Q: iPhone 4S is loosing connection with Carrier after iOS5 update

the same problem after upgrade, i´m from Mexico, the carrier told my lose my setup but they dont really know what´s happening, they didn´t fix the problem.

Im having the same problem here as well. Im in Trinidad and Tobago and my iphone 4s was working perfectly fine before i upgraded to the 5.0.1 software. Now i cant make calls or receive. Everytime i try to make a call its say " Call fails" and then its searches to connect to the network. I have tried restoring it 3 time to the factory settings in itunes but it still has the same problems. It has to be something with the 5.0.1 software as my phone worked perfectly fine before.  Is there anyway to go back to the 5.0.1 software? Apple needs to do something about this

Ranram318 Exactly like You have the problem, and if you try to call someone 5 or 6 times you can do it. I send a report

People can use this link to report this issue to apple https://bugreport.apple.com, login with your apple id and pass Select new problem and explain the problem

Carlos, I have tried to send a report at the link u mention but keep getting the following message -

You must be a registered Apple Developer to file bugs via Bug Reporter. Register at http://developer.apple.com/programs/register/devbugs@apple.com.

try again had the same problem dont worry

Having the same problem here in China. Unlocked phone (4s) was bought in Germany. Functioned fine (only issue was that I kept getting network welcome messages every 2 minutes... which only happened when using my sim with the iphone...). After the 5.0.1 upgarde I can't make or receive calls... tried complete restore.. didn't help..

PLEASE FIX THIS ASAP!!!

It seems new iphone launches are getting worse and worse...

same problem for me in Denmark. after Update to iOS 5.0.1 no carrier connection. have tried everything.

Apple fix it

I have the same challenges. I received a new IPhone 4s and updated to 5.01. After the update I experience

1. Buzzing noise in the speaker while it makes a call (goes away when/if it establish a call)

2. The signal strength goes up and down, mostly down. It is very hard to make a call inside a house or even send a text message unless I am close to a window.

3. It randomly complains about the SIM card not being valid and require a reboot or something similar. The same card works excellent in the previous phone.

For the sake of completness, I do not know if it worked before the update as it was updated in new condition. I tried to re-install the software using Itunes but it only deleted a few apps.

Same problem here!
Before upgrading to iOS 5.0.1 everything was running fine.
I hope Apple reads this and fixes this issue ASAP!

Same here in Spain. I blame myself for, after 4 years of using iphones, not remembering to wait a while before installing new updates, specially if your iPhone is not working bad.

I suppose we'll have to wait for Apple to realize about this and the battery problems and 5.0.2 :-/ Hope it doesn't take very long.

Re: iPhone 4S is loosing connection with Carrier after iOS5 update

Nov 12, 2011 1:39 AM (in response to Jirka Mraz)

I have the same challenges. I received a new IPhone 4s and updated to 5.01. After the update I experience

1. Buzzing noise in the speaker while it makes a call (goes away when/if it establish a call)

2. The signal strength goes up and down, mostly down. It is very hard to make a call inside a house or even send a text message unless I am close to a window.

3. It randomly complains about the SIM card not being valid and require a reboot or something similar. The same card works excellent in the previous phone.

For the sake of completness, I do not know if it worked before the update as it was updated in new condition. I tried to re-install the software using Itunes but it only deleted a few apps.

I agree with you I have a these problem ı dont call and the sıgnal strenght goes up and down sim card not beiing valid before upgrading to ios 5.01 everthing was running very well

PLease send your problem as i did it its the only way, beacuase this is only a comment and apple dont take that.

https://bugreport.apple.com,  its the only hope to apple do something with this problem, its imposible that we can`t use our iphones, because they didnt do a good software (ios 5.0.1) . They need Steve Jobs for do the things well!!! 

I also upgraded my iphone 4s to 5.0.1. my battery problem is fixed but I cannot make any call...

The status switches between "no service", "searching" or even full signal, but my phone is`nt able to make any call.

When I reboot the phone it is working the first 5 minutes, but then the phone seems to be shutting down itself....

PLEASE APPLE, FIX THIS!!!!

Guys I think we need to start calling Apple Support to inform them about this problem. I have call them and they were shock to hear about my problems. They told me that i would need to take the phone to a apple store as they have never heard this problem before. May be  if a lot of people start informing them of this issue they might then try to do something about it. Apple Support # 1 800 694 7466

I cant take to a apple Store...NO APPLE STORES IN PORTUGAL ....

The problrm is ramdom....sometimes no sim , some times no signal...

APPLE must ha an imediate solution to this ...

Why i moved from may SG2..????