked absolutely fine! Voice calls were clearer than ever!
I contacted Tesco Mobile hoping they might be able to shed some light. They said there are no faults with the network and have arranged for me to return my phone. That could take up to 10 days though, which I can't really afford.
Does anyone know what the problem is here? Does the fact that it works fine with 3G disabled suggest that it is not a hardware problem?

I've been having a very similar issue that just started last night. I keep dropping calls and when I try to call out nothing happens at all. I cannot browse Safari through 3G either. It keeps coming and going. I was able to finally place a call out and then tried making another call later and it wouldn't work again. I tried the restore as well and nothing works!
I do not know if I should contact AT&T or Apple for the issue. I do have the extended warranty that I purchased with the phone but about a week after I got the iPhone 4 I had to have it replaced for issues I am not even sure that they would replace it again. I do not have a home phone I rely solely on my cell so I cannot wait to have it fixed or replaced but I am not going to keep a phone that doesn't work especially after paying so much for it!

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IPhone 4 Voice call problem when wifi is active

Not always, but randomly my voice calls (send/receive) establishes properly. However, neither me or the other party can hear anything. The most common times it occurred, is when the wifi is active. Any suggestion anyone please?
Additional Info:
I had my iPhone replaced due to the home button malfunction, and after a couple weeks, this started happening. Since I don't have warranty coverage anymore I can't replace it again. Came with iOS 5.0.1. After this started happening quite frequently, I upgraded to 5.1.1. Still same thing. A non-funcitoning home button was better than a non-functioning phone! Feels like I've been cheated !!

I think I've pinpointed the problem!
Whenever I use data (EDGE / Wi-Fi), the handset becomes quite heated. If I initiate a voice call at that moment, the dialer starts with the 'speakerphone' icon being pressed.Given that, no party can hear no party.
However, after a minute or two (when not using data) the handset becomes cold again (quite fast) and then if I initiate a call, the 'speakerphone' icon is not being pressed anymore and everything is normal!
Really donno, what is actually creating this strange problem!! Overheating battery? Overheating wi-fi chip? Overheating any other chip? Firmware? or just my luck!!
P.S: To keep the phone operation smooth, I've disabled wifi & cellular data at the moment! And all is running well. So, it must be something with data usage!

IPhone 5s Voice Call Issues

I've had an iPhone 5s (upgraded to 8.1.3) since mid-November and have been experiencing difficulties on voice calls ever since (I switched carriers as well). When calling specific contacts (family, friends etc.), the calls sound as though as I am on speakerphone, and there is a great deal of static and distortion present as well. The beginning of the call sounds as though the network is about to drop it before recovering it in a much lower quality. To the best of my knowledge, I have tried absolutely everything at this point, including: swapping the handset (three times), sim card (three times), resetting the device and even changing my number (was informed that it could have something to do with the "porting" of a number profile from one carrier to another). None of these moves have worked and I am still trying to decipher why I am encountering this problem (I have been in constant contact with my carrier who appears to have exhausted all ideas).
Any suggestions or thoughts are greatly appreciated.

I was having the same problem and also loosing battery life - it suddenly happened. I went online and saw where someone said to get rid of all the unused apps still sitting there, deleted all the old posts and yea! suddenly the problem has been fixed. Hadn't deleted the unused apps in quite sometime, so obviously draining everything.

IPhone 5 voice call quality fade in and out. Noise Cancellation interference?

