Daily SIM Failure Error - iPhone 4S

Hi Folks
I have an iPhone 4S which is suffering from a daily error.
Without faily every day at some point I'm getting "SIM Failure".
I have to shut the phone down and restart before I can use again.
Any help much appreciated.

I have now replaced the SIM :-) seems ok so far after first 24 hours - which is a record time for it to go without having the error.

Similar Messages

  • Receiving error message "Sim Failure"  on iPhone 4S now no service.  any advice?

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    hi guys,
    i recently bought a new iphone 4s factory unlocked. in order to avoid sim failures and invalid sim errors or No service errors, Each phone has to be unlocked by connecting it to the Itunes.
    Kindly follow the below steps to avoid any SIM card conflicts
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    - Click Restore install latest version of iTunes on your Pc or Mac or click check for updates
    - Let itunes Backup your phone and then Flash to the Latest Version.
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    - just follow the instructions about activating the Iphone.
    and iphone is unlocked
    NOTE : This is the only FULL LIFE TIME UNLOCK solution for Apple iPhone as the IMEI is registered as UNLOCKED in Apple database.
    This solution should be used ONLY THOSE WHO BOUGHT FACTORY UNLOCKED iPHONE 4S.
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  • SIM Failure

    I am getting a SIM Failure and/or invalid SIM message. I am using the supplied SIM card. This will pop up after I reboot the phone and after a random amount of time after re-seating the SIM card.
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    I'm having a problem with my Iphone 3G that I just received yesterday.
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  • My iPhone continually shows me an Invalid SIM message or SIM Failure.  If I switch my phone off and then back on it works ok for a maximum of 10 mins, and then I get the same message appearing.  How can I resolve it?

    My iPhone 4S keeps on giving me an error message about my SIM Card.  It either tells me invalid SIM or SIM Failure.  The only way i can rectify this it to switch my phone off and then back on again, but this resolve only lasts for 10-15 Mins, and then the same error message appears.  Any ideas on the best way to rectify my alleged SIM card issues?
    Many Thanks

    i Had a simular issue years ago with my blackberry on ATT.  As it turned out, my SIM had some issues.  I would head over to your carrier and get a free sim replacement.   It could be a phone or SW issue, but the Sim is my first guess give my experience

  • Thanks this was very useful.. I have a brand new iphone 4s unlocked version from singapore and I am having the same problem constant network fluctuations, no service, call failed, invalid sim, sim failure, bars fluctuating from 5 - 3 - 2 - 1, no signal/ba

    I have a brand new iphone 4s unlocked version from singapore and I am experiencing constant network fluctuations on my iphone , no service, call failed, invalid sim, sim failure, bars fluctuating from 5 - 3 - 2 - 1, no signal/bars searching etc... Ifeel miserable after trying out all the options changed multiple sims, tried multiple carriers, restored the phone back and have set-up as new device but the problem does not get solved... its is so frustrating that after investing on a world's most expensive phone you cannot enjoy the calling features which the phone offers which is the main thing you own the phone for.. Rest of the things are working.. The funniest part I am not able to make calls or receive calls but can access the internet..  I have tried every possible thing and really very frustrated with this iphone of mine...I hope the problem gets solved.. would anyone have any solutions to this problem.. Does it mean one should never update software as I hear that after updating to IOS.5.1 the problem has started coming and same has been with there.... Apple says its a hardware failure which is very difficult to digest as sometimes I get 5 bars and able to make and receive calls but 95% of the time I am unable to. If anyone has any solution I will be very happy if he or share can share the same. Many thanks. its so disgusting to experience this on top of this apple does not support global warranty for the phone as you need to go to the country from where you bought the phone for replacement.. Truly sad state of affairs.. very very very dissappointing.

    Have a look at this it might help
    http://support.apple.com/kb/TS4148

  • I just got an apple at&t iphone 4 and I have it unlocked. But I want to connect it to t-mobile, so I trimmed my sim card and once the phone was unlocked I inserted the sim and it says no sim, activation error. What can I do to fix this? What is wrong?

