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 Mandachuva,

    Mandachuva Mandachuva Dec 15, 2011 6:37 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 15, 2011 6:37 AM in response to Stuart Mchattie

    Update:

     

    My internet 3G still works without the SIM card! The iPhone doesn´t "feel" when I remove it...

     

    Curious is that when a try to remove the another carrier prepaid SIM, I just receive a popup message "NO SIM CARD INSTALLED".

  • by michal.kos,

    michal.kos michal.kos Dec 15, 2011 10:37 PM in response to Mandachuva
    Level 1 (0 points)
    Dec 15, 2011 10:37 PM in response to Mandachuva

    For all of you:

    http://support.apple.com/kb/TS4148

  • by MuGeN PoWeR,

    MuGeN PoWeR MuGeN PoWeR Dec 15, 2011 10:54 PM in response to michal.kos
    Level 1 (0 points)
    Dec 15, 2011 10:54 PM in response to michal.kos

    i have restored mine lets see what happens!!

     

     

    update: same thing happens! i m unable to send the Text msgs and make a call! it fails and then it starts searching!!

  • by k@kg,

    k@kg k@kg Dec 15, 2011 11:05 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 15, 2011 11:05 PM in response to Stuart Mchattie

    happening here in florida, as well. i  bought iphone 4s - arrived a few days ago. paid full price for unlocked from apple so i could continue with tmobile. the phone didnt arrive with a sim card. had to get mini sim from TM.

     

    regardless of APN settings added, wifi on and off, data roaming on and off, airport , all power on and off. none are guarenteed fixes on my phone nor is the connection consistent. Tmoobile says it must be off the 3g network and isnt compatible with 4g... in order to get a service connection by turning wifi off i can link randomly with the 2g. although that drops and goes to no service as often as well.

     

    why did i buy a iphone 4s with cloud when im expected to disable wifi, inet and use 2g ?....because neither tmobile nor apple mentioned or were aware of the extent of thier conflicts..?? by the way, i love the phone and really respect the help tmobile tried to give ...apple to.

     

    i went to verizon tonight, a supported carrier to change my service. they were unable to turn off 3g, (tmobiles complaint) and unable to find verizon towers to be recognized. we couldnt get the phone past the reset. it searched and only found att. verizon removes  the sim and in past cases, he said, places the phone in correct network. (att sim triggers the GMCA network)

     

    apple tech tried to help and all my supports were eager to go home. is thiis phone a lemon or have a glitch and is permanently 'unlocked'? or unlocked but unwilling to regognize anything but the GmCA network?

     

    When the phone leaves the factory.... settings, are they different for ATT vs. Verizon? i thought i was getting the freedom to choose or change service providers?

     

    how do i get a new unlocked apple phone that wont lock on any signal ...commit to the GSM ? does this limit me for updates in the future?

     

    unlocking the sim pin would be helpful especially in europe where there are no conflicting networks vying for signal strength in the same yard....

     

    does anyone have a verizon 4s and know if they have updated APN settings?

     

    My options are return the phone and re-order spacific to which carrier but with the holidays that means wait another ? 3 weeks for phone? Apple suggested a blank sim which ill track down in am. its frustrating.

  • by k@kg,

    k@kg k@kg Dec 15, 2011 11:13 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 15, 2011 11:13 PM in response to Stuart Mchattie

    For all of you:

    http://support.apple.com/kb/TS4148

     

    im doing that restore now. i did it with apple tech last night but the updates are different then what we encountered. thanks michal.kos

     

    ill do the ipad2 next ...maybe without the sim card in i can go straight to verizon in am. (i still think this is a network carrier conflict issue but any updates are helpful!)

  • by DANIEL FROM SWEDEN,

    DANIEL FROM SWEDEN DANIEL FROM SWEDEN Dec 16, 2011 12:02 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 16, 2011 12:02 AM in response to Stuart Mchattie

    Tele2 send me a new simcard 4g compatible and it works!

    Finally i can use My phone..

