iPhone5 "NO SIM CARD INSTALLED" "NO SERVICE"

First, calm down. Frustrating to be sure, but we're all users here, just like you.

Have you taken the SIM card out and tried to reseat it?

What happened when you did that?

Some SIM cards are faulty. Have you gone to AT&T and obtained a new SIM card?

These are the steps you need to take.

GalFridayOrganizer wrote:

Why would I even need to fiddle with the SIM card?

Because sometimes they become unseated and you can lose reception. In addition, some SIM cards are just plain faulty.

You can sit there and do nothing if you desire, but your phone isn't going to magically get better. You're going to actually have to take some troubleshooting steps if you want a working phone. First thing would be to re-seat the SIM. Next would be to replace the SIM. If that doesn't work, you'll need to bring your phone into Apple for evaluation.

If you feel uncomfortable with taking the SIM card out yourself and fiddling with it, I suggest you take it to ATT and tell them that you think the SIM card is defective or unseated and have them help you.

Check this out:

https://discussions.apple.com/thread/4327783?tstart=0

I purchased my iPhone 5 last Friday and I started having the same problem start Saturday. I went to best buy(where I purchased the phone) they didn't have any SIM cards for the new iPhone to replace mine. My daughter suggested I take the new cover I had purchased off the phone and see if the problem stopped. Well I've had it off and I haven't had the problem since I did. The cover was really snug on the phone. So maybe it was squeasing the SIM card opening. I don't know if that's what it was but the problem stopped. So if everyone has a cover on their phone take it off and see if the problem stops.

tsvanderpool

Re: iPhone5 "NO SIM CARD INSTALLED" "NO SERVICE"

Sep 24, 2012 8:50 AM (in response to GalFridayOrganizer)

I purchased my iPhone 5 last Friday and I started having the same problem start Saturday. I went to best buy(where I purchased the phone) they didn't have any SIM cards for the new iPhone to replace mine. My daughter suggested I take the new cover I had purchased off the phone and see if the problem stopped. Well I've had it off and I haven't had the problem since I did. The cover was really snug on the phone. So maybe it was squeasing the SIM card opening. I don't know if that's what it was but the problem stopped. So if everyone has a cover on their phone take it off and see if the problem stops.

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Hey ....there you're not alone. There's a LOT of us with this same issue. It seems to be on the AT&T and Telus/Bell. I'm from Canada and have this problem on the Bell network. It seems to be a problem with LTE switching back to 3G. You can go into the settings app and turn off LTE and that should fix your no service problem till Apple sends us a fix. I hope there's a fix quickly.

I would agree with Steve31 on this as I've noticed that the "NO SERVICE" happens specifically when my phone switches from LTE over to 4G/3G and vice versa. As far as the NO SIM I wouldn't know what to comment on that one as I've yet to have that issue.

I have noticed however that if your currently using your iPhone 5 for internet purposes or talking on the phone it won’t go into a NO SERVICE status until your done using the phone for whatever purpose you are using it for. This is just my personal experience with it and so far have had no major issues with the phone. The time that it takes for the phone to switch from LTE to 4G/3G is all of but 5 seconds and although I'd prefer this not to happen at all I'm not losing sleep over it either.

I've had my iPhone 5 for one week, and just started having this issue today. I called AT&T and they told me to either remove the SIM card or take it to the AT&T store and have them remove it and clean it. The customer service rep also told me no one has called and complained about this issue.

Today I put my sim into my Galaxy s 3 using an adapter to give it a try and also had the "no service" issue till I rebooted. So I am now convinced that this is a Network issue.

I have experienced your frustration last year with this issue. Just a couple tips while trying to sort this out. DON'T exchange the phone for a replacement if you think that you will want to return the phone for a refund in the first 30 days. The "No Service" message started for some iPhone users all the way back in iOS 3. It is seen on a number of carriers across the world, but doesn't affect all users. The problem I saw was automatic switching between 2G and 3G signals. Nothing I was asked to do corrected the problem. I had 4 iPhones, 4 SIM cards, account resets, tower evaluations, countless hrs with Apple restoring my phone, etc. etc. I waited for 3 months of BS before I demanded a refund. That was a whole different story of countless, wasted, hours. You can turn Airplane mode on and then back off to get signal back instead of turning the phone off/on. I hope that your problem gets resolved in a timely manner but I wouldn't hold my breath.

I have the iphone 5 from sprint and Im having the same problem. I have to restart the phone all the time.