Stuart Mchattie
Level 1 (25 points)

Q: iPhone 4S dropping network and data at random

Hi,

 

I've been using an iPhone 4 on a Vodafone contract for the past 16 month and just bought an iPhone 4S direct from Apple. It arrived on Friday morning and I got it set up correctly as far as I can tell.

 

When I first turn it on, it works lovely and exactly as I would expect, able to make calls, send texts and access the internet via the cellular network. However, at what appears to be random, the network will disappear (no bars of signal) stopping me making calls and texts, but still allowing me to access the internet.  Sometimes, the Internet goes, but I can still make calls and texts.  Other times, everything is gone and I get "No Signal" where it normally says Vodafone UK.

 

So when trying to fix this problem after it's noticed, I try putting it into Airplane mode and back out.  The phone scans for a network and goes back to the same state as before I tried this fix. I have tried resetting network settings, but this doesn't change anything. The only thing that actually fixes it temporarily is turning the phone right off and back on again.

 

At this stage I assume this is a bug with the software, but I wondered if anyone else is experiencing anything like this? If no one is, I will take it up with Apple, but I don't really want to do that as I love the new phone so much!!

 

Cheers, Stuart

iMac (late 2009), Mac OS X (10.6.3), 27" i7 Quad-Core, 4GB RAM, 1TB HDD

Posted on Oct 16, 2011 2:53 AM

by L2C2002,Solvedanswer
L2C2002 L2C2002
Level 1 (10 points)
A:

Same issue here in Germany with T-Mobile.

The only way to overcome this is to disable the SIM PIN.

Not a real solution but that solves the issues for now.

Cheers

Posted on Oct 16, 2011 4:02 AM

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Stuart Mchattie

Q: iPhone 4S dropping network and data at random

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  • by CorkLad910,

    CorkLad910 CorkLad910 Nov 15, 2011 4:32 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 4:32 PM in response to Stuart Mchattie

    Another Irish user with this problem! Have tried all solutions mentioned on this thread and still the same problem. Wondering if it might have anything to do with me changing my sim password? Although i have disabled the sim password since. Either way Apple are getting a phone call first thing in the morning!! I suggest everyone else does the same so they know how many are affected by this!

  • by Frenchieman,

    Frenchieman Frenchieman Nov 15, 2011 5:31 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 5:31 PM in response to Stuart Mchattie

    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....

  • by Iphone BD,

    Iphone BD Iphone BD Nov 15, 2011 7:32 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 7:32 PM in response to Stuart Mchattie

    Hi I am from Bangladesh.. i am having the same problem after i updated to ios 5.0.1.. Cant send any txt and call... its pisssing me off.. cant even contact apple properly.. they have all the wierd rules..

  • by roidupetrol,

    roidupetrol roidupetrol Nov 15, 2011 10:23 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 10:23 PM in response to Stuart Mchattie

    Same issue here, it makes the phone unusable, will call the service center (I have 3 phones with the same issue)

    it was fine with the 4

  • by tngrl07,

    tngrl07 tngrl07 Nov 15, 2011 10:56 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 10:56 PM in response to Stuart Mchattie

    having same issue in US. Waaaay worse signal than I had before.

  • by Sashi,

    Sashi Sashi Nov 15, 2011 11:22 PM in response to tngrl07
    Level 1 (10 points)
    Nov 15, 2011 11:22 PM in response to tngrl07

    Me too in Sri Lanka

  • by IRock_,

    IRock_ IRock_ Nov 15, 2011 11:53 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 15, 2011 11:53 PM in response to Stuart Mchattie

    I think I have cracked it. I have read every post and comments and tried and every possible fix. Does not work. I'm using iPhone 4S 16gig bought from Melbourne, use in Cambodia carrier Mobitel.

     

    Issue, no signal. 3G come and go. I have to on and off to get back signal sometime aeroplane mode on and off. My iPhone is useless. It was fine on 5.0 problem only exist after I update to 5.0.1.

     

    I tried my GF sim card and everything works fine, signal is full. I switch back to old sim problem come back. Today I went to the carrier and get me a new sim (does not matter 32k or 128k, they only have 32k btw, same sim I used before) And now, its fine. Its been 3 hours now. Normal I have no signal every 15-20 min I have restart and attempt to call someone to get back signal. I think when 5.0.1 was installed, something in the OS messed up the sim card. However that sim card still works fine on iPhone 4/3GS and other phone.

     

    I know some people have tried this and still have that issue. I know your frustration. If issue still persist, keep trying different sim cards. You will see the different. I hope it works for you. Now for me I am inclined to not update software without prior research on forums.

     

    iPhone 4S from Phnom Penh, Cambodia.

  • by roidupetrol,

    roidupetrol roidupetrol Nov 16, 2011 1:53 AM in response to DJ Hollygrove
    Level 1 (0 points)
    Nov 16, 2011 1:53 AM in response to DJ Hollygrove

    Well I have (had the exact same issue)

    I called apple and logged a call.

