IPHONE 4s call failed??!!!

To all of you experiencing this issue!

"My story" har been described by myself and by/among others.

So, this is todays question.

Background intel (my self)

I am now using my 3rd iPhone 4S 16gb White, and I still have the same issue.

I have tried EVERYTHING!

Background intel (others)

Other users describes the very same thing. Some users have their 6th iPhone, and they are experiencing the same problems! They have tried EVERYTHING!

Asking science, asking statistics, ask Einstein:

Well, many of us have had their phones replaced. This is my 3rd, and many of you are in the same mudd.

My patience is now at a critical low level, as I actually looses my custumers when my calls are dropping!

So, if we look deeper into to this: how likely is it that the problem is hardware-related?

The question is how many iPhones are there in the world and how many iPhone have been sold worldwide. The company sold 20.34 million iPhones as of July 19, 2011. The company sold73,734,000 iPhones since 2007. So there are approximately 73 million iPhones in the world.

If my iPhones have the same problem (1, 2, 3 phones in a row) and other users had their replacement for 6th time, why is'nt there a story about this, headlined on new york times?

If "we" are experiencing this, then MANY other would have experenced the same.

Is it possible to be this unlucky?

I rather think not, because there is more likely to win a lottery!

Well, there is ONE thing that I've not tried yet. It is about the restore process.

It's funky however, why should a backup (user settings, data, apps) create a call-failure?

I have now set up my phone as a new one...

Usually I get a call failure once/twice a week, sooooo I will keep you posted.

To you that claims, turn off this and that, and upgrade to iOS 5.1... Im glad it helped you guys out, but it was not the solution!

My original message, or one of them!

To get up to date, just add two more iphones, 500 angry Kens, several disapointsments with customers........

1. Ongoing Call
2. Called Failed
3. Notification Center "Call Failure"
4. Phones unstable for 5 second
5. No Service
6. Searching
7. And AT LAST I can call my custumer back to tell how sorry I am about my crappy iPhone!

The "only reason" for posting this, is just to let Apple know ONE MORE have the same exact problem!My Story (in short)Location: Norway, good 3G receiption, operator Telenor.

1. 3 different MicroSIMs tested, last one verified by my operator apple team!
2. 2 iPhone4S (16GB) tested, same happens with "new" replace unit!
3. All, and I mean ALL of google forums tips/tricks/turn this and that on and off
4. Latest release A06 (iOS5.0.1)
5. My Operator is running debug from their end, just to eliminate.

https://discussions.apple.com/thread/3400145?answerId=17345970022#17345970022

our problem seems to be siri related!! look at https://discussions.apple.com/thread/3404857

if you can't hear anything on an outgoing call push the speaker button on iPhone 4s, then you should hear something.

Your step 2 is really the most full-proof way to determine if something in the software is having problems. However some of your symptoms you've described sound familiar and MAY in fact be a fault with the phone anyway.

One thing you could pay attention to is whether or not the same symptoms are occurring in similar places, or in random locations?

When setting up as a new phone, you'll want to make sure you've properly synced your contacts and other information back to your PC first so that you won't lose anything important. You can follow this article here for assistance:

http://support.apple.com/kb/HT4137

If the friendly folks at Apple support would combine the postings here with those on https://discussions.apple.com/thread/3404857 and maybe others, they might discover a pattern and make some sort of statement about this problem.

Guys those original posts here are talking the same problems

https://discussions.apple.com/thread/3396554?tstart=0

https://discussions.apple.com/thread/3482725?tstart=0

Here is my own experience...........

"Ok i'm in French West indies Caribbean island and my Carrier is Orange, i've tried a brand new sim yesterday not microsim, they cutted it for me, not successfull, today i asked a guy at the shop to borrow me his microsim from orange, those micro sim they sell in contracts, i tested it for about 15 minutes in my 4S 5.0.1 it worked flawlessly no error on sms nor 3G or calls, unfortunelly they didn't had anymore Orange factory microsim today, they ordered for me from another shop in 48h i'll be sure about it, they'll change the old brand new not working sim with the microsim for free, i'm waiting but i've faith because i saw it working with no problems, even with the bug when you pull out the sim from the phone the carrier is still working with signal, with the microsim, this bug is not happening anymore you see immediatly the message NO SIM....i didn't try to reboot the phone but that's a good beginning...."

