yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] that_was_easy:
FWIW, I just returned from an hour visit at an authorized AT&T Device Support Center here in California where my SGH-I337 was replaced for the second time. I purchased it in 02/14 so I am still under warranty, but they are completely willing to replace these w/o any interest as to the condition of the device, as long as the warranty is active. It took about 3 months for the first replacement to exhibit the symptom. I am actually surprised to see that it is not unique to this model, but I'm wondering if anybody is aware of any testing or troubleshooting done by Samsung or AT&T.

When I brought up the fact that this is the second replacement and asked to speak with a supervisor, the supervisor indicated that it was a known hardware issue and said that various software patches have attempted to fix it, to no avail. So, they are aware of this. Since a certain set of people who own these devices are obviously quite adept at troubleshooting, I asked if there was some sort of service bulletin (like are released in the automotive industry) or other internal description of the problem and was immediately stonewalled with "nothing we've tried worked".

So, I'm wondering if anybody else has had any contact with AT&T/Samsung which yielded any useful information about this defect. If Samsung/AT&T would share their information (things they've tried, etc.) it seems to me that it would certainly help the rest of us (really, you guys) further zero in on the issue.

TL;DR I have the issue too and am on 2nd replacement, under warranty. Samsung/AT&T can't fix it with software according to AT&T tech support. Cheers.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Camicia:
Interesting comment... You can read my story here.

The T-mobile customer rep that I was pressing to restore the old SIM told me: "Restoring your old SIM is not going to fix the problem. When that problem starts, it starts occurring more and more frequently." So it sounds like this does along with what you hear at AT&T.

I am going to articulate my thoughts with some facts and some speculations in another post. The conclusion is that the time spent on this problem is wasted. You may be able to reduce the problem for a while but it will eventually come back. I am planning on buying on a new phone. It seems that Samsung or the defective chip manufacturer ended up with a chip or a circuit design that fails earlier than expected.

I wonder if the average is significant and if some pressure can be put on Samsung so there is some advantages for the affected consumers. Ideally to issue a recall or something that can end up with replacing the failing devices to everybody with this problem.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] dsfletch:
I am having the same issue. Replaced the tray and same thing. After reading most of the posts here I took my phone apart and took a fingernail file to the contacts on the motherboard. Cleaned the contacts well and re assembled the phone. So far the issue is gone. I will report back after a couple days.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] dsfletch:
So much for that. That did not solve the problem

---------- Post added at 05:10 AM ---------- Previous post was at 04:46 AM ----------

I took the little flat screwdriver that came with the kit and placed it between the prongs on the motherboard connector and put a little pressure and rubbed it back and forth. As soon as I did I felt and heard a small pop noise. So far I have rebooted it several times with no problems. I will report back after further use.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] SwoRNLeaDejZ:
Just to point something out, in CDMA phones, like Sprint's S4, the only thing the sim is being used for is LTE coverage. That's why disabling LTE fixes the problem, because the phone stops polling the sim to check for LTE capability and coverage (the dope at the Sprint store actually suggested this as a fix. Yeah, that's why I bought a 4G phone, and pay for 4G speed, so I can exclusively use 3G... That makes sense...). Sprint's 3G network speed is abysmal at best, and shameful at worst. The only way to fix this issue, in my opinion, and after trying just about everything, is to get a warranty replacement or buy a new phone, period. Anything shy of that is a waste of time, and a bandaid, in my opinion, based on my experience.

---------- Post added at 10:34 PM ---------- Previous post was at 10:18 PM ----------

I just started a Change.org petition. Please sign and share, share, share! Might not help, but it may. A change petition got boot loaders on HTC devices unlocked. Let's see how it goes. I know how frustrating this issue can be, as I've dealt with it personally!!!!

https://www.change.org/p/samsung-re...-removed-errors-regardless-of-warranty-status
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] djfotizo:
I ended up using info on the web. Access service mode on the phone and do it that way... Been a few weeks now so don't remember the site/instructions used, but it was easy to find via google...
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] jermsmit:
I had the same issue - in fact I still do.

Reverted from CM 11 , back on stock

After replacing the Sim with a new one, issue still happens.

I suspect that its the soldering on the sim slot itself which is non serviceable and to my luck the phone is no longer covered under any support warranty plans.

My store posted on my blog - I love this phone, but at this point its time for a new its almost unusable at this point

jermsmit com/galaxy-s4-no-sim-card-error-please-reboot
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nideiki:
I have the same issue but mine works on SIM cards that are on voice plan only. The moment I insert a SIM with data plan I get the issue.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] m0nk89:
I was finally able to reproduce this issue. I have a t-mobile sgh-m919 with the same exact problem. It is DEFINITELY a hardware issue. It used to happen intermittently (~once a week) and would fix itself with just rebooting, until it started happening multiple times a day, and then it stopped working completely, constantly no sim card. I swapped out the sim tray with one on ebay, still no sim card error.