I've been having this huge problem with the iPhone5. The evidence i've collected seems to indicate this is a problem with all iPhone5's.
On calls in certain places both indoors and outdoors, the callers voices over the iPhone5 fade in and out. Their voices occasionally completely fade completely away, and only come back momentarily. The low volume for 50% of the time forces me to raise the volume, but raising the volume does not help because when the voice does come back, the volume is too loud for my ears.
I went back to the Apple store and they are not able to help me. They suggested a clean restore, which I did. They offered to replace the phone, which I did, but it is the same problem.
- iPhone 5 vs. iPhone 4S, the fading does not occur. I make the call to the same voice mail system I have, and the sounds from the other side are consistently the same volume for the 4S, but fades in and out for the 5.
- I connected up a 8mm jack between my iPhone 5 and my mac in an attempt to record this problem. In that instance, the sounds from the voice mail DO NOT fade in and out. I did find out that the dynamic range on the iPhone 5 is MUCH greater than that of the iPhone 4S, for some strange reason.
- When I hold the phone up to my ear, the fading in and out does occur, but it is less noticeable. But it's still there.
- When I leave my work area the problem goes away. However, because the iPhone 4S on the same AT&T service does not have this problem, this leads me to believe it's NOT a lack of transmission power from the AT&T cell tower. Rather, it is a reception issue at the iPhone5 side.
- I turned off LTE, data and then made the calls. Same issue.
I use this phone to make 60 minute calls for conference calls frequently. I cannot use it. Please advise. I am seriously considering returning this phone. Except i've sold my old iPhone 4 already. I'm in a bad place. Please help.
Here's another post of a fellow with the same exact problem.
http://forums.macrumors.com/showthread.php?t=1456404
Apple, please look into this. I believe this is a problem with the noise cancellation software.

I've got an update on this problem with fading volume. I've isolated it to the set volume on the phone for voice calls when using headphones. When the headphone volume is set between 1 and 6 (out of 16 squares) the callers volume will consistently fade in and out. The fading which is normal to zero volume at 2-5 Hz is serious enough that normal conversation is impossible. When the volume is raised above 6/16 then the callers voice stabilize and I can hear all their words again. Unfortunately, at 6/16 volume their voices are too loud for the headphones.
Furthermore, when headphones are plugged in, and I initial a call after the iphone5 was idle for several minutes, the first dial tone has preceded by a very loud pop an the tone, as though there was too much pressure (charge) that was dissipated all at once.
Other details:
- I used 3 different earphones, iPhone 4 headphones, altec earphones, an the new iPhone 5 earbuds. Same.
- I turned on and off lte, data, Bluetooth, wifi. Problem persists unaffected.
- when switching to iPhones earpiece and mic, the fading is gone.
- I have 3 out of 5 bars where I teste this, in the city outside and on hwy 5 in central California. Same symptoms in all places I've tested.
- I have exchanged my phone at the apple store. Same issue with both iPhones an I suspect all ipjone5s.
- the ipjone4s does NOT have this problem when the volume is set lower. I can tell that the iPhone 5 must have a new audio filter to make the sounds have larger dynamic range. I liked the 4s better, because it is easier on the ears!

Iphone 4S - Voice Call

Hi all,
When I call a people by my iphone 4S, there is a problem of sound.
My voice, after a few minutes, becomes metallic and i listen to a series of sound noise.
I tried to update software version to IOS 5.0.1, but there is the problem yet.
How I can resolve this problem ?
Thank you,
Best regards

OK, so i have tracked it down to a single AT&T Cell Tower location in my instance, but it also just so happens to be at my office, which means I am affected by it all day. What is happening is that at this particular location, the AT&T tower is misconfigured or experiencing some type of technical issue, resulting in the inability of the cell tower to handle simultaneous voice and data. Siri uses data to match the contacts, names etc and hands off to the Phone dialer, which immediately experiences a call failure as a result of the 3G Data still being in use by Siri. You can verify simultaneous voice and data connectivity by placing a voice call and then attempting to use 3G data (you must not be using WiFi to determine if this is a problem with the Cell network). While in a voice call, launch the Speedtest.net Mobile Speed Test app. You will clearly see that 3G data services have all but ceased if this is your problem. End the Voice Call and run the Speedtest.net Mobile Speed Test again and 3G data will work fine.
I have reported the problem via AT&T's Mark the Spot App numerous times and had my colleagues do the same and called AT&T Wireless customer service to no avail. They simply refuse to acknowledge the issue is on their end. I personally know at least 5 other iPhone 4S users in my office who are experiencing the same issue and the results can be consistently recreated on all of their devices. And again, once they leave the office in the afternoon, all of their services return to normal and they can again make and place Voice initiated phone calls without the dreaded Call Failed. Thanks AT&T.

