Database Develop

[Q] No SIM card recognized

Had a look through the forums already looking for pointers, as well as a good few hours of Google-fu, so now I'm posting.
My Nexus decided, last night, my SIM wasn't inserted. This was while I was playing with my settings (I ticked allow national-roaming, went into Airplane and out, and then it happened). I undid my changes, but no, SIM not inserted.
I've soft-rebooted countless times, reseated the SIM, cleaned the contacts, checked other SIM cards, checked the SIM in other phones, restored a known-to-be-working backup of my OS, and as I type this out, I'm flashing a clean copy of a ROM with all my settings wiped. I expect it to be finished by the time I complete this sentence.
Yes, finished. And still no luck. Where do I go from here?

The only thing I can think of is to try passimg just because it's a stock ROM, if that doesn't work then I think I we can assume it's hardware.

Old topic, but this turned out to be hardware in the end, and was fixed by HTC under my provider warranty.
Sent from my Galaxy Nexus using XDA App

Nice
Sent from my LG-P925 using XDA App

About ready to give up, lol. Hopefully someone can help!!

I know I have other threads on this but decided to give all my symptoms and what I have done up till now in one thread.
Ok, so to begin........ I had the power button problem on my Captivate as well as other problems, phone would get hot and smell and do weird things. So I decided to buy a broken phone off ebay and change out the motherboard.
I swapped boards and the new board had a lock on it so I couldnt get into the phone so I restored it to factory defaults. After that I was able to get into the phone and it works great except for the fact it will not connect to the network! So I have a camera and a wifi device.
Here is a list of problems I see.....
When phone boots up without sim card it doesnt ask for a sim card to be inserted
when sim card is inserted it doesnt read it (card and card holder work fine on other motherboard)
No network but wifi works fine
Baseband version - unkown
phone number - unknown
mobile network type - unknown
service state - out of service
mobile network state - disconnected
imei - unknown
imei sv - unknown
I have tried pretty much everything I have read on the forum....
Rooted phone and installed a custom rom and corn kernel - no luck
Mobiletechvideo method - no luck
moved efs folder from old motherboard to new motherboard - no luck
did a CWM backup on old motherboard and copied it to new motherboard and ran CWM recovery - no luck
tried Galaxy S unlock and no matter what I do only get the FFFFFF code
Flashed other modems - no luck
in hex editor my nv_data.bin files look fine.......
00188008|2e|34|00|00|00|00|ff|41|.4....A
00188010|54|54|00|00|00|00|53|47|TT....SG
00188018|48|2d|49|38|39|37|5a|4b|H-I897ZK
00188020|41|41|54|54|00|00|00|00|AATT....
So anyway, Im at the end of my rope so hopefully I can get some insight before I just give up (which I keep saying I'm going to do but havent yet, lol)
Thanks!

It may not matter, but have you tested someone else's SIM card in the phone that's not detecting yours? If it won't read two different cards, but all the software parts are looking like they're functioning correctly, it's possible you have a lemon SIM card reader.
I don't know if that's something that could be replaced, but if you test it and it won't read the second card, it might be worth getting in contact with Josh (connexion2005) at mobiletechvideos to see if replacing the SIM card reader is something they can do.

jmtheiss said:
It may not matter, but have you tested someone else's SIM card in the phone that's not detecting yours? If it won't read two different cards, but all the software parts are looking like they're functioning correctly, it's possible you have a lemon SIM card reader.
I don't know if that's something that could be replaced, but if you test it and it won't read the second card, it might be worth getting in contact with Josh (connexion2005) at mobiletechvideos to see if replacing the SIM card reader is something they can do.
Click to expand...
Click to collapse
Yes I have tested other sim cards and they dont work either. I had thought of this too but I put the sim card reader/holder on the other motherboard and it reads fine.

Here's an interesting twist......
started looking around in root explorer and looked at dev/block, only folder in there is dev/block/void and it is empty. Maybe this could be the cause? If so anyone know how to fix it, lol

This very well may be a modem defect. Do you have the background story for how it became this way?
Sent from my GT-I9300 using xda premium

connexion2005 said:
This very well may be a modem defect. Do you have the background story for how it became this way?
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
It was a phone with a broken screen I bought off ebay, took the motherboard out and put it in my phone which has a bad motherboard. Hasnt worked since I switched it out so that as far back as I can go. If it was a modem defect would the wifi still work?

[Q] Any software that would mess up modem to prevent signal?

Before I buy another used Captivate to swap motherboards, I'd like to know if there's anything else I should look at.
Scenario: Bought used Captivate with bad USB port and running CM9 Beta. Once I finally got my SIM card, I had no network signal (couldn't even find any operators when you search for them). Redid the APNs multiple times though those seem to be for Internet and MMS rather than cell. Wifi works fine. Flashed to CM 9.1 stable. No difference. Verified phone is unlocked. Verified IMEIs match. Verified baseband was listed. Verified my phone # is listed. Flashed to CM 7.1. No difference. I wanted to flash to stock but can't because Mobile Odin won't work with CM's partition layout. Thus, it seems I am stuck with CM or MIUI.
Is there anything in efs or another system directory that could prevent me from getting a signal?