I then added some tiny squares of cut post-its on top of the sim tray ribbon connector to put constant pressure on the connection: TADAAA. Phone magically came back to life. I could reproduce the issue by just keeping some finger pressure on top of the connection. It would work fine as long as I kept pressure on the connection, but as soon as I took my finger off, within 10 seconds the issue would come back. Reproducible every single time. There is basically some connection in the motherboard or in the connector that is loose and requires pressure. There is no issue with the sim tray to my knowledge.

I have a good feeling that this fix is only temporary and that the problem will just keep getting worse, like some terrible degenerative disease. My advice is to try putting some layers of stickies on top of connector to hopefully "fix" the problem, but ultimately we need to start looking for new phones :mad: Or we could all sign the petition below and hope for a damn miracle...

https://www.change.org/p/samsung-re...-removed-errors-regardless-of-warranty-status
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] djfotizo:
Here is what I used to unlock. 668 hrs uptime since unlock!

http://techbeasts.com/2013/12/26/ho...mobile-galaxy-s4-sgh-m919-sgh-i337-sgh-i337m/

2.10.15 - Anybody tried this yet? I accidentally rebooted my phone taking a screenshot and the sim error came back. I did the steps above and after it restarted, error is gone again. 600 more hours uptime. Mine is definitely a software issue triggered by the lte chip checking lock status on the sim or something of that nature.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] iateshaggy:
petition signed. this is my second s4 to do this and even after replacing the tray i am still having errors. my next phone will definitely be an htc m9.

https://www.change.org/p/samsung-re...-removed-errors-regardless-of-warranty-status[/QUOTE]
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] FarmGeek4Life:
I also have this problem, and pressure on the connector seems to do the trick; at least, it keeps it from happening so often that the phone becomes unusable. But yes, a very annoying problem.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Terr20114:
A FIX! (ACTUALLY A PATCH)

The problem stared happening to my tmo s4 too often lately so I got fed up n opened the device. Used a brush to brush off the connector flex cable and the circuit then I cut a thin piece of Eraser and placed it on top of the connector flex cable. I put the back on it again with the eraser applying pressure. PRESTO! problem hasn't occurred since. This is the best patch I've found so far (we can hardly call these fixes).
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mxasf:
SIM card reader: different versions?

Hi everyone -

I'm having the same annoying problem. and am truly annoyed beyond belief. I really would love to see a class

action lawsuit come out of this.

I've read all of the posts about this problem on every one of the forums I could find. While lots of people say

they replaced the port, and it didn't work, I just noticed something interesting.

Most websites, amazon, ebay, etc., simply list the SIM card port as

"Samsung Galaxy S4 GT-I9500 SGH-I337 SCH-I545- (AT&T)(INTERATIONAL)(VERIZON) Replacement SIM Card/ Micro SD Memory Card Slot Holder Flex Cable"

etc, or some variation.

I noticed on the website "phonepartsusa", that they have two parts for this item: "Rev 0.3" and Rev "1.3/0.5."

Note that their mobile site is crappy, and to see these parts, you may need to use a desktop web browser.

I'm intrigued about the difference between these two "revisions", and wonder if the latter one might have

a better flex cable. I imagine most people who sought out a port, saw the cheap ones on Amazon and went

that route, which do not list any sort of version #. I haven't noticed any discussion about flex cables having

different revisions, and what the revisions entail.

The text provided on PPUSA's website , for the two items is

"Samsung Galaxy S4 i9500 i9505 i337 M919 Sim Card Memory SD Card Flex Cable REV 0.3"

..... and ...

"Samsung Galaxy S4 i9500 i9505 i337 M919 Sim Card Memory SD Card Flex Cable REV 1.3 / 0.5"

They charge $11.95/each, which is a little more than everyone else.

I'm happy to be a guinea pig and purchase/try out the latter version, but I thought I'd ask first if anyone knows about this,

or if anyone has already tried this supposed new version.

Pretty much grasping at straws at this point ....

-marc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] pjedi:
I don't know if I've mentioned this yet but I only seem to get this SIM error when my phone is rebooted. Otherwise it will go months without the error until the next reboot.

To fix it, I power down the phone, remove the battery and the SIM card then put them back in and power the phone back up. Usually it fixes it for me on the first try.

