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iPhone 4 Users - Anyone getting "No SIM" message for no apparent reason?

dmk1974

dmk1974

macrumors 68020
Original poster
Sep 16, 2008
2,491
540
I got my iPhone 4 on launch day and it's worked great for me so far. However, just today, I got a "No SIM" message 3 times. I haven't touched the SIM door and the phone has been in a iFrogz Luxe Lean case the whole time so there's no apparent movement at all.

The only thing that crossed my mind was that today does start my new billing cycle with AT&T. Is there any chance that they have some issue with my phone today since I had upgraded from a 3GS? It's a stretch, but I'm trying to figure this out. Makes no sense that it came up three times, but then after a while went away. Bigtime fail if I need the phone in an emergency or something.

Anyone else experience this with their iPhone 4? Thanks!
 
There have been other threads on this issue, your best bet is to search. Have you tried, removing the sim, re seating it and putting it back in?
 
Yes! I get the same thing. The only reason I noticed is because I powered down to go on a flight... and upon arrival my iPhone said NO SIM INSTALLED. That was fun, arriving at a city I had never been to before without my phone working. I had to reset about 6 times and then play with the airplane mode switch... and after a bunch of toggles it finally recognized the sim.


Now this problem happens everytime I power down my phone. Soo annoying, I'll probably go to the local apple store. This really is a nuisance.

Anyone have any fixes for this?
 
Truz21 said:
Yes! I get the same thing. The only reason I noticed is because I powered down to go on a flight... and upon arrival my iPhone said NO SIM INSTALLED. That was fun, arriving at a city I had never been to before without my phone working. I had to reset about 6 times and then play with the airplane mode switch... and after a bunch of toggles it finally recognized the sim.


Now this problem happens everytime I power down my phone. Soo annoying, I'll probably go to the local apple store. This really is a nuisance.

Anyone have any fixes for this?
Click to expand...

Follow this advice. It has worked for others.

RTigay said:
There have been other threads on this issue, your best bet is to search. Have you tried, removing the sim, re seating it and putting it back in?
Click to expand...
 
My 3G has been doing this recently. I just pull it out and put it back in. Hasn't bothered me enough to find a permanent fix for it.
 
I got that message once on the first day while I was syncing my old iPhone's data with it. I took out the itty bitty SIM card and replaced it. That fixed everything. I have no idea who thought the SIM cards used by most phones were too large and needed a micro SIM, but he/she is very foolish.
 
Mine has been bad lately. So I went to Apple today and they exchanged it no questions ask. They didnt even ask for proof. I didnt take screen shots for when it happened.
 
Just got back from the apple store, the genius thought the situation was rather odd. He tried resetting and what not, but then told me he was just going to replace the phone.

The order was placed for the phone since they don't have any in stock, I should be getting it tomorrow. I strongly suggest anyone with this problem to take it in and get a replacement. Hopefully my new one works fine.

One thing I did find weirdness on my order slip for the new phone, reason for replacement is marked as a "dead pixel issue", and mentions nothing of the sim card problem. Odd... Maybe it was quicker for him to get it replaced with that problem, rather then explaining what was actually wrong. Weird... But at least I'll have a replacement soon.
 
I have this problem every time I reboot my iPhone 4, but I don't have the proximity sensor issue. Everyone else I know has the proximity sensor issue. For now, I'm just planning on not powering down my phone, as I'd prefer dealing with this to the sensor issue.

Re-seating it fixes it until the next reboot.
 
Mine did this from day 1... Would do it 1 - 4 times a day. I finally made an appointment at the Apple store for Saturday and was out of the store in about 10 mins with a new phone. I offered to show the guy at the genius bar the pics I took of my screen every time it happened, but he said he believed me and swapped it out. No problems since then... and didn't have any other issues with the phone since I received it.

It's an awesome phone/device.
Michael
 
Did anyone else just get a "No SIM card" error?

I just got a really weird error. My iPhone 4 was sitting on my desk and all of a sudden it popped up with a little message bubble saying "No SIM card" and showed the same thing where the signal bars would be. I tried turning off my iPhone and then turning it back on but it remained the same. After about 4 minutes the signal came back and all is normal.

Did anyone else experience this?

If it is a network thing I live in Austin, TX for a point of reference.

Cheers.
 
loganwhy said:
I just got a really weird error. My iPhone 4 was sitting on my desk and all of a sudden it popped up with a little message bubble saying "No SIM card" and showed the same thing where the signal bars would be. I tried turning off my iPhone and then turning it back on but it remained the same. After about 4 minutes the signal came back and all is normal.

Did anyone else experience this?

If it is a network thing I live in Austin, TX for a point of reference.

Cheers.
Click to expand...

I have to wonder now if it's an Austin, TX issue - I live in Austin, received my phone 6/23, and since 7/4, I've been occasionally getting the "No SIM card installed" error. Turning it off for a few minutes, and turning it back on seems to fix the problem, but it's a little bit of a pain.

Did you ever find a solution to this, or did you end up going to AT&T for a new SIM card?
 
I received the error the first night I had the phone. Just out of the blue it popped up. I pulled the SIM out and inserted. It worked for a couple minutes then did it again. The second time I wiped off the SIM and reinserted. That was about a week ago..no issues since.
 
I ended up having to switch the phone out completely. I tried a new sim card and it worked fine for a few hours, and then BAM "NO SIM" pops back up. I suggest exchanging it from where you got it from or at an apple store. :cool:
 
I had it happen tonight in Nashville, TN. I was holding the phone. It went to NO SIM. I simply did a hard reboot (reset) and all was fine. Very odd, though.

I've had my phone since 6/23 and this was the first it ever happened.
 
a.jfred said:
I have to wonder now if it's an Austin, TX issue - I live in Austin, received my phone 6/23, and since 7/4, I've been occasionally getting the "No SIM card installed" error. Turning it off for a few minutes, and turning it back on seems to fix the problem, but it's a little bit of a pain.

Did you ever find a solution to this, or did you end up going to AT&T for a new SIM card?
Click to expand...

Maybe theres a lotta dust in the air by you? Seems like it would happen if the SIM card is dirty
 
same thing happened to mine on the first day i got it...
took it in to att and they swap it out for a new sim card.

apparently they uses a few different micro sim...and they guy said he alrdy handled 4-5 similar cases of "NO SIM" error and switching a new micro sim works fine.

Its been over a week since i took it in to made the switch and the issue never happen again.
 
I got it the second day of having it on launch day.
Apple had to replace my phone completely.
 
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