    I just got an apple at&t iphone 4 and I have it unlocked. But I want to connect it to t-mobile, so I trimmed my sim card and once the phone was unlocked I inserted the sim and it says no sim, activation error. What can I do to fix this? What is wrong?

    JayleneC wrote:
    Wait.. Everything on iTunes worked, but when I insert my sim it brings me to the start were I have to choose my language, etc... Then it says activation error.. Are you sure it's the sim card?
    As you addressed me that is exactly what I said
    Dodgy trimming ??   get a new micro sim from T-Mobile

  • Heey i bought an iphone 3gs about 2-3 months ago (used) today i blanked off the phone itself and then tried to get the newest update cuz i wasnt able to before so i did and now im locked out and it says sim failure invalid sim i can even get into it :(

    heey i bought an iphone 3gs about 2-3 months ago (used) was in mint condition well taken care of not even a scratch as soon as i got home i tried syncing it to my computer but didnt work it didnt even sync or notice my iphone software .. so i went to my friends and synced it there it has been working for music but videos wont work? but i didnt care  and then the pop up that says update so we would click it wait and it wouldnt work ever since ive had it so i left it like that so i went to my friend today i blanked it off the phone itself and then tried to get the newest update cuz i wasnt able to before so i did and now im locked out and it says sim failure invalid sim i can even get into it PLEASE HELP and cant get a new sim at the moment or take it into the apple store because i live about an hour and a half away from the city and rarley go to it please help me !!!!!!!!!!!!!!

    When I use find file http://www.macupdate.com/app/mac/30073/find-file (which does tend to find files that "Finder" can't), it's not coming up with any other itunes library files that have been modified in the past week, which I know it would have been - unfortunately, I don't have a very recent backup of the hard drive.  It would be a few months old so it wouldn't have the complete library on it....any ideas?  I'm wondering if restarting the computer might help but have been afraid to do so in case it would make it harder to recover anything...I was looking at this thread https://discussions.apple.com/thread/4211589?start=0&tstart=0 in the hopes that it might have a helpful suggestion but it's definitely a different scenario.

  • My iPhone just said "SIM failure" and now says Invalid SIM in the upper corner. What's this all about?

    My iPhone just said "SIM failure" and now says Invalid SIM in the upper corner. What's this all about?  Any ideas on how to resolve this.

    Looks like the Sim card had a catastrophic failure. Burnout, short somethng like that.
    You can try to take out the tray and reseat the sim card inside and see if that gets it back.
    Also try resetting the phone at least once by holding down the home and power buttons until the Apple Logo shows up.
    If none of this works you'll have to contact your cell carrier to get a new sim card, as it probably fried and is no longer functional.

  • IPhone 4s and Sim failure and No service issue

    Ok,
    Few days back I asekd questions regarding few other issues with iPhone 4s. here is it, https://discussions.apple.com/message/17068754#17068754
    Few gentlemen told me, to replace sim card. Here is what I did,
    1) I am from India. I was using Vodafone 3g micro sim. Everyday, 4-5 times in the ideal mode I got messages like Sim failure and invalid sim. I have to restart my iPhone everytime. Then only it was working.
    2) I posted the question, people said its my card problem
    3) I bought new BSNL 3G micro sim card for iPhone. I inserted the card and got 3G working.
    4) After 3 hours, I saw No service message. I waited for some time, i went to outside to see if it was a network issue. Nothing changed.
    5) I rebooted my iPhone, it immediaetly picked the network.
    6) After few hours, again it lost and said no service.
    7) I then didn't rebooted it.
    8) In the morning,  I saw Sim Failure and invalid sim message. Useless
    9) I now rebooted and Sim is working with 3G network.
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    is this iPhone issue? It is for sure. I am tired now. Battery is dying and with this Sim Failure and No service, I am totally disappointed.