That's what I find weird about all this. If it's a hardware problem then why does it only happen to me when my phone is rebooted? On mine the rebooting is what appears to cause the error.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] aguacateojos:
So, here's my experience with this error. It started happening in August (phone was running CM 10.2) and happened CONSTANTLY whether phone was moving or not. About a month later it eased up and only happened maybe once a week. That is still the case when the phone is on CM 10.2. HOWEVER - if I upgrade to CM11 or CM12 the phone immediately stops recognizing the SIM card. Like, I can be running everything perfectly, reboot and flash the new ROM, boot up and have no SIM, reboot and restore old ROM, no SIM error. Never even touching the darned card.

So, I don't know what to make of it all. Am I happy with my ROM? Yes. Do I want to be able to upgrade and try out something else? Yes. What an annoying error.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] cybershawngates:
Signed. 3 w this same issue. Had to finally cash out the warranty from squaretrade get s5
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mxasf:
Very early in my experiment of changing a revision 0.3 flex cable to a revision 0.5 flex cable. So far so good, but as many people have noted, a lot of "fixes" seem to only last awhile and then the problem comes back.

The flex cable part clearly has the revision written (in small font): rev 0.3 or rev 0.5. I am curious if anyone who has replaced their SIM card flex cable, who encountered problems later, can verify if they have a rev 0.3 or rev 0.5 flex cable. Most (~90%) of the commercially available SIM card readers for the S4 do not identify the version # when you purchase it. It would be funny if they are all the older rev 0.3 cable.

Hopefully there is something significant about the rev 0.5 flex cable. I haven't seen any discussion about this detail, so I will at least remain cautiously optimistic. I'll report back in a week.

-marc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mxasf:
Well crap. My experiment failed. The rev 0.5 cable did not solve the problem, and a couple days after I installed it I got the dreaded error / reboot.

I guess we can add "rev 0.5 flex cable" to the growing list of solutions that do not solve the problem.

Wondering if, with an unlocked bootloader and a custom kernel, if the "error" can be worked around via software or a smart kernel. Obviously it's software that says "we will now reboot". Also wonder if due to the widespread occurrence of this problem, the problem could be used to leverage Samsung into opening the device up. Probably wishful thinking, but I think it's the only hope now. For now I'm back to my Galaxy S3, which appears to be a much more robust device.

-marc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] elchingon:
I had my S4 for a year and half and just two months ago my screen and LCD cracked. and i switched the frame assembly and LCD. 2 days after i started getting this error I believe its the motherboard that is bugged/bad. i am about to ask for a refund since this is killing the data/network at random times until reseted.

---------- Post added at 01:19 AM ---------- Previous post was at 12:58 AM ----------

mentioned in this thread is said something about Tasker and setting automatic reboots after simstate:0 can someone explain it to me. i would like to try it.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] BeardofZeus:
My solution

Tried a lot of different solutions. For my phone the problem was the cable that connects the SD/SIM card tray to the mobo, but you don't have to take your phone apart to see if it's the same problem for you.

Get some double sided tape (for thickness and easy application) and just put it over the area where the cable connects as shown in the attached pictures. You can see I put a small strip just beside the LED and it only creates a small bump on the back of your case when closed. I've gone an entire week since the fix without the issue coming up again where it would happen about twice a day previously.

Hope that helps!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I've went a month without the error and then without fail it comes back with a vengeance I doubt very seriously if there's any fix other than warranty exchange.

I've tried every fix in this thread
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Craig01b:
S4 sim

Released, rebooted, new sim tray.....no joy. Local CPR in Kitchener sez Samsung has issued a fix for this with a chip replacement on motherboard which requires re soldering. They have not tried it yet, 35$$ to try......150 if it works. If it doesn't work, there is a good chance the phone will be totally dead..... Flip the dice. I may try it, just because. :p I have never modified or played with phone ....it's been good for 18 months. Then poof.....no sim, no phone.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Buddyjohn:
possible fix >worked for me

Hey guys, I have been having the same issues you guys have with this. I have tried all the hardware type fixes and none seemed to work. as of right now I still have the piece of folded paper pressing on the ribbon cable connection to the mother board. and 3 or 4 layers of tape on the SIM, but I believe those aren't fixing the issue as i was still having issues with those on. the new thing I tried this:

*Turned of all location services in the settings

*Find and Flash a new Modem(baseband) - I had updated mine to the NC1 for the longest time and now that I think back my issues started happening with that, but it started happening later on that I did not even think it was an issue. until one day TWO MONTHS ago I had the thought that it may be the modem. I have the Canadian variant so there is not many modem versions out there. but I tried them all. since I updated to NC1 some of the older ones wouldn't let me flash them. but I found one that did flash: MK6

Ever since I changed the Modem to that I have not had the error occur. as stated above, I did that 2 months ago. now this may work for some of you guys and it may not work at all, but id say give it a shot. try flashing a new one, if it fails to flash try a different one. once one sticks try it out for a while and see if the SIM error returns, if it does try another modem.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mxasf:
more attempts at fixing this

I have been continuing my love/hate relationship with my s4. Currently I am under the opinion that applying pressure directly to the Sim card flex cable is the key (not under the back cover but with the phone disassembled, and an object directly on the flex connector). I am out of warranty, so sending off to Samsung /att isn't an option.

