Q: iPhone 4S dropping network and data at random

http://imageupload.org/?d=433DF9D61 Are you having this problem , I think this is the best way to explain my problem. Please check the image

sorry guys, this reply is going to be in turkish but it will not be different from my other replies to this thread, more or less 128 k microsim card advice...

merhabalar ege, "invalid sim" hatası benim de 5.0.1'e geçmeden önce arada sırada karşılaştığım bir hataydı. açıkçası ios 5.0 kullanırken telefonu kapatıp açtıktan sonra problem ortadan kalktığı için göz ardı ediyordum... velhasıl, 5.0.1'i yükledikten sonra telefon kullanılamaz oldu ve bu hata yine arada sırada çımaya başladı, hoş çıkmasa da zaten telefon kullanılamıyordu...

neredeyse herşeyi denedim, telefona kendi üzerinden reset attım, itunes üzerinden reset attım, sim şifresini kaldırdım, eski işletim sistemini yüklemeye çalıştım, kırk takla attım ama bir şey değişmedi...

sonuçta yine burada da yazan bir kaç kişinin tavsiyesi üzerine sim kartımı değiştirmeye karar verdim, benim daha öncedden kullandığım kart, büyük olan nuh-u nebiden kalma ve bu telefonu aldığımda kesilmiş olan sim karttı... pazartesi günü turkcell'den 128 k yeni bir mikrosim aldım ve o gündür en ufak derdim yok, telefon problemsiz çalışıyor, ağa bağlanmakta problem olmadığı için telefon bir şarjla daha uzun da dayanıyor...

her şeyi denediysen ve telefonunda hala problem varsa, benim tavsiyem operatöründen 128 k bir mikrosim alman, benim problemlerimi çözdü...

i have been having the same problem with no service or 5 bars 1 minute and 1 bar the next without moving. I have a 128k sim card and im on 02 network. I also have a iphone 4 and that seems to get better service in the exact same spot.

Contacted Apple today and they are sending me a replacement. As much as a pain as it is to replace the phone I can't fault Apple on their customer service as it was a no questions asked replacement!! Although it would have been nice had they acknowledged the fact that it is a common problem amongst the phone!!

Will post once new phone has arrived (approximately 7 working days!)

I contacted Apple this monday, explained our problem, asked if they had heard about it or had read the threads in Apple Support Communities – no they had not, but they were seemingly not surprised – and, according to their customer politics – it is Apples task to solve your problems with Apple products – they offered to send a new phone, without asking. Very, very nice conversation and very courteous, I am happy to say they are masters of customer service! The newphone arrived today!! I set it up, and – no I did not update to iOS 5.0.1 – have no problems whatsoever with missed phone calls or missed network. I am happily waiting for iOS 5.0.2 which is supposedly around the corner.

Hi Everyone!

I got a new micro SIM 32K from my carrier today and it did the job on my 4S. It has been approximately 8 - 10hrs and no call drops, no failed sent messages no nothing. Crystal clear call quality and simply perfect.

The problem is definitely in the new iOS5.0.1. Apple really have put us in great discomfort but again there is always a way round it. Will keep you updated of any further issues - if any but hope not - arise from my 4S.

Regards

asked if they had heard about it or had read the threads in Apple Support Communities – no they had not

This words are really scared me.Does it mean that Apple doesnt know this problem and they might not fix it in 5.0.2.

My phone is totally useless at the momen.I lost signal many times, I get invalid sim error many times.I need to check my screen every 10mins to see error and to restart phone which is so boring for me

You make me upset Apple

Update on my situation: I took my phone in tonight with full intent to exchange it for an HTC Android phone of the same caliber. The guy said I should try to fully restore it. Seeing all of these guys with no success doing exactly this, I didn't try it because it is a pain and I had stuff from 3 years ago on my phone that I didn't want to lose. Being that I had prepared to just throw in the towel and trade it in, I said sure, go ahead. So he does it and a few minutes later, hands me back a phone that works...luckily I got my contacts and some stuff back from iCloud. My phone has been working normally for the past 4 hours, for the first time in nearly 4 days. I'll see if my wifi problem is cured when I get to work tomorrow too, but so far everything is good! Honestly, I'm kinda glad I didn't have to get rid of it. After seeing the HTC phones in person, I was going to be sad to say bye to my iPhone. Let's just hope it's fixed, I'll update ASAP. The thing has been an absolute nightmare for the last 4 days, almost like it had a virus...but I got a new sim card 2 days ago, had at&t reprovision my account earlier today, and did a complete reset tonight and now all seems well. Good luck to you guys!

