Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

iPhone 4S is loosing connection with Carrier after iOS5 update

Hello,


I've yesterday update iOS 5.0.1. I did it directly in phone without iTunes.


Today I've recognized a issue - my iPhone is loosing connection with Carrier.


I bought phone directly from Apple and using it in T-Mobile Czech republic network.

The status bar show only Search... or No Service


I'm in area where others have good signal including 3G. Also my iPhone 3GS and iPhone 4S before upgrade works well.



I have to switch off the phone (5sec. push of sleep button) and start again to find Carrier.

The switch to Plane mode and back doesn't work.

Manual choice of carrier doesn't work even I can see and choice T-Mobile - still no service



I need to revert iOS update to be able to use my phone. Please help me with this.



Thanks

Best Regards

Jirka

iPhone 4S, iOS 5.0.1

Posted on Nov 11, 2011 3:02 AM

Reply
164 replies

Nov 13, 2011 2:52 PM in response to José Camillo

Entao, o meu funciona normal com o micro sim da vivo e da tim do meu pai, ja com o meu o problema persiste, oque pra mim deve ser problema do chip ser antigo e cortado... Mas o meu ainda nao funciona, amanha vou pedir um chip novo na tim pq o meu realmente esta precisando..., em todo caso, como disseram, deve chegar algum update, nem que seja so nas configs da operadora.

Nov 13, 2011 10:12 PM in response to arturoaearq

Hola Arturo soy Carlos tambien de México pero del Df estoy con telcel me paso lo mismo despues de actualizar el iOS 5.0.1 no recibía ni podía llamar mismos mensajes de búsqueda se señal cero señal sin servicio etc etc ve con tu compañía pide cambio de chip el mio tenia aprox 1 año y fallo en fin cambialo yo este sábado lo cambie y ya no tengo ningún problema, en verdad cambialo pero pide que sea chip reciente o menos de 2 meses de elaborado.

suerte

Nov 14, 2011 2:37 AM in response to Jirka Mraz

Exact Same Issue:


Factory Unlocked Iphone 4S 64 GB, has entirely given up the ghost after the firmware update. Keeps coming up with NO SIM / Invalid SIM and SEARCHING. All after IOS 5.01 upgrade. There I was thinkign the battery life was just an issue and now im faced with a dud handset. This is getting ridiculous ! Even tried my wifes Iphone 4 SIM and still got the same error utter nonsense. Why on earth would you release an update that potentially nukes the phone ?

Nov 14, 2011 2:46 AM in response to Jirka Mraz

Here in Czech Republic is a real mess!!!! I've already changed twice the sim cart of t-mobile but nothing changed. I can't call and I can'T receive a phone call. THIS IS A SHAME APPLE!!!!!. You can't make pay 14500 czk a phone and it doesn't work, and moreover t-mobile is your partner everywhere. Besides here in czech republic there is no phone number for a support of repairing the iphone. I want my money back. I'm incredibly angry

Nov 14, 2011 10:44 AM in response to Jirka Mraz

I had the same problem, but i read sowewhere that the microsim in the 4s is more critical.

My sim was a normal sim, cutted by hand.

This worked over a year fine with my iPhone 4.

And the first week with my 4s also no problems.

Since 5.0.1 it didnt work anymore.

Totday i went to the Telfort shop (the Netherlands)

And there i got à new real micro-sim.


After it was activated (10 min) i had NO PROBLEMS anymore....


How hapiness could be so simple... ;)

iPhone 4S is loosing connection with Carrier after iOS5 update

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.