OK, am not an expert in iphone. But after checking the expert-exchange forum, here's something that you can give a try.

OPTION 1 - from expert-exchange

"Did you try turning 3G off? 3G is the source of a lot of call failures"

OPTION2

https://discussions.apple.com/thread/3631922?answerId=17214500022#17214500022

try a networks settings reset

settings-> general-> reset-> "reset network settings

this is the post from Scott Dickson it really helped me , i did restore the iphone 4s on 16jan2012 hope all the people who has failed call problem on iphone 4s will be sorted as my phone is good now just do the restore the iphone as he has wrote on his post please try and if it works for few days please say thanks to scott thanks scott dickson for help i had problem call failed now three days no problem

I did a lot of research and found out that Apple released an iOS 5.0.1 build (9A406) intended to address the iPhone 4S signal problem. A build is not an OS upgrade. It is like a repackage of the same firmware version with an inclusion of a patch that addresses a "minor" problem. In the contrary however, this problem is quite big - several users allover the globe are talking about this issue (Check out this thread at Apple Support Communities). So when I checked the version of my phone's firmware, it was in deed iOS 5.0.1 (9A405). So I went ahead and upgraded, and the problem hasn't resurfaced since.

How to update your iPhone 4S iOS to the 9A406 build - properly.

I noticed in several forums that people complain about the build not working properly. Or that the build loses effect after 24 hours. So to answer that, the first statement may be true. I work as a product engineer in an electronics company and it is possible for a problem to be common to a set of devices but not to all. So a "build" or solution developed to target the problem surfacing in a one set of devices may not work for the other sets. In order to come up with the correct (comprehensive) fix, the commonality of the failing devices have to be correctly traced and identified. Only Apple can do that since they have the complete record of all the serial numbers, models, IMEIs, and modem firmwares of all the manufactured iPhones. The second statement however does not make sense to me. A software fix does not have an expiration date. It's either the fix did not work at all (which means that the observations saying that it did temporarily in some phones maybe be inaccurate), or something other undocumented condition in the iPhone is going on that's causing the problem to persist. Below is a step-by-step tutorial on how to check if the 9A406 build will work on your phone.

Step 1. Check your iPhone 4S firmware version. On your phone go to Settings > General > About > Version (see screen shot below). If the version says 5.0.1 (9A405) or earlier and you're experiencing the signal problem described above, then your phone is a candidate to the 9A406 fix.

Check your iPhone 4S firmware version to see if you can upgrade to the iOS build 9A406 if it isn't already.

Step 2. Connect your iPhone 4S to iTunes and backup. On the left sidebar in iTunes right-click on your device (name of your iPhone) and select "Back Up" (click screen shot below to zoom in). The backup procedure will create a copy of your phone's contents and settings to your computer. This step is extremely necessary because Step 3 will erase all contents and settings from your device. Once "Back Up" is selected, the top portion of iTunes should show these statuses: "Backing Up" and "Syncing".

Right click on iTunes Devices and select Back Up to back up your iPhone 4S contents and settings to your computer.

Step 3. Restore. Click "Restore" in the Version panel in iTunes and this will prompt you to Back Up. You can select "Don't Back Up" because you have already done that in Step 2. A second dialog box will then prompt you if you want to restore your phone to its factory settings. You go ahead and select "Restore". This action will download the latest iOS build from the Apple server and install it to your device. This could take a while, depending on your internet connection speed. Click Accept when the Installation End-User License Agreement appears so the installation will start.

Click Restore Factory Settings in iTunes to start downloading and installing the latest iOS build on your iPhone 4S.