Hi, so you completely restored your iPhone and it worked ?

well i tried to disable the pin also, but it works only for a while and then it starts all over:/

Hey guys, I sent my iphone last week, and yesterday I got a new one.

It works great, so far it has not dropped even once.

So my suggestion to u all, GET A REPLACEMENT!!

you might have to wait for who knows how long until Apple comes out with a fix.

Until then, good luck to you all!

My 4S still has dropping data connection problems with iOS 5.0.1. It just happened this morning when I went from home to work. I had to enable Flight Mode and disable it after a few seconds, then data connection worked again.

I had quite big problems concerned to two brand new iPhone 4s. BIG problems. I've tried evrything, stayed in touch with Tele2 in Norway, and also had a couple of phone calls to the Apple support. This morning it seems we have solved my problem. The helpful Apple support man helped me, and resently it seems to work quite good. Shortly: I could not send and receive messages, and the connection failed.

We started with iTunes, made a brand new installation. And we did NOT restore from our security copy. He mentoned it probably was sone bugs when we update to 5.0.1. He could not tell me what bugs it was, but I had to syncronice all the parts, one by one. Contacts, e-mail, music, adress book, bookmarks and so on. I did, tried the phone, sent Messages between all updates.

Before updating anything, I tried all the functionality on the phone, it was just perfect. Then we suddenly knew it was not a hardware problem. The only thing I've not tried yet, is to update the pictures. I'm not quite sure if I will, I probably start from scratch with the pictures. And also the SMS. But I do have a copy on my harddisk.

The support man was quite helpful, but if this will last, I really don't know? Time will show. It looks as it it some bugs when we use our security copy in iTunes.

FreelanceGURU

Just to give an update....I finally bit the bullet today and called Apple. As people no doubt know, Apple's EMEA base in here in Ireland. I did a full restore last night again and set the phone up as new one last time to see would that fix the issue. But alas, no....

I was talking to a very nice customer agent in Apple's Cork HQ who took my details. I explained that I had no problem waiting for 5.0.2 if that would fix this issue. She actually said to me, the last update was meant to have fixed this problem!! Strange......

She then transferred me to a Senior Enginner there who patiently went hough all this woth me and is now arranging to have my phone collected and sent in and I'd imagine I'll get a replacement phone. Hopefully, that will fix this. I did say to him again that I was willing to wait if Apple were going to sort this with another update. He told me the next update would not be for 2 months, maybe more probably. But pobviously he can't be sure on this. He gave me his work email address so I can email him with any queries or discuss this with him if I need to which is cool.

Tip for anyone calling Apple. Be nice...be patient, don't be shouting the odds at them. They will look after you and will sort this.

Hello Guys,

I have been posted, that had the same issue with GSM signal (no calls and SMS available).

I have contacted my carrier TELE2 and they have confirmed, that my pre-payment sim-card is not valid for iPhone for 4S.

I have decided to claim Apple and asked for replacement - now it`s working PERFECTLY.

My iPhone was bought in London, but I have got replacement in Lithuania (4S still not in sale here).

New iPhone 4S does not have any issue with GSM Signal - it has better GSM reception than wife`s iPhone 4.

Pre-payment sim-card is working perfectly - I will inform later Carrier, they do not know about it yet.

iDeal (Apple distibutor in Lithuania) has confirmed that they will replace phones during 12 months - if you face troubles. (does not matter is it 14 days or 4-10 months after sale)

Go and take replacement, Apple is doing good service after 40 hours, they have prepared NEW iPhone 4S.

I am still with Apple and like it