yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] shamelin73:
New issue after the repair. This is what I posted in the AT&T forums to see if I can get help.

I just received my Galaxy S4 back from repair the third time and now it is carrier locked. The original problem was it from kept losing the SIM card and having to reboot the final repair Samsung replace the system board.

I originally had this phone unlocked as soon as I bought the phone. Now after I got it back it is carrier locked and the unlock code does not work.

I got the phone back from Samsung with the same serial # and IMEI # so the original unlock code should work however it is not.

Samsung says to talk to AT&T but AT&T is giving the same unlock code.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
AT&T did work with me on this and sent me out a new unit (newly refurbed). After all this bologna I didn't even fire up the new unit, I traded it for a lg g2. Point being that if you get the right person at AT&T you can get them to just send you a new unit if you go through all the steps with them over the phone.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] NiMaD83:
Does anybody have a pic with the cable itself? I have yet to take my phone apart to the mobo but i wanna make sure its the right cable.

Thanks
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] _eroz:
Having the same problem. Tried the tape, swapped sim cards, replaced the sim card tray, switched roms a few times from 4.3 TW rom to AOSP back to a 4.2.2 TW rom. Nothing has worked. I think it is related to the Google Play Store app updates, as everytime I would get the no sim card error there was also an app update waiting after I rebooted. So I've tried turning off the app update notification and every thing was fine for over 12 hours but I just got another sim card error message. And after rebooting I went into the Play Store and there were 2 apps ready to be updated.

Is there something to delete the Play Store and reinstall in a TW rom?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] xredrumx:
Followup

I'm going to follow up on this post, because my samsung goes 4-5 days without showing No sim card inserted (16gb ATT Galaxy s4 white...had it since last june or July) and first signs were November-December, but was not critical. Sometimes I have to restart it every minute, then it goes away for a few days. Considering just getting rid of it..but my contract doesn't run out for a while! Anyone find a concrete 100% solution?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I haven't and I'm like you sometimes I'm just sitting here phone in hand and I get the error then it'll go 3 or 4 days.

I'd turn it in for warranty but I'd probably get the mk2 or nb1 and I'm on the old bootloader.

So I'll keep it and wait til August til my next upgrade. I do love this phone other than that. It is annoying though for sure.

"All we know is...He's called the Stig!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] DgtHorse:
I have the exact same problem. Ended up tried sim swap, changed sim reader...nothing. Still got those errors randomly. I just decided to try this pressure trick on the ribbon cable that connects the sim daughter board to the main board. We shall see now! :)

The true test would be a full week without the error because i dont think it ever lasted that long.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] DgtHorse:
Sadly, this did not work :(
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] _eroz:
I unsync'd the Play Store and I still get the no sim error. I also restored the phone to an older nandroid of a time when I had no problems. The no sim error surfaced there as well.

Oh well....a couple of days more before the S5 comes out and I give this phone to my kids as game device.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I now firmly believe it's a Samsung phone defect. and absolutely nothing to do with rooting and flashing custom Roms.

Oh well since I'm still on old original bootloader I'm hanging on and dealing with it.

It is what it is

"All we know is...He's called the Stig!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
I totally agree. When I was sending mine back to att I restored it completely back to stock and it still had the issue. There doesn't seem to be a fix that works either which is a big problem.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] NiMaD83:
I have a replacement coming in. After weeks of telling me i need to reset cause no sim detected, it disapeared but now for the last 2 days i have a sim card not detected in my drop down menu that doesnt force me to reset.

So my question is. Can someone PLEASE link me to what rom/kernel to install to get it back to factory as close as possible? I also well right now (for S4 T-Mobile)

kernel is not seanoid enforcing

set warrant bit : kernel

How can i turn this off?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
You need to search the M919 threads for the stock firmware to Odin

"All we know is...He's called the Stig!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] htc_doc:
Ugh. Same problem on my ATT S4 32gb. I get the "No sim card" message at least a few times a day. So annoying. Rebooting fixes it.

I'll probably have to restore it and get it fixed... will lose my awesome loki'd bootloader.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Boy I know when I post this I'm gonna jinx this sucker but for some reason the no sim error hasn't shown my last post on 4/13 man I hope it's the last time.

"All we know is...He's called the Stig!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
I hope you got it to go away for good. Did you do anything in particular to get it to away?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Now there's the million dollar question isn't it? The answer is no I didn't and THAT is the strangest thing right there. I'm not going complain I just hope it stays working now like it should be.