     

    the responce I got was frustraiting but some what helpfull.

     

    I had an Iphone 4 before my 4s. Apple technical support says that the microsim from the apple 4 isn't compatible with the 4s, they told me that all the providers in europe were told about this before the lunch and they should give out new sims.

     

    Now I explained that I was in Kazakhstan for the moment and wanted to know the differances so I could tell the local providers. They did not have this info but they told me to try with a card that had not been used on any other phone.

    I did this 30 min ago, so far it does work ( the line use to drop every 5-10 min )

    Will post agin if this does not work

  • by ronnie73,

    ronnie73 ronnie73 Nov 16, 2011 2:09 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 16, 2011 2:09 AM in response to Stuart Mchattie

    Still in Lebanon...still wiz z same problem...micro sim changed...reastored network default...restored iPhone...

    No Way, I'm always having network for few seconds and then NO SERVICE....

    I really hope Apple is working on it bcs I can not pay €900 for a iPhone sim free and it doesn't work at all

    I'm very disappointed and MAD!!!!

  • by nesse10,

    nesse10 nesse10 Nov 16, 2011 3:34 AM in response to Rocketman-SWE
    Level 1 (0 points)
    Nov 16, 2011 3:34 AM in response to Rocketman-SWE

    @hejo82

     

    To all swedish readers using Tele2  carrier

     

    Ja har precis varit i kontakt med Iphone supporten på tele2 igen och fick pratat med en vettig tekniker.

    han bad mig skicka länken till honom om detta forum. jag skickade länken till denna tråden och han fann det väldigt intressant. Han ska prata med andra tekniker om det går att lösa ett 64k sim som jag ska få prova som försökskanin, de har fått mitt nr så de kan nå mig direkt i detta ärende. de skulle återkomma under dagen.

    Jag kommer med nytt inlägg så fort jag vet något nytt om ärendet.

  • by Lameth,

    Lameth Lameth Nov 16, 2011 3:46 AM in response to nesse10
    Level 1 (0 points)
    Nov 16, 2011 3:46 AM in response to nesse10

    Hej Nesse10,

     

    I am also using Tele2 sverige with my new Iphone 4s and I also got the problem. I sent this link too to the support of Tele2 sverige through their mailing support service. I hope I will get an answer asap because right now the phone is pretty much useless.

     

    I am also wondering if the battery life problem is not connected to the fact that the phone tries a lot to keep in touch with the network, issuing a lot of requests, which probably use a lot of battery....

     

    Lameth

  • by Noctorial,

    Noctorial Noctorial Nov 16, 2011 4:20 AM in response to Stuart Mchattie
    Level 1 (5 points)
    Nov 16, 2011 4:20 AM in response to Stuart Mchattie

    i think the problem is :

    Cant turn off the 3G

     

    Why? Because i already tested in one location "with low signla" 1 bar for 3G.. After that my bar signal is gone and my iphone is searching for signal.

     

    #Spot signal is the reason why we have this problem :))

    Try to buy new sim with good networking ^^,

  • by seifeddine,

    seifeddine seifeddine Nov 16, 2011 4:30 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 16, 2011 4:30 AM in response to Stuart Mchattie

    same trouble here : after updating to ios 5.0.1 on an iphone 4S  im getting trouble with network  searching all the time and if it get some bar  there is no 3G at all

    i tried : disabling the PIN / reset the software / reset the setting / restart ......................  no solution

    any help please

    have an idea how to return back to IOS 5.0 ???

  • by Rocketman-SWE,

    Rocketman-SWE Rocketman-SWE Nov 16, 2011 4:33 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 16, 2011 4:33 AM in response to Stuart Mchattie

    Me and my friend Sven ordered iPhone 4S at the same time. And we both have Tele2. We both have 5.0.1. His phone is working fine, not mine.

     

    So, I tested the 4 possible combinations:

     

    • Svens SIM in Svens iPhone: Works fine.

    • Svens SIM in my iPhone: Works fine.

    • My SIM in Svens iPhone: Works fine.

    • My SIM in my iPhone: Does not work.

     

    A few differences:

    1. I ordered a new SIM from Tele2 because I did not have a Micro-SIM, and Sven cut his old SIM to fit.

    2. I updated to 5.0.1 from 5.0 with iTunes sync, Sven used the new built in update feature.

    3. I am a developer and used the iOS 5 beta for a while on my old 3GS, before iOS 5 was released, Sven never installed the beta. Though I doubt this has to do with it.

  • by nesse10,

    nesse10 nesse10 Nov 16, 2011 4:44 AM in response to Rocketman-SWE
    Level 1 (0 points)
    Nov 16, 2011 4:44 AM in response to Rocketman-SWE

    I just got my replacement iphone from Apple 30 min ago

    Installed it as a new phone, not back up from my previous and it works fine

    I do not dare to update to 5,0,1

    Later I will restore data from my previous phone wen I get back home from the office

     

    I´ll keep my fingers crossed

     

    PS

    I´m using the 32k sim from Tele2 in Sweden

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