I have been trying guitar picks with good luck. I like guitar picks as a solution to this problem since they are sort of universal, allowing a fix to be reproducible by others. I usually cut a pick to be about 1cm x 1 cm, to be large enough to only cover the flex cable.

In terms of pick thickness: I started with a medium pick ("dunlop brand") and it seemed to work ok for a couple days before the error, and the error occurred a few times.

Now I switched to a thicker "heavy" pick (fender brand). The error has been gone for like 4 days. I know several "fixes" here were promising I initially and turned out to fail later.

I am intrigued that a heavy guitar pick (thicker) is working observedly better than a medium pick (thinner), which supports the idea that applying pressure to the Sim flex helps solve the problem. Maybe the key is finding an optimal object to apply pressure. Hoping the heavy pick works out....

Has anyone else had good or bad luck using cut up guitar picks to apply pressure to the Sim flex?

-marc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] crazyhick:
Wow, I thought, gee that won't work because I've restarted like 30 times without the cover on at all, but I did a restart just pressing that exact same spot with my finger and it worked. My S4 (from Rogers) had no data or phone access for two days and many restart/reseating of the SIM Card. I may have just been lucky during this restart, but I doubt it.

Thanks
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mark324:
I've had months without getting this error again. Only now I get disconnected from service if I lightly drop it or put it in my pocket . it would connect after awhile. I'm guessing the tape is no longer giving enough pressure.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mark324:
The tape on the ribbon does not seem to work anymore, I have added some tape on the back of the battery cover where the Sim card would be, it seems to work well. I did few drop/bump test and it hasn't disconnected.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mxasf:
Still having pretty good success with a cut up thick guitar pick directly on the flex cable connector. At 2 weeks I had one sim card error at the 7 day mark, as opposed to once or twice a day, pre fix. Not sure if I will continue to have errors and what the frequency will be, I will keep reporting back.

For now I am happy. I think any kind of thick item (guitar pick, double sided tape, etc) on the sim card reader flex cable directly is the way to go. You may still have an error occasionally but hopefully the incidence will be decreased substantially.

If it stays to one error per ~7-10 days, I will remain happy.

-mxasf
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] elchingon:
Can you help me on making a tasker profile?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Terr20114:
I opened the phone and and added some thick paper about the Sim tray connector. Problem was occurring 5+ times a day Now occurring 1 or 2 times every few weeks. If I press the area every few days then it doesn't occur at all.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] basalioglu95:
i had this problem too

when i call somebody phone typing sim card removed will restart how can i fix it
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Search this thread there's hacks but no solid fix
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] AliGuled:
Samsung Galaxy NO SIM error

I no longer have the problem
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Junpei_Shibayama:
And why do I get this on mine? SIM lock free Intl version? Galaxy S IV with Android 5.0.1? A few days earlier this error re-occured twice?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
You couldn't be more wrong you need to stop giving false information.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] lgsshedden:
thanks for this -- I was thinking it was a hardware issue having changed a number of firmawares + ROMs but I followed your advice, went back to the MK6 modem and all was resolved. So for me at least it appears a baseband issue. about to update to Bell's official 5.0.1 release OC4 so we'll see what happens then.

Thanks for the post!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] lgsshedden:
so used Odin to install Bell OC4 version 5.0.1 Lollipop and the initial flash did not replace the MK6 modem, which does not work with 5.0..1. Good to know. So back to Odin and flashed the second time, this time the modem did update to OC4 -- so even in Odin with a full firmware the modem is tricky to flash. Anyways, no errors associated with the Sim card thus far -- hopefully it is one of the iterative improvements in the firmware and whatever was introduced between MK6 and NC1 or NE1 has now been corrected within OC4.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] SwoRNLeaDejZ:
You sir, are a dope, and couldn't be further from correct. The phone that I experienced this error on, was completely 100% stock, because it was a phone provided by my employer. I was LEGALLY forbidden from rooting it, or modifying it in any way shape or form. At the time I received the error, I brought it to a Sprint repair shop and they confirmed it was hardware related. The first thing they did was check for root and custom software.

Go provide incorrect information and ridicule in a different forum, because it isn't needed here.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] AliGuled:
problem solved
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] creepyncrawly:
It's really a matter of how you say things. For instance, you could have said "if your phone has No SIM issue, it might be because your phone was unlocked using illegal apps and Samsung block it..." Probably no one would have an issue if said that way.