IPhone 4 voice call issues

My iPhone 4 sometimes goes into Facetime in the middle of a voice call. I don't have a screen protector that might block the proximity sensor. I have done a full reboot and am on the latest iOS. Any ideas what is wrong?

I've been having a very similar issue that just started last night. I keep dropping calls and when I try to call out nothing happens at all. I cannot browse Safari through 3G either. It keeps coming and going. I was able to finally place a call out and then tried making another call later and it wouldn't work again. I tried the restore as well and nothing works!
I do not know if I should contact AT&T or Apple for the issue. I do have the extended warranty that I purchased with the phone but about a week after I got the iPhone 4 I had to have it replaced for issues I am not even sure that they would replace it again. I do not have a home phone I rely solely on my cell so I cannot wait to have it fixed or replaced but I am not going to keep a phone that doesn't work especially after paying so much for it!

IPhone 5s in-call problems

I received my iPhone 5s last week and because I am the mother of an infant (and am clumsy), I thought I would get a very protective case. I bought a Lifeproof case but in calls, it would vibrate on and off the entire time. I thought something was wrong with my phone but upon doing a search, I found out that is a common issue with those cases. So I exchanged it for a Survivor+Catalyst case and in that case, in calls, I kept getting a terrible screeching sound. When I tried searching for issues with that case, I didn't find anything. So I exchanged it for another case - the same kind - and I have the same issue. At the same time, my husband's iPhone 5s experienced no problems whatsoever in his Lifeproof case, and now that he has a Survivor+Catalyst case, he has no problems with it either. Is there something wrong with my phone that is causing these problems? They only happen when in the cases but it seems odd that no rugged case seems to work with my phone. I need a case that is very protective. I am wondering if there is a speaker problem that only becomes apparent when in a case, perhaps particularly in cases that completely cover the entire phone. Please help!

Connect your iPhone to iTunes on your computer and do a Restore to Factory.
See here: Use iTunes to restore your iOS device to factory settings - Apple Support

IPhone 5 voice call speaker problem

I took my iPhone 5 back because the speaker at the bottom didn't work at the right(I know the left one is a mic) and I got my new iPhone 5 and I was calling my friend and I needed to put it on loudspeaker phone, and I could him but he couldn't hear me, what do I need to do, please help.

Then it is the hard ware problem
1. Power off Iphone
2. Leave there 1 min
3. Call someone and leave it without speaker then put speaker on
Important Go in a strong wifi spot

New iOS 8.1.2 voice call problem

I've recently updated my iPhone 6 to iOS 8.1.2. I am having a big issue after the update was installed. Now I can't hear the voice from the incoming and outgoing phone call at all? I tried to reboot my iPhone several times and reset network setting and the problem is still there? I am very disappointed on how the Apple software development team handle this kind of releases issues. PLEASE HELP!!!

Have you seen this web page? http://support.apple.com/en-us/HT203800
Two common causes with this is the in call volume and being connected to a bluetooth speaker which it is picking up when you call.

IPhone Google Voice greeting problem

I use Google Voice for certain business calls. It has a different greeting from my personal greeting. However, GV is intercepting all messages with the GV greeting, even when my personal number is called. Any suggestions for a remedy, please?

Hello.
I'm not sure if your problem has been fixed yet, but I had the same problem until today.
I turned on Hearing Aid Mode in Settings / General / Accessibility / Hearing Aids.
Seemed to fix the problem for me. Hope it helps you.

Lumia 820 voice calling problem

after the 820 update i can't here voice while calling....no clarity pls help.....

