Just one SIM will not work with my phone - Galaxy S III Q&A, Help & Troubleshooting

Hello everyone, i have a Galaxy S3 with cyanogenmod 10.1 installed. This morning my cellphone started to give me no signal, I initially though it might be some problem with my carrier, but clearly this is not the case. I tried to swap SIM cards with my mom cellphone (another S3 with ROM stock), and the two SIM worked. I put again the two SIMs in the respective phone, and my phone still couldn't get signal with MY SIM, while with my mother's there weren't any problem
Basically: my phone can't read MY SIM out of the blue, but my SIM works with other phones. And my phone aswell works with other SIM. This seems to me without any sense. Can someone figured out why it does this?
I tried to wipe the phone, change rom (from cyano 10.1 to 10.2), the issue is still there.

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[Q] unusual problem

Please help, have a horrible annoying problem…
Recently upgraded to iphone [to sell]
Put my micro sim in my phone until my normal sim arrived, once I got my normal sim and activated it I found I could longer make calls or send txts. But I can browse the web, very strange.
Currently my signal bar has an exclamation mark next to it, I’ve tried an Orange and T-Mobile sim which work absolutely fine, I have tried other O2 sims but get the same problem.
I’ve also tried flashing using task29, have tried radio’s 2.07.50, 2.10.50 and 2.12.50 and various different roms
Thanks in advance
does the sim still works in the iphone? If not its a sim failure and you should get a new one from your provider
check the small print, your sim probably belongs to jobs corp now, and has deactivated itself and reported your treason directly to the implant in steves head when you took it out of the iphone
Lol going to have to sleep with one eye open...but to answer wilwilwel the micro sim no longer works and the sim im using at the moment works absolutely fine in any other phone
HELP!
I dont know how to get home with out my htc

[Q] At&t Galaxy SII unable to read the sim card

Hi All,
I have a Galaxy SII, which I rooted and flashed with ICScrewD ‬‬‬‬‬♦‬♦♦‬♦Homemade Ice Cream
http://forum.xda-developers.com/showthread.php?t=1375255
It worked fine for a couple of days, now all of a sudden I am not getting any signal on my phone, and instead of the signal bars I am getting the no network symbol. I tried different modems, different ROMs, doesn't seem to work. I even went back to the stock, but no luck.
When I went to the wifi & network settings and tried to click on the network settings it says "insert sim card" even though the sim is already in there. I tried my sim on a different phone, it works fine. So i am guessing its not At&t's fault.
Has anyone else had the same problem? Any help is greatly appreciated.
When you re-inserted your sim card back in your GS2, what happened? Is it an old sim and are the contacts worn and scratched?
The contacts are just fine. Even when i reinsert it nothing happens, I still get the no network symbol. It is basically behaving like no sim is inserted.
Well it sounds like a trip to an AT&T store might be in your future to test another SIM card. Hopefully that's all it is. Wifi radio works fine?
Try reflashing back to stock?
The wifi works just fine, and i tried flashing it back to stock, did a factory reset also, but nothing seems to work.
I have not dropped my phone even once, so that rules out the physical damage.
Well not sure this will help *fix* the issue, but might provide a bit more insight into what exactly the phone is and isn't seeing. If you download Elixir 2, linked below, and run a report and send it to yourself via email, look in the Telephony section of the report and see if the phone even sees the SIM card. Obviously it sounds like it doesn't, but if it gives you your SIM serial info in there, you might be able to rule out an issue with the actual card itself, etc.
Elixir 2 - https://market.android.com/details?id=com.bartat.android.elixir&feature=search_result
Nope, it says sim state is unknown, I guess i will have to go to the At&t store then.
Thanks anyways.

