Previous 1 3 4 5 6 7 Next 137 Replies Latest reply: Mar 28, 2014 11:27 AM by 360Brochures Go to original post
  • cflowers81 Level 1 Level 1
    You don't have an iPhone 4 and you're giving advice on how to fix it?

    facepalm think I'll nip over to a helicopter pilot forum and give advice on flying, I don't fly though.

    That is not the fix. Read the topic. It's hardware fault. Loads have now had there iPhone 4 swapped and the problem has mahlgically gone. Those who tried new sims still had the problem.

    On top of that, this is poor advice. Bend the sim!? Have you seen the size of a microsim!? It's mostly circuitry, I would not risk bending it.

    Message was edited by: cflowers81
  • SoapyWetDish Level 1 Level 1
    for me this issue seems to manifest itself after a loss of signal, I'm hoping the software fix that is allegedly coming soon will have the knock on effect of sorting it out, its a pain in the arse at the moment.

    Has anyone emailed SJ about it to get a definitive answer on whether its a hardware issue or not ? I think if we had a copy of an email from the man himself in hand when entering an apple store then those that keep getting the runaround by ill informed "genii" would be sorted out (be given a replacement) a great deal quicker...

    Message was edited by: SoapyWetDish
  • RileysG Level 1 Level 1
    Had my sim replaced yesterday. Seems to be better but just just got the sim missing message. Hope they get this fixed soon. I traded up from the original model and am enjoying the speed and the gps.
  • William Cochran Level 1 Level 1
    Add me to the list of "No Sim" sufferers. Had my i4 delivered on the 23rd. Had no issues (other than the "touch of death" signal loss). Thing is, we don't have 3G coverage in North Alabama, but when I arrived in Birmingham today, I got 3G...and then BAM! NO SIM.

    Reset the network/radio and it worked. For an hour. Then "NO SIM" again. Got on the phone with Apple tech and he suggested I remove/reinstall the sim. I did it, and he said "please hold". Then I was disconnected. Grrrrrrrr.

    I am going to contact them again and request a replacement. I have been pretty disappointed in my 4 experience. Great potential, sorry implementation.
  • cflowers81 Level 1 Level 1
    Guys, seriously, get a Genius Bar appointment and get your iPhone 4 replaced. It has not happened to me since I had it replaced.
  • Patrick Young3 Level 1 Level 1
    So I had a genius appointment but figured I might as well stop at AT&T and get a new SIM card before then. Even since I got e new SIM I haven't had the problem. It's been two days and the longest it went before without a problem was a few hours. So maybe in this case it was the SIM, we'll see.
  • Aguaman Level 1 Level 1
    Add me to the list. I received my phone via FedEx on June 23rd. Activated with iTunes, restored from a previous iPhone 3G backup (the 3G was updated to iOS4 prior), and it has been working flawlessly for 3 days (except for the common hand on the antenna interfering with the signal strength problem). On the 26th I went to visit friends in Somis, CA... VERY low signal there... no 3G bars and only Edge network out there. That's normal. What's not normal is that an hour later I started getting these error messages: no sim card installed, invalid sim card, no sim... and it's been happening ever since. Sometimes putting the iphone into airplane mode and taking it out fixes the problem, most times not... same with turning off the iphone. Out there in Somis, however, the problem would not stay fixed for more than 2 minutes.

    I just plugged it into iTunes, and it seemed to be fixed, then it went all "no sim" again (didn't even touch it... it's been just sitting on the desk since I plugged it in). I'll be taking it into an Apple store tomorrow I guess.... what a pain... And now it's rumored that Apple is going to come out with a software fix for the bad reception problem??? Hate to say it, but this new iPhone is feeling a little "Microsofty" to me...
  • aandersonn Level 1 Level 1
  • ordeologyuk Level 1 Level 1
    Orange are now sending out replacement sims to its iPhone 4 customers with this problem... Mine arrives tomorrow hope it will sort it out.
  • cflowers81 Level 1 Level 1
    Interesting. Let us know if it works for you. Really odd this one, as it seems the problem has two resolutions. Replacement SIM or replacement iPhone.
  • asandwich Level 1 Level 1
    I have been running into the same problem. Got a replacement sim card yesterday, and it lasted ~8 hours until I got the same "No sim card Installed" error. I'm setting up an appointment to get a replacement phone this afternoon. Hope that fixes the problem. Other than that I love the phone!!
  • george@scotia Level 1 Level 1
    Had the same Problem with the Sim. Returned to the dealer who replaced it. Seems ok now.
  • jcr6 Level 1 Level 1
    I've got this problem, too, and have spent some time on the phone with AT&T.

    I see three basic possibilities:

    1) Some SIM cards are slightly loose, and jostling the phone is enough to break or make a contact.

    2) There is oxidation on the surface of the SIM card (or the contacts inside the phone) causing the contact to be intermittent. (effectively acting like a resistor)

    3) Software problem.

    My first thought, being a programmer/engineer from the 80's was #2. So I used a pencil eraser on the contacts on the micro-SIM, cycled the phone, and all seemed well. We'll have to see for how long. This would explain why HANDLING the phone to flip into airplane mode, cycling the power on it, or my trick of popping it in/out about 5 times all worked for awhile...

    AT&T is shipping to me a new micro-SIM, suggesting that the problem is #1, but their tech-support database (such as it is) didn't have any explanation to this end. If the replacement micro-SIM works, I would lean more toward #1 as the problem. My second attempt at a fix would have been a small piece of tape on the backside to make the card thicker and provide greater pressure against the leads inside the phone. If the manufacturing tolerances of the micro-SIM aren't as good as the tray in the iPhone 4, then the added pressure will prevent the card from sliding around.

    re #3: A software bug would probably be more widespread than we've been seeing. And would probably cause the symptom to disappear upon a restore to original iOS 4.0 firmware. (until downloaded software is reinstalled). I think this is unlikely, but possible.

    Apple's eventual solution will probably be software -- either lower the electrical threshold, or some kind of debounce on the electrical detection so they can read it even in the presence of #1 and #2.


    So, until you actually get a replacement from your phone carrier, I'd suggest:
    a) vigorously use a pencil eraser on the contacts on the SIM
    b) put a thin piece of scotch tape on the backside (not the contact side!) of the micro-SIM.

    See if that makes any difference.

    Good luck, all.
  • stvelucky Level 1 Level 1
    Mac OS X
    Those are all good but what about the obvious 4th alternative which is a defective phone? My SIM isn't loose, and it's brand new so there's no oxidization. Plus, I've swapped the SIM and it didn't help at all. None of this rules out a software issue, but it doesn't rule out a hardware issue either. Personally that's what I'm leaning towards.
  • halt00 Level 1 Level 1
    Just an update, I had the No Sim Card issue twice. The second time I removed and re-inserted the Sim card and have not had the issue since. This was 4 days ago now.
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