Step 4. Restore from Back Up. When the installation completes iTunes will ask you if you want to Restore from Back Up or treat it as a new iPhone. Restore from Back up will put all your previous contents and settings back to your device. If you select treat as new iPhone, you will have to perform iPhone activation from scratch. Select "Restore from Back Up".

Step 5. Confirm firmware version. When data and settings restore completes, you'll see your iPhone's latest firmware version when you go to Settings > General > About > Version. Your iPhone 4S signal problem should already be fixed at this point.

My iPhone 4S has been running smoothly for over 7 days now. Let me know if Apple's 9A406 build worked for your iPhones as well.

You can try updating to 5.1 b3, looks like that solves the problem.

Here's the link to the thread where the same issue is been discussed and a lot of users have reported success after the update !

https://discussions.apple.com/thread/3396554?start=810&tstart=0

Thanks a lot, ashok1975 and of course spesial thanks to Scott Dickson!

Vielen Dank!

Щиро дякую!

I have followed that brilliant instruction and now I have iPhone 4S instead of iPod Touch 4S!!!

The solution of my "SIM failure" and "dropping network" problems is on the page:

https://discussions.apple.com/thread/3400145?start=135&tstart=0

P.S. It is really nice device... . I mean iPhone 4S. 🙂)

hi i had this problem in jan 2012

i thought of sending the phone for repair but i found this advice so please follow this

this is the post from Scott Dickson it really helped me , i did restore the iphone 4s on 16jan2012 hope all the people who has failed call problem on iphone 4s will be sorted as my phone is good now just do the restore the iphone as he has wrote on his post please try and if it works for few days please say thanks to scott thanks scott dickson for help i had problem call failed now three days no problem

I did a lot of research and found out that Apple released an iOS 5.0.1 build (9A406)intended to address the iPhone 4S signal problem. A build is not an OS upgrade. It is like a repackage of the same firmware version with an inclusion of a patch that addresses a "minor" problem. In the contrary however, this problem is quite big - several users allover the globe are talking about this issue (Check out this thread at Apple Support Communities). So when I checked the version of my phone's firmware, it was in deed iOS 5.0.1 (9A405). So I went ahead and upgraded, and the problem hasn't resurfaced since.

How to update your iPhone 4S iOS to the 9A406 build - properly.

I noticed in several forums that people complain about the build not working properly. Or that the build loses effect after 24 hours. So to answer that, the first statement may be true. I work as a product engineer in an electronics company and it is possible for a problem to be common to a set of devices but not to all. So a "build" or solution developed to target the problem surfacing in a one set of devices may not work for the other sets. In order to come up with the correct (comprehensive) fix, the commonality of the failing devices have to be correctly traced and identified. Only Apple can do that since they have the complete record of all the serial numbers, models, IMEIs, and modem firmwares of all the manufactured iPhones. The second statement however does not make sense to me. A software fix does not have an expiration date. It's either the fix did not work at all (which means that the observations saying that it did temporarily in some phones maybe be inaccurate), or something other undocumented condition in the iPhone is going on that's causing the problem to persist. Below is a step-by-step tutorial on how to check if the 9A406 build will work on your phone.

Step 1. Check your iPhone 4S firmware version. On your phone go to Settings > General > About > Version (see screen shot below). If the version says 5.0.1 (9A405) or earlier and you're experiencing the signal problem described above, then your phone is a candidate to the 9A406 fix.

Check your iPhone 4S firmware version to see if you can upgrade to the iOS build 9A406 if it isn't already.

Step 2. Connect your iPhone 4S to iTunes and backup. On the left sidebar in iTunes right-click on your device (name of your iPhone) and select "Back Up" (click screen shot below to zoom in). The backup procedure will create a copy of your phone's contents and settings to your computer. This step is extremely necessary because Step 3 will erase all contents and settings from your device. Once "Back Up" is selected, the top portion of iTunes should show these statuses: "Backing Up" and "Syncing".