Work this out for me I am confused

Some time ago I posted on this forum re no end of data 3G dropouts on my Galaxy SII meaning I was experincing no end od 3G data drop outs. Well anyhow today I decided to do some experimentation and to swap SIMS.
I have two mobiles, a Galaxy SII and also a Samsung Omnia 7 WP7 Mango. I decided to swap SIMS, put the GSII SIM in the Omnia 7 and the vice versa.
I switched both phones back ON as usual, inserted the SIM PIN code and bith phones booted up without any hassles.
Now here is the interesting thing. I ran both the phones for about 40mins, thinking and assuming if the SIM was faulty from the GSII the Omnia 7 would start to play up, but unfortunately both phones ran without any hickups and better still the GSII and the Omnia 7 did not face any data 3G internet dropouts, the GSII ran well and not a single data dropout and the same went for the Omnia 7, but my main focus here was more on the GSII.
But as soon as I put the SIMS back into their original phones the trouble for the GSII started again a bit later on.
So here the big Q whats the fault here, the phone or the SIM.
My guess is that the sim that is originally in your GS2 is faulty. Perhaps the sim is worn where the sim is touching?
You ruled out a phone issue when you put another sim in your GS2 and it was running fine.
Just my opinion anyway.
Thats correct when I inserted the SIM from the Omnia 7 (my other phone) into the GSII and left it running and on the data/internet for 40mins or so I did not get one droput what so ever and the same goes for the SIM from the GSII in my Omnia 7, so i.e a sim swap.
But the funny thing is non of the data on both phones dropped out.
Now assume if the SIM is the GSII is faulty, why didnt it cut out or I loose data connection when it was in the Omnia 7, this is what I cant figure out.
Also can a faulty SIM cause this problem.
I'm assuming that the Omnia7 has better contact points on the sim from your GS2. And that's how it's not faulting.
Are you only losing DATA and still retaining all phone signal?
If that is the case then it may not be a sim issue but a carrier issue based on which baseband version you're running on your GS2?
It could be the pins of the Omnia 7 are slightly more raised than that of the GSII, probably the GSII ones a slightly more flat so the contact of the SIM and pin is just touching or skimming the surface or yet again the SIM is just faulty.
Now the other funny thing here is, say for eg if I am on the phone i.e a call and the data all of a sudden drops out, than my call will drop out as well. But this problem is more data than call.
How do find out what baseband I am using and can the carrier fix this issue.

No SIM Card error on LeTV 1 pro X800.

So, recently I bought this beautiful phone that came pre rooted with cuoco92's rom. I put my SIM in and was ready to go. But I messed up with titanium backup and deleted the system phone app.I could still call and all, but the menu while in call was gone so I could not hang up etc.
Then I obviously decided to re-flash the rom. Problem is when I did so, the phone's signal icon was grey with a small x . From there it went downhill. I flashed the rom and some others multiple times, I even returned to stock rom+recovery, and the problem changed from what I described to a simple No SIM Card.
The phone now does not acknowledge the SIM when i put it in at all, while before it did know it had a sim inside, it just would not work.
Is there any universal troubleshoot process I can try before contacting the shop and sending the phone back? Could this be hardware?
Note that today I changed my micro sim to nano sim since the phone takes both, in hope of solving it. But it did not work on both slots.
Thanks in advance.
Lannibal Hecter said:
So, recently I bought this beautiful phone that came pre rooted with cuoco92's rom. I put my SIM in and was ready to go. But I messed up with titanium backup and deleted the system phone app.I could still call and all, but the menu while in call was gone so I could not hang up etc.
Then I obviously decided to re-flash the rom. Problem is when I did so, the phone's signal icon was grey with a small x . From there it went downhill. I flashed the rom and some others multiple times, I even returned to stock rom+recovery, and the problem changed from what I described to a simple No SIM Card.
The phone now does not acknowledge the SIM when i put it in at all, while before it did know it had a sim inside, it just would not work.
Is there any universal troubleshoot process I can try before contacting the shop and sending the phone back? Could this be hardware?
Note that today I changed my micro sim to nano sim since the phone takes both, in hope of solving it. But it did not work on both slots.
Thanks in advance.
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Its a shame that no one replied in such a long time ...
Try this https://www.google.pt/url?sa=t&sour...YW91Hmbn0480Lu56g&sig2=uO7g8r3NKxE8LeL165cIhQ

SIM NOT DETECTED! need help!!

HI GUYS, Im having an issue with my phone(HTC dna) that is getting beyond frustrating. I got the phone like a month ago off of something it worked fine for the first week..then one day randomly stopped reading my sim card.. Im not a total dummy so ive done and ruled out the obvious , my firmware was verison 4.09.605.4 I just updated it to the current one. 4.09.605.8 so i ruled out firmware being an issue. i then went to amazon and bought the new board were the sim card attaches and the audio jack attaches i just installed that yesterday and still nothing!!. I even bought a new up sim card tray still no.. when the sim card TRAY isnt installed i get a message when about a im card not detected ,ect. when i push the tray in that message goes away which indicates it is trying to read...but in the corner you see a sim card with x through it which means no sim card..I've replaced my sim card 3 times just to rule out that but my sim card works in my other phone just not this one.. When i first got this phone a month ago it worked fine!! no troubles.. Im on the ATT go plan..i put my sim in and nothing..but now it just doesnt work..ive tried hooking my phone to my computer and opening htc sync manager and tried doing the repair and nothing ive litterally tried and ruled out most of the obvious, Is this a known problem with these phones? Can anyone please!! help me with a solution i want this phone so badly..i love this phone!!..ill be waiting for replies..hopefully someone can drop knowledge to me! thank you!
I switched over to straight talk and had the same thing happen for awhile. Changed the tray and still didn't work. What ended up straightening it out for me was either resetting the apn settings or the new sim card i got. After I did those things it worked fine.

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