  • by MuGeN PoWeR,

    MuGeN PoWeR MuGeN PoWeR Dec 16, 2011 1:36 AM in response to DANIEL FROM SWEDEN
    Level 1 (0 points)
    Dec 16, 2011 1:36 AM in response to DANIEL FROM SWEDEN

    somehow i think that this issue is related to the sim card!

  • by N19h7m4r3,

    N19h7m4r3 N19h7m4r3 Dec 16, 2011 2:58 AM in response to DANIEL FROM SWEDEN
    Level 1 (0 points)
    Dec 16, 2011 2:58 AM in response to DANIEL FROM SWEDEN

    Let us know if that really did fix it.

     

    If that really is a solution, well that means people in Ireland are out of luck. We don't have 4G, LTE or any of those flavours.

     

    With max 3G I get about 3Mbps.

  • by jose geraldo,

    jose geraldo jose geraldo Dec 16, 2011 4:55 AM in response to N19h7m4r3
    Level 1 (0 points)
    Dec 16, 2011 4:55 AM in response to N19h7m4r3

    This update, released from Apple yesterday, solve the problem.

     

    Remember to reset you’re the network after the update.

     

    http://www.mactrast.com/2011/12/apple-releases-minor-ios-5-0-1-update-for-iphone -4s/

  • by Andy_KZ,

    Andy_KZ Andy_KZ Dec 16, 2011 5:04 AM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 16, 2011 5:04 AM in response to Stuart Mchattie

    this UPDATE did not help!  SAME AS BEFORE after making one call, I can not make second, it says call failed then goes to searching! When if find carrier, again I can make ONE call, then call failed again!!! I am P I S S E D O F F with apple.

  • by Andrei Domnit,

    Andrei Domnit Andrei Domnit Dec 16, 2011 10:06 PM in response to Stuart Mchattie
    Level 1 (0 points)
    Dec 16, 2011 10:06 PM in response to Stuart Mchattie

    The update worked for me!!

  • by xpriens,

    xpriens xpriens Dec 17, 2011 10:11 PM in response to Andrei Domnit
    Level 1 (0 points)
    Dec 17, 2011 10:11 PM in response to Andrei Domnit

    The update worked for me. Just updated yesterday night. Now, all my SIM's are working great. Been just 4 hours, and no network search or failure. Will update after 2-3 days of extensive use. But it's still better than it was before. Initially, none of my India SIM's worked for more than 1 hour. Made 1 call and it failed to make the second one. Now, had already made 3-4 calls continuously, received calls and sent/received messages. Happy to see, Apple acknowledged the issue and gave a fix.

     

    Hope, it works for everyone . Cheers!!!

  • by spielothek,

    spielothek spielothek Dec 18, 2011 2:19 AM in response to xpriens
    Level 1 (10 points)
    Dec 18, 2011 2:19 AM in response to xpriens

    I had the same problem for a long time. But Apple has published a tweaked update for it. Try this link:

     

    http://support.apple.com/kb/TS4148

     

    So far, it seems to have worked for me, too. (o2 - Germany) It is worth giving it a try!

  • by MuGeN PoWeR,

    MuGeN PoWeR MuGeN PoWeR Dec 18, 2011 5:40 AM in response to spielothek
    Level 1 (0 points)
    Dec 18, 2011 5:40 AM in response to spielothek

    i downgraded mine to 5.0.1 (9A405) and my baseband has been downgraded as wel!! the  5.0.1 (9A406) didnt help me in any way:/

  • by unicohijo86,

    unicohijo86 unicohijo86 Dec 18, 2011 11:50 PM in response to Stuart Mchattie
    Level 2 (255 points)
    Dec 18, 2011 11:50 PM in response to Stuart Mchattie

    same problem for me. The 3G network works fine but the cellular signal used for sending/receiving SMSs and calls go from full bar to "Searching..." to "No Service" randomly. I just got my iPhone 4s last Dec 17, 2011, a day after 4S was released here in the Philippines.

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