Thanks for the update, SonicBlue. Let's further verify if the issue is SW related or not. Try the following steps and see if the 'call' voice command will work:
1. Reboot the phone. Press and hold the volume down & the power key for 10-15 seconds until it vibrates and restarts. This won't erase any of your files, but you will need to re-set up the date & time settings.
2. Since the phone is already running Lumia Cyan, try checking if the system apps have already been updated as well. Go to Settings > swipe to applications > store > check for updates.
3. Try to use the speech feature using another language pack. This will help verify if the issue is related to the English UK language pack that you're currently using or not. Make sure that the phone's regional settings are correctly set as well. Some commands only work within supported countries. You can check this link for info about the availability of voice commands per country: Feature and service availability - Go to Speech.
Let us know the outcome.

IPhone 5S: does anybody has this problem. During a successful voice call all of a sudden people can't hear me while I can hear them

iPhone 5S: does anybody has this problem. During a successful voice call all of a sudden people can't hear me while I can hear them. Signal is strong and call quality (me hearing the other) is still very good but it looks as if I’m going on mute while I’m not muting my iPhone. When dropping the call and re-dialing it works fine again. It’s a brand new iPhone 5S but it now happened already 4 or 5 times in 2 days.
It feels like a hardware/iOS problem and not a network issue. It happend with iOS7.03 but I just see 7.0.4 is available so will install that one now.
Thanks in advance for feedback
Best regards,
Marco

Hello Jeff,
Thank you for providing so much detail about the issue you are experiencing with the audio on your iPhone. I would be concerned too if the audio on my iPhone was not working unless using speaker phone. I found an article with some steps to take when you are experiencing issues like this:
iPhone: Can't hear through the receiver or speaker
http://support.apple.com/kb/TS1630
Thank you for using Apple Support Communities.
Best,
Sheila M.

IPHONE 4S incoming calls go directly to voice mail. This is a brand new replacement phone. Prior phone didn't have this problem

IPHONE 4S incoming calls go directly to voice mail. This is a brand new replacement phone. Prior phone didn't have this problem

Slide up from the bottom of your display to access the control panel.
Look for the button (should be at the top) that shows a crescent moon.
Tap that button. It should say "Do not Disturb: Off".
Then try it out and let us know if it worked.

IPhone 5s screen flashes on and off during voice calls?

Operation is perfect with every other app except whenever the phone detects I'm making or receiving a voice call. No problem on facetime.
The screen will instantly black out and to bring it back I have to press the main button, then screen will reappear but only for an instant before blacking out again.
It does not matter if the phone has been in standby or if I've been actively using it as the call comes in.
Its about the most frustrating thing I can imagine.
One clue, while I'm talking the phone will often mute itself as if my cheek activates the mute function.
I use no screen protector but I do use a case, it still does it when I take the phone out though.
It has done this since new and through at least one software update
Any help really appreciated, thanks,

My wife rang Apple and while both of us spoke to Apple on the land line using hands free and spoke to each other using our iPhone 5s we were able to see that my big paws shadowed the proximity sensor each time I moved in to stab a button! Problem solved! I didn't even know there was a proximity sensor and your reply would have led me to it, thanks.

Voice calls breaking up on EDGE with iphone and AT&T

When I am on a voice call using the iPhone on EDGE the callers voice often breaks up. This also happens when I dial voicemail and listen to messages.
This is my first time using AT&T. Is this normal for AT&T's EDGE network or is this possibly a problem with my iPhone. This happens even if I have full bars on EDGE. I've tried resetting the phone as new and getting a new sim card and updating the firmware but voices still break up. Has anyone else experienced this?

I got a replacement iphone and the problem with voice calls breaking up persists. I have no idea what the problem is since there are so many variables and I don't have all the information. I just know that I never had this sort of problem in the 9 years I was on Verizon with any phone. I really enjoy this device for everything besides the phone functionality. It would be cool if I could just pay for data on this phone without the voice so I could get a Verizon phone for voice and keep the iphone for data but I know that would never happen. Well, I still have a couple weeks to figure out what I'm going to do.

IPhone 4 voice call problems on 3G

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