    Hi Ahelpyguy...
    I read all your messages above , I am facing the same problem as u faced.
    My Iphone 4S and it was working fine (5.0) until i upgrade to 5.0.1(9A406).
    Now I am facing alot of network issues.  I get messages liek NO Sim , SIM FAILURE. 
    I even restored the sowftware from ITUNES but i am still facing the same problem.
    I was using Vodafone first but I heard that due to problem in micro sim reader of Iphone 4s i shd use a 128 K or 64 K sim.. Since only Airtel provided 64K sim ...I installed that in my phone. But still i am facing the same issue.
    I would appreciate if you can tell me whats Tweaked version of 5.0.1.
    the current software installed on my phone is 5.0.1 (9A406).
    Thanks
    Prateek

  • Have tried to restore settings due to problems, now Iphone shows Sim Failure, how can I get back to using my phone? Please help, its a business phone. :(

    Hi, I have tried to restore settings on my Iphone due to problems I was having with the phone cutting out when talking on the phone, now Iphone shows Sim Failure, how can I get back to using my phone? Please help, its a business phone.

    Hi jclarke64, 
    Thank you for contributing to the Apple Support Communities. 
    I'm sorry to hear that your iPhone 4s was lost, and glad that you were able to upgrade. 
    If your iPhone 4s was backed up to iCloud or using iTunes, you can restore the backed up data to your new phone. 
    See the steps in this article for help with restoring from a backup:
    Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes - Apple Support
    All the best,
    Jeremy 

  • HT4528 IPHONE 5 gets the message "invalid sim" and "sim failure" - how do I fix this?

    I keep getting the message: "sim failure" or "invalid sim". I have a not changed anything on the phone other that adding the recent update. How do I fix this?

    If  that doesn't work, you can just take out the sim and put it back in. To take it out, you put a paperclip into the small hole on the right side of you iphone. Press it in and the sim will eject. Then just press it back in once removed. Hope this helps.

  • On my new iPhone 4S, I periodically get a "Sim failure" message and I loose my Verizon connection. To get service back I need to shut down the phone and start it up again.

    On my new iPhone 4s, I periodically get a "Sim failure" message and I loose my Verizon connection. To get service back, I need to shut down my phone and restart it.

    Have you tried removing and replacing the SIM? If that doesn't work, try a new SIM from Verizon, they will usually swap them out for you for free. If those don't work, you might need to get the phone checked out, it may have a bad SIM port.

  • The SIM card In my iPhone 5 has been giving me occasional messages that there has been a SIM Failure, there is NO SIM, or that there is an INVALID SIM.  Until today, I was able to restart it with no problem and the SIM card would start up.

    The SIM card In my iPhone 5 has been giving me occasional messages that there has been a SIM Failure, there is NO SIM, or that there is an INVALID SIM.  Until today, I was able to restart it with no problem and the SIM card would start up.  This afternoon the NO SIM message came up and I cannot fix it. What is my next step?  I am traveling in Canada now and it is not convenient to come back to the States just to get a SIM card.
    Thanks,
    Lou

    Hi,
    Thanks for getting back to me.  How can I initiate Verizon sending me a new SIM card?  I will be here  long enough to receive it if they can send it to me.
    I have been trying to call Verizon Wireless, but they won’t take my call from my Skype account and I don’t have my phone.
    Thanks again,
    Lou

  • Just updated my iphone 4s and now my phone says sim failure

    I just updated my iphone 4s to ios 6.1.3 and then a message came up saying 'sim failure' and it said 'invalid sim' where my carrier name should have been at the top. I turned it off and on again to try to fix this but now it just says searching where my carriers name should be.Now it wont let me send texts or phone anyone because it says my number is unknown.
    Does anyone know how to fix this without having to get a new sim card?
    Thanks

    Remove and re-insert the SIM.
    If the problem continues, replace the SIM.

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