topshot said:
Before I buy another used Captivate to swap motherboards, I'd like to know if there's anything else I should look at.
Scenario: Bought used Captivate with bad USB port and running CM9 Beta. Once I finally got my SIM card, I had no network signal (couldn't even find any operators when you search for them). Redid the APNs multiple times though those seem to be for Internet and MMS rather than cell. Wifi works fine. Flashed to CM 9.1 stable. No difference. Verified phone is unlocked. Verified IMEIs match. Verified baseband was listed. Verified my phone # is listed. Flashed to CM 7.1. No difference. I wanted to flash to stock but can't because Mobile Odin won't work with CM's partition layout. Thus, it seems I am stuck with CM or MIUI.
Is there anything in efs or another system directory that could prevent me from getting a signal?
Click to expand...
Click to collapse
I've been with you on another thread so I know for a fact you've tried all that stuff. But I don't recall did you ever try to flash an new or different modem? If you haven't or just want to try a new one I attached the one I use. Or I can get you the link to a page with a whole lot of others to choose from.
Other than trying a new modem I'm at a loss as to what it could be besides hardware at this point. Btw were you ever able to test your sim card in another phone to make sure it's functioning? Or do you know anyone with an att sim that you could test your phone with?

Things you could try:
1. Turn the flight mode on and then turn it off and see if that helps.
2. Open the phone and see if the antenna's contact points are okay.
3. Open the nv_data.bin in efs directory and see if the value at the offset(you can search for the exact value) that stores the network lock flag is 00. If it is 01 then it is still locked. I know you checked for the lock already but it never hurts to double check. You could also take a look at nv.log and see if there is anything there at the end that might be helpful. You could also check for lock by dialing *#7465625#.

m1batt1 said:
Other than trying a new modem I'm at a loss as to what it could be besides hardware at this point. Btw were you ever able to test your sim card in another phone to make sure it's functioning? Or do you know anyone with an att sim that you could test your phone with?
Click to expand...
Click to collapse
My next move was to flash some other modems actually, but I may wait until after tomorrow (see below). I tried to swap with my SIL who is on the same service but her phone takes the micro SIM. I'll try again Wed night with another choir member that has an ATT S2 I think.
uhm said:
Things you could try:
1. Turn the flight mode on and then turn it off and see if that helps.
2. Open the phone and see if the antenna's contact points are okay.
3. Open the nv_data.bin in efs directory and see if the value at the offset(you can search for the exact value) that stores the network lock flag is 00. If it is 01 then it is still locked. I know you checked for the lock already but it never hurts to double check. You could also take a look at nv.log and see if there is anything there at the end that might be helpful. You could also check for lock by dialing *#7465625#.
Click to expand...
Click to collapse
1. No help.
2. Where are the contact points? I've not found any schematic or disassembly instructions for this phone. I can see the external antennae connector, of course.
3. That was how I verified it was unlocked. All the bits in the appropriate area were 00. I'll have to look at the log file.
How would I dial any service code with no service? It tells me "mobile network not available" once I hit the Phone button.
New Info
I'm really hoping this is the answer to all my headaches the past several days trying to figure out why this phone won't get service. I just spent the past hour on the phone with my OLD carrier trying to re-activate my OLD phone with a different number to give to my son. We had to jump through a bunch of hoops because my old line was still "suspended" because of the port order. It is due to be "deleted" tomorrow. So even though my NEW carrier said activation was complete and my OLD phone stopped making and receiving calls 8 days ago, could the fact my number has been "suspended" be the reason I can't see any GSM networks?

Sadly my SIM worked in another phone but his didn't in mine.
Looks like I have a mini netbook.

topshot said:
Sadly my SIM worked in another phone but his didn't in mine.
Looks like I have a mini netbook.
Click to expand...
Click to collapse
Any luck changing modems?
Sent from my SGH-I897 using XDA

m1batt1 said:
Any luck changing modems?
Click to expand...
Click to collapse
I flashed back to CM 9.1 and then flashed in XXJVU - 12/28/2011

are you getting a good signal strength? that would veify antenna is okay.
Sent from my SAMSUNG-SGH-I897 using xda app-developers app

laughingT said:
are you getting a good signal strength? that would veify antenna is okay.
Click to expand...
Click to collapse
I'm not getting ANY signal. It always shows -110 dbM or less and 0 or 1 asu. The seller said the GPS worked fine, but I don't get a lock on that either (but maybe you need to "fix" the GPS with each ROM flash?). I've only been concerned with cell service at this point.
I'm going to pick up another Captivate in another hour. I'd like to root and unlock it right there to make sure it works, but don't think I'm that good yet to do quickly and safely. Assuming it's running KK4, the Easy Root pgm seems simple enough to root. May also try SuperOneClick.
For unlocking, I'd hoped to use Galaxy_S Unlock, but couldn't figure out how to get it onto my micro SD card to load onto the other phone.

The "new" Captivate works. It came with KK4 and a good USB port. I'll flash something onto it soon once I learn how to properly back up everything.

glad your new one works.
re: old phone gps. i think you may need to edit gps.conf in etc folder to set gps mode to standalone, rls the gps wants a network connection. in standalone mode, expect a v long time to lock, like 15 minutes.
Sent from my SAMSUNG-SGH-I897 using xda app-developers app

topshot...
While u r on kk4 see this post for gps fix... http://forum.xda-developers.com/showthread.php?p=19422197.
Sent from my SAMSUNG-SGH-I897 using xda premium

If you start the phone without a sim card in it, does it detect its absence and vice versa too? If that functions properly then another possibility could be that the IMEI of the phone might be blacklisted. It might have been reported as stolen. You could call your carrier to find that out.

uhm said:
If you start the phone without a sim card in it, does it detect its absence and vice versa too? If that functions properly then another possibility could be that the IMEI of the phone might be blacklisted. It might have been reported as