"All we know is...He's called the Stig!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] captivateGS:
Sim car crazy

I've been having this prob for months. I've had the sim changed and everything. Tryied changing program settings nothing is helping and I don't know what causes it. The phone could be sitting on my desk and loose the sim card, it makes me think it's a software issue but I've installed and uninstalled everything i could. Rooted with Original OS from release day...
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] seanb1979:
First S4 I got off ebay and it wouldn't detect any sim cards. Tried multiples from the tmobile store. Bought another one from a friend and now it's having random sim card errors after a month. I'm thinking I need to go back to a HTC. Can't get this wifi to work after flashing a rom (yes I flashed the safestrap mf3 modules.zip.)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] atistang:
For those of you who sent your phone to Samsung, did they fix it for free?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] shamelin73:
My phone went to Samsung 3 times before it was fixed. Then had to have AT&T send me one because they locked it and the unlock code from AT&T would not work. Samsung did not charge me nor did AT&T.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] atistang:
Did you take it to the at&t store, or call at&t?

What about while they sent the phone out, did they give you a phone to use or was it up to you to provide a backup?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
I returned mine to att when it had this issue. I called them and described the problem. We went through all the troubleshooting steps they have to go through. It was probably a 20 minute call. When none of his steps fixed it he ordered me a new phone and overnighted (he said the shipping upgrade was for my trouble). When I got it I sent my broken one back to them. Never was without a phone throughout the process.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] shamelin73:
I bout it just a couple weeks after launch as a refurbished phone and carries 90 days warranty from AT&T as this part of the warranty was out i called Samsung as AT&T wouldn't help. Samsung did not have it listed as a refurbished phone so the did the repair. I had to come up with a replacement for the meantime but AT&T did credit me $50 for a prepaid phone that I could use my sim.

Good luck with your repair. search for threads with me about this.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
When you received your phone which bootloader did it have?

"Maximus! Maximus the Merciful!"

Sent from my AT&T SGH-I337

---------- Post added at 03:29 PM ---------- Previous post was at 03:25 PM ----------

I don't know what I did but as I stated before I haven't had the error since my 4/13 post that's almost a month and I was getting the error almost daily. I'd just be holding the phone and the error would show up. I had the problem for months literally I think since last November or longer.

"Maximus! Maximus the Merciful!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
I honestly don't know what bootloader it had, I sold it before ever booting it up.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Gotcha

"Maximus! Maximus the Merciful!"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ORT14:
I ended up ahead in the deal and with a better phone, so I was happy. But it was really frustrating dealing with the sim error while I had the S4.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I knew I'd jinx myself I got the stupid sim card error after a month of not getting DAMN IT

"Get busy livin or get busy dyin"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Remix22:
Same error with US Tmobile GS4

Hey guys, I'm glad I found this thread, I have a US T mobile GS4, and have been having the same problem. Here's what I posted in the tmobile GS4 forum:

"Hello,

Since the Kit Kat update, I keep having Sim Errors: the phone randomly no longer detects the sim card and says no sim inserted - which is a pain because it looses cellular connectivity. Rebooting generally fixes it (until the next error).

It first started happening when I got a refurb from Tmobile (unrooted stock 4.4.2) was quite annoying because it was happening quite often (like every hour or so), I got a new phone from Tmobile (still refurd - can't get a new one from them - oh and it's my 4th one). Rooted it, installed Dandvdh's KOT49H 4.4.2 and it started doing it again (but less often) - so I got a new Sim but it's still happening.

Found a couple of forums reporting the same issue (ATT version https://forums.att.com/t5/Android-Di...e/td-p/3910878 or other http://forums.androidcentral.com/sam...at-update.html), but nothing on tmobile GS4 so my question is, has any one experienced this, and if so, have you found a fix?

Cheers"

Also, I've done some reading, and found that it seems to be 4.4.2 related (or knoxed bootloader which was implemented with our 4.3 update), and that heat seems to trigger the problem see here http://forums.androidcentral.com/sa...y-s4-major-problem-sim-card-not-detected.html

I'm down to my 4th GS4, two of them have had that problem, I guess I just have to change phone...
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Not 4.4.2 related at all I'm ATT original MDL bootloader and it's happened on every Rom I've flashed from 4.2.2 to kit kat even on stock 4.2.2 firmware. I'm a firm believer that it's a Samsung defect it's happened to too many people on various carriers. For some reason it's only happened once to me in the last month. I've probably jinxed myself now. It's not the sim or anything like that I've had it happen to me just holding the phone and looking at it to not happening for a week.

But since about 4/11 I think it's only happened once. Crossing fingers

"You stay classy San Diego"

Sent from my AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Remix22:
I think most people it happened to are on post knox bootloaders. In my case, the problem was caused by a hardware issue on my previous gs4, it happened mostly when I was walking with the phone in my pocket. But on my new one (refurb actually), it happens randomly even when I'm not in motion and the phone sits on my desk, since restarting always works, it has to be software related here.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Remix22:
Possible temporary fix?