Right click on iTunes Devices and select Back Up to back up your iPhone 4S contents and settings to your computer.

Step 3. Restore. Click "Restore" in the Version panel in iTunes and this will prompt you to Back Up. You can select "Don't Back Up" because you have already done that in Step 2. A second dialog box will then prompt you if you want to restore your phone to its factory settings. You go ahead and select "Restore". This action will download the latest iOS build from the Apple server and install it to your device. This could take a while, depending on your internet connection speed. Click Accept when the Installation End-User License Agreement appears so the installation will start.

Click Restore Factory Settings in iTunes to start downloading and installing the latest iOS build on your iPhone 4S.

Step 4. Restore from Back Up. When the installation completes iTunes will ask you if you want to Restore from Back Up or treat it as a new iPhone. Restore from Back up will put all your previous contents and settings back to your device. If you select treat as new iPhone, you will have to perform iPhone activation from scratch. Select "Restore from Back Up".

Step 5. Confirm firmware version. When data and settings restore completes, you'll see your iPhone's latest firmware version when you go to Settings > General > About > Version. Your iPhone 4S signal problem should already be fixed at this point.

My iPhone 4S has been running smoothly for over 7 days now. Let me know if Apple's 9A406 build worked for your iPhones as well.

Scott Dicksonat 4:00 AM

well MOO DANG if you've tried everything and didn't get what you need i guess this would only happened when the wrong use of iPhone so you should go and visit the nearest APPLE store and replace your iPhone 0therwise you may harm your iPhone before it shows more problem replace it buddy.....................those step i've told you should work infact those steps are working.

http://manuals.info.apple.com/en_US/iphone_user_guide.pdf read it 🙂

ummm.....adript buddy have you tried ERASE ALL CONTENTS SETTINGS AND IPHONE well this is the last option that'll resolve your major problems if you haven't tried please try it i'm pretty sure that this option will solve your evryproblem if you still don't know why your iPhone has failed the call here i've the guding of iPhone 4s read it hope you'll find something useful http://manuals.info.apple.com/en_US/iphone_user_guide.pdf 🙂 Thanks

Try resetting network settings and re-seating the sim card. Also, take it out of the case and re-try some calls. If that doesn't work contact AT&T and find out what the coverage is in your area. It all of that fails restore the device in iTunes and set it up as a new phone. Updating iOS helps as well.

I've had a mixed experience.

• I've had a couple of calls where the other person couldn't hear me at all but I could hear them
• I've had calls that imeediately drop as soon as I swipe to answer
• Calls that fail straight away beep beep beep call failed
• Calls that drop part way through
• And some that are absolutely fine...

My old 3GS by comparison was a heck of a lot better at 'phone calls' 🙂

I'll try and set it all up clearly enough so we can all reach a conclusion. I will update this with your testing results. Please be accurate in you statements and take time to read what others said so you can contribute in a better way.

PROBLEM

1. Device: Iphone 4s (5.01)
2. The device suddenly ends the call showing a "call failed" message
3. No sound, signal loss, or tone is heard before or after the cut. It just halts all comunications
4. The connection to the cellular network resets itself showing the search icon and then connecting again.

FACTS

1. Not a simcard issue. I've replaced mine and my wife's and still the call failed bug persists. Most users reported the same.
2. Not a Siri related issue. My phone is a Spanish one and has no Siri integration yet.
3. Not a network specific issue. Many users in this forums from different networks are claiming to have the same issue.
4. Not a network intensity or quality issue. My office is really close to a cellular tower. I constantly have 5 bars on 3G and still the cuts persist.

CLUES (need futher testing)

1. Failure rate As stated by many users and myself on two different (brand new) devices the failure rate is between 75% to 100% on 9+ minutes calls.
2. Environment
   
   1. 3G network switching. Issues on my devices always happened on 3G areas
   2. Wifi network. Issues on my devices have happened on places where I also connect trough wifi like home, office, etc...

I'd really appreciate some apple support staff taking care of this (a 20K+ replies claim).