[Q] "No Sim" - Galaxy S III Q&A, Help & Troubleshooting

I have a Samsung Galaxy SIII Model: GT-I9300.
Earlier this week my phone suddenly popped up with the "No Sim" error. I Google searched the issue and found several suggestion such as reformatting the phone to it's defaults, trying to clean the contacts, even to try and stick a piece of paper behind the sim card to try to increase connectivity between the card and the reader. I did all of these things, I read that if none of this fixes it I need to take my phone in for somebody to replace the sim card slot. I did so and the place did not have the international sim port necessary to fit into my phone. However the guy working said he was able to plugin an american sim into the phone, though it did not fit into the designated place. He was able to plug it in and he still got the "no sim" error. He's concluded that it's something beside the sim card's port.
Has anybody heard of this? Any suggestions would be appreciated.

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losthorn said:
I have a Samsung Galaxy SIII Model: GT-I9300.
Earlier this week my phone suddenly popped up with the "No Sim" error. I Google searched the issue and found several suggestion such as reformatting the phone to it's defaults, trying to clean the contacts, even to try and stick a piece of paper behind the sim card to try to increase connectivity between the card and the reader. I did all of these things, I read that if none of this fixes it I need to take my phone in for somebody to replace the sim card slot. I did so and the place did not have the international sim port necessary to fit into my phone. However the guy working said he was able to plugin an american sim into the phone, though it did not fit into the designated place. He was able to plug it in and he still got the "no sim" error. He's concluded that it's something beside the sim card's port.
Has anybody heard of this? Any suggestions would be appreciated.
Click to expand...
Click to collapse
what modem are you using?

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No Sim error I got when I had cut my Sim wrongly. So maybe even that could be a problem
sent from the state where Marijuana is NOT illegal !

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No sim is usually the sim at fault try another .
jje

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Responses to suggestions
I don't understand the question "which modem". It is a stock UK Galaxy S3 that has been restored to factory.
The sim card has not been "cut" and worked perfectly for 6 months in this phone and still works my old iPhone.
I have purchased a replacement SIM/SD module off of Amazon, replaced the original and still get the same problem.
The phone boots normally, the screen responds normally...just no sim card detected.
Thanks for your responses.
Any other ideas?

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losthorn said:
I don't understand the question "which modem".
Click to expand...
Click to collapse
Settings > About phone (Screenshot)

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Very Helpful
rootSU said:
Settings > About phone (Screenshot)
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Click to collapse
So before asking for clarification of a responding post on a FORUM, you feel that I should read 22 posts about dozens of unrelated issues? I guess I've mixed up the definitions of FORUM and Wikipedia. I'm not wanting to learn to rebuild, root, or tweak the phone. I just want it to perform as it was intended. I did use Google to thoroughly search the Internet for the issues that I am having. I reviewed every link that related to the issue. I found none that addressed my question and further, did not find one on XDA that answered it either. Your direction to the FAQ does nothing to further the resolution of my issue.
If you are the Forum Police and are trying to save space on the FORUM
[fo·rum
/ˈfôrəm/
Noun
A meeting or medium where ideas and views on a particular issue can be exchanged.
An Internet message board.]
maybe you should think for hitting the return key and interfering with the exchange of ideas.

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losthorn said:
So before asking for clarification of a responding post on a FORUM, you feel that I should read 22 posts about dozens of unrelated issues? I guess I've mixed up the definitions of FORUM and Wikipedia. I'm not wanting to learn to rebuild, root, or tweak the phone. I just want it to perform as it was intended. I did use Google to thoroughly search the Internet for the issues that I am having. I reviewed every link that related to the issue. I found none that addressed my question and further, did not find one on XDA that answered it either. Your direction to the FAQ does nothing to further the resolution of my issue.
If you are the Forum Police and are trying to save space on the FORUM
[fo·rum
/ˈfôrəm/
Noun
A meeting or medium where ideas and views on a particular issue can be exchanged.
An Internet message board.]
maybe you should think for hitting the return key and interfering with the exchange of ideas.
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Click to collapse
WTF are you talking about? I asked you for a screenshot
Idiot.
EDIT> Anyway, this is a development forum, not a help forum. People who come here are people who modify their phones and if they have a problem with their phones, they most definitely should have read the stickies first, because chances are, their question was not the first time that that question would have been asked.

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My apologies
rootSU said:
WTF are you talking about? I asked you for a screenshot
Idiot.
Click to expand...
Click to collapse
I thought your signature block message was directed at me. I suspect that anyone that view your signature block might make the same mistake. The large print and use of color cause your message to be lost in the clutter.

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losthorn said:
I thought your signature block message was directed at me. I suspect that anyone that view your signature block might make the same mistake. The large print and use of color cause your message to be lost in the clutter.
Click to expand...
Click to collapse
Only you
Anyway, good luck.