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 Benpalmason,

    Benpalmason Benpalmason Nov 12, 2011 6:12 AM in response to rubeschinsky
    Level 1 (0 points)
    Nov 12, 2011 6:12 AM in response to rubeschinsky

    Rubeschinsky: Can you check if your phones have the same Model nr. and Modem Firmware ?

    Mine was working quite well the first days but the battery was bad.  Now the battery is even worse and on top of that I have "no service" most of the time..

    So far, everyone has said they have modem firmware 1.0.13...

  • by TJroksta,

    TJroksta TJroksta Nov 12, 2011 6:13 AM in response to Stuart Mchattie
    Level 1 (15 points)
    Nov 12, 2011 6:13 AM in response to Stuart Mchattie

    yea i have been having the same problem even though I dont have a sim pin. iPhone 4s is great and all but its been disappointing me ALOT!

  • by rubeschinsky,

    rubeschinsky rubeschinsky Nov 12, 2011 6:24 AM in response to Benpalmason
    Level 1 (0 points)
    Nov 12, 2011 6:24 AM in response to Benpalmason

    strange !

  • by rubeschinsky,

    rubeschinsky rubeschinsky Nov 12, 2011 6:27 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 6:27 AM in response to Stuart Mchattie

    32GB has a Model number MD245FB Firmware is 1.0.13   working fine except battery drain

    16GB has Model number MD239FB Firmware is also 1.0.13

     

    I want to add that disabling the SIM pincode did not change anything !

  • by Benpalmason,

    Benpalmason Benpalmason Nov 12, 2011 6:26 AM in response to rubeschinsky
    Level 1 (0 points)
    Nov 12, 2011 6:26 AM in response to rubeschinsky

    @rubeschinsky:  mine is 32GB and exactly same model nr, firmware and GSM operator as you...  so the problem seems to be completely random...

  • by Sylvie Habel,

    Sylvie Habel Sylvie Habel Nov 12, 2011 6:42 AM in response to cjbiom
    Level 1 (5 points)
    Nov 12, 2011 6:42 AM in response to cjbiom

    I had the same issue in Montreal, Canada and got it exchanged after 24 hours. They new one is working perfectly and hasn't dropped the signal once.

  • by Ithgillis,

    Ithgillis Ithgillis Nov 12, 2011 7:01 AM in response to Benpalmason
    Level 1 (0 points)
    Nov 12, 2011 7:01 AM in response to Benpalmason

    Model Number: MD235B (4S, 16GB, Black)

    Modem Firmware: 1.0.13

     

    as i said before, was working fine until the 10th. I don't believe that hardware would fail in this way to cause this problem especially not with so many people at around the same time.

    Frustratingly friends who have the Iphone 4s are all using other networks so we can't swap sims around to test the handsets. Thus far i am the only one in our group to be experiencing these problems.

     

    Spoke with the vendor i bought the phone from today (Carphone Warehouse) and they're washing their hands and telling me to approach Apple direct. very annoying.

  • by cirofromsalerno,

    cirofromsalerno cirofromsalerno Nov 12, 2011 8:23 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 8:23 AM in response to Stuart Mchattie

    same problem

     

    posted here yesterday...

     

    firmware 1.0.1.3

     

    ios5.0.1 = FAIL!!!!!

  • by ed_got,

    ed_got ed_got Nov 12, 2011 8:32 AM in response to panzert4
    Level 1 (0 points)
    Nov 12, 2011 8:32 AM in response to panzert4

    Panzert4,

     

    Tele2 gave me a new phone, which I got this morning. I disabled the sim pin request before putting the sim in the new one. Did the set up as a new phone with the "no pin" sim. Tested for a while, and it worked without any problems.

     

    Reluctantly upgraded to 5.0.1 and it still working!!!

     

    Regards,

    Ed

  • by Kosiak,

    Kosiak Kosiak Nov 12, 2011 9:27 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 9:27 AM in response to Stuart Mchattie

    Hi,

     

    I have bought 4S in London - came back to Lithuania and has exactly the same problems with "Call failling" and "Undelivered SMS at the end".

     

    I have tried to use 2 different GSM carriers - it`s not working, boths are failing.

    Definately, it`s iPhone 4S software bug.

    Model: MD239B, Modem firmware 1.0.13.

     

    I can not use it like a phone at all.

     

    Does anybody know, if I have a chance to replace this iPhone here in Vilnius/Lithuania (it it`s bought in London).

    There are no any AppleStore here. Only some local official dealers of Apple products.

     

    Looking for comments.

     

    /Kosiak

  • by ahmedelghoneimy,

    ahmedelghoneimy ahmedelghoneimy Nov 12, 2011 10:00 AM in response to Stuart Mchattie
    Level 1 (4 points)
    Notebooks
    Nov 12, 2011 10:00 AM in response to Stuart Mchattie

    Hi from Egypt i have the same issue with my network Vodafone Egypt the network bar at 4 then cannot make a call then drop and searching then no coverage my iphone 4s 16GB latest IOS 5.0.1 (9A405) Modem firmware 1.0.13

  • by vZ10,

    vZ10 vZ10 Nov 12, 2011 10:14 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 10:14 AM in response to Stuart Mchattie

    I like my Iphone, but I just can't use it after upgrading. It's just like Ipod with sim card inside.

     

    Apple, do something, please!!!

  • by Dweazer,

    Dweazer Dweazer Nov 12, 2011 10:23 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 10:23 AM in response to Stuart Mchattie

    Apple, please let us downgrade to ios 5 at least!!!!!!!

    Now we all have a phone we can't use.........

  • by PetriFromStockholm,

    PetriFromStockholm PetriFromStockholm Nov 12, 2011 10:36 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Nov 12, 2011 10:36 AM in response to Stuart Mchattie

    I have to say that today I activated "diagnostics- and userdata"  (or what it´s called in english, I use swedish)

    And one of the logs say: "metricsCCBasebandReset {reason: "modem reset: Call state out of sync"

     

    Whatever that means it propably has something to do with me being unable to make calls and use 3G network. And that does happen several times a day. What do you guys think?

     

    Best regards, Petri

  • by Benpalmason,

    Benpalmason Benpalmason Nov 12, 2011 12:33 PM in response to PetriFromStockholm
    Level 1 (0 points)
    Nov 12, 2011 12:33 PM in response to PetriFromStockholm

    I can't even send SMS. With 2-3 bars of signal. Sms fail witg this msg:

    metricsCCBasebandReset {

    reason: "modem reset: ATCS_TIMEOUT on message for svc=5 client=1 (txid=13 msgid=0x20) [SMS Service]"

     

    Evidently a lot of phones have modem/antenna issues. There are also large threads here where ppl talk about 3G dropouts and battery drainage because of it. I've disabled Cellular Data but that does not help me.

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