Hey guys, so after reading that it might be due to the sim being pin-locked, I deactivated it, I also taped a small piece of cardboard to the back of the sim holder, so that when the back panel is in place it adds a slight pressure on it, and so far, no errors since Friday. I don't know which of the two fixed it, but I'd say it's removing the pin since I'm quite confident my problem is not hardware related. Cheers
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] atistang:
How do you remove the pin?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Remix22:
in 4.4.2 uncheck Lock Sim card in Settings/Security/SIM/RUIM card lock settings
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] cybershawngates:
Has anyone figured out what causes this? My searching shows lots of ppl have this issue which is hw related. I am out of warranty so out of luck?

Did anyone find it to be a defective sim? We have one phone doing this....changed it w insurance and still same issue so hoping it turns out to be the sim but seems on the Internet everyone says its a hw issue w the phone so maybe they sent me two duds? (SquareTrade quality is not what it was)

If its such a common hw issue samsung u should fix this even out of warranty.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] cybershawngates:
well just in case any one ever needs help with this issue in the future here's what won't work:

1. odin complete firmware reinstall (didn't work)

2. swapped sd cards with another phone (didn't work).

3. It's not the apps - changed phone / accounts iwth another family member, they have no issues iwht my old phone (so it's not the apps)

4. We've heard from some folks in this thread that changing the sim card tray didn't fix it either.

Conclusion: ** It must be a bad mainboard that does this

I have squaretrade insurance and this is the 2nd replacement (yes 2nd! with the same issue) - I'm going to call them again but they are not very friendly. I might just call it and upgrade to a S5.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Agreed 100% it's a Samsung issue and NOT sim cards or trays and I'm upgrading to S5 this week now that there's root.

Too bad other than this ridiculous sim problem this phone is the best one I've I've ever owned.

"All we know is...He's called the Stig!"

Sent from my VisionX powered AT&T SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] atistang:
Samsung ended up sending me a refurbished s4. Its been a month and no errors
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] cybershawngates:
I ended up getting a s5
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I'm ordering my S5 tomorrow

"All we know is...He's called the Stig!"

Sent from my VisionX powered ATT S4 Rockin cCc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
S5 ordered yesterday be here Wed or Thurs root as soon as it's in my hands and waiting for exploit for custom recovery

"There'll be no livin with her after this"

Sent from my VisionX powered AT&T S4 rockin cCc
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] urgas:
I did a trick with copper tape and second day all good

https://www.youtube.com/watch?v=v27Na1ae-vI
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
No more for me my S5 came in today and I love it already rooted and debloated with minor cosmetic changes to font and stuff with Xblast and Wanam I'm loving this baby already

"And on that bombshell...It's time to end the show!"

Sent from my AT&T G900A Soon to be Vision powered
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
Interesting maybe I'll try that to sell my s4 since my S5 is rooted with SafeStrap installed

"And on that bombshell...It's time to end the show!"

Sent from my AT&T G900A Soon to be Vision powered
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] :
Thanks for the link. Probably worth a try, although regardless of the outcome I may try to sell off this phone for the various headaches. Too bad the Samsung warranty isn't anything like Apple's which can transfer from owner to owner.

Any ideas of where to get some copper tape?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ssn713:
This is a hardware issue that cannot be resolved with a band-aid/copper tape. To try and re-sell a defective phone would be a **** move.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] :
I actually intended to disclose the issue and price it accordingly.

As for the copper tape, I wouldn't hold my breath, but for heat dispersion alone it may be worth it.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ssn713:
That's cool but if you read through this entire thread there is clearly more than heat dispersion at play. If you advertise it as anything other than a parts phone you'll be doing a disservice to the buyer.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] urgas:
I find some at ebay

http://www.ebay.co.uk/sch/i.html?_t...pper+tape&_nkw=copper+tape&_sacat=0&_from=R40
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] urgas:
hopefuly for someone will help this info

http://gadgets.ndtv.com/mobiles/new...soon-receive-android-443-update-report-542459
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] jadajada:
Can you tell me how you made that Tasker profile? I have been at it for some time, but I don't know Tasker well enough to create such a profile. Like you, rebooting my phone always fixes the problem for a while. Such a task would be easier since I do not check on mye phone all the time.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] UberTechnophile:
Can't remember exactly right now - but it was something on the lines of if %simstate=0, then reboot after 10 seconds. I've moved to the iPhone 5s since.

Also, this is definitely a hardware issue, I suggest you get a replacement. I eventually got a replacement before giving the phone away to a friend.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Wanabedev83:
Wow looks like it's the motherboard after all, dammit I rebuilt this Phone into a black edition and had everything running perfect on tmobile. I'm gonna have to buy a new phone from a att store unlock it before the 15 days and replace the mother board and return it for a refund with the faulty mother board inside. God what a pain in the ahole to root this thing on NB1 4.4.2 to only end up with this. Hopefully they don't stop selling it by September and theirs no updates either cause i have to leave the country for a month. I know I shouldn't be saying some of what I said but I hate att and any abusive corporation. Dammit Samsung why you have to make the s5 so ugly and wider with practically the same specs?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Stryfex:
Another example

After reading this thread for 11 pages I wanted to add myself as another example of a Galaxy S4 user who's experiencing this problem.

My phone is a 1337M canadian (rogers) phone and the seemingly random SIM card not found issues have been driving me nuts.

Originally this was happening on my stock ROM (with Nova launcher kind of hiding it) and so I flashed Cyanogenmod 11 M7 on hoping for the best....didn't affect the issue and it kept happening. Next step was a new sim card which Rogers gave me for free...no dice, still the issue kept happening. Since then I have completely replaced the SIM/SD reader module and that actually made the problem go away for about 5 days, so I really thought it was the solution, then sure enough it has been happening with regularity again (about 2-10x per day).

This is absolutely driving me nuts
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] s8freak:
I hear ya man its a hair puller for sure I'm super glad I've moved on to my S5

"No soup for you! Come back one year!!"

Sent from my ViSiX powered AT&T 900A
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Stryfex:
After this I don't think I could bring myself to buy samsung again. If I were to buy a phone today I would be getting a OnePlus One...but I'm really trying to avoid buying a new phone due to this issue. I was hoping on getting another year out of it :(
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] justaboutdead:
hey all,

i started having the SIM card issue about a month ago :(

i'm going to have to agree that it's definitely a hardware issue... but i've noticed that for pretty much every time it's happened, i can trace back some abnormal battery and/or network activity to it.

case in point: [IMG="battery stats"]https://i.imgur.com/jt6ECEd.png[/IMG]

as you can see from the graph, battery consumption seems to be quite normal until some change in the mobile network signal (a legend of the network signal colors might be helpful). towards the end of the graph, signal goes red and battery consumption returned to baseline. at the very end of the graph is when i woke my phone up and noticed the "SIM REMOVED" error, and rebooted.

i'm really not sure what this means, but after reading through this thread, no one seems to have every mentioned anything along these lines.

also, while reading through this thread i got the error... i ignored it and kept reading. later, [IMG="looking at the stats"]https://i.imgur.com/TppiBjN.png[/IMG], you can see some activity on the mobile network and my WIFI seems to cut out briefly. i'm not 100%, as i didn't look immediately, but i'm sure that's where the SIM error probably happened at.

i am very upset about this SIM error, because i absolutely LOVE this phone (+ CyanogenMod)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] FluffyCow:
Had this issue as well. Started after the first OTA flash of a 4.4 rom iirc. Tried all the above ideas except the sim tray itself. Finally had AT&T warranty-replace it. No issues since. Their techs said it was an issue with new os versions being flashed and that a re flash with full wipe fixes it. Honestly I feel it's hardware based as I always noticed my phone being red hot (GSam battery monitor reporting 110+ °F temps after reboot..)

New phone came last week and the error hasn't come back.

Both old and new on the latest NC1 AT&T versions.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] chopsxxx:
I think this user has the real workaround for this issue (which has been driving me bonkers on an otherwise great phone). From all my research its

Not a ROM issue

Not the SIM reader or SIM card itself

Not a Sim lock or other software lock issue

Not the motherboard exactly...

IS THE RIBBON CONNECTION FROM sim sub-board to mainboard

Whether its the actual male (mainboard) or female (ribbon) part of the connection is unknown. Probably the clearances on the shell aren't good enough to maintain decent connection over time, and both parts are technically OK, just a design flaw in case.

Its no wonder that a new/refurbished device is the only solution most users have had work for this problem. My device was fine for 8 months out of the box. But I'm willing to bet that the replacement might develop the same issue over time unless Samsung has re-tooled their case design in subsequent hardware revisions.

I've just added some thick paper to the point where the shell should contact the top of the ribbon connector to apply pressure. Fingers crossed, Ill post back in a few days that I haven't seen the error. Currently, its happening pretty much whenever I go for a walk with it in my pocket, which is pretty much all the time. I reboot 3-10Xs / day or whenever I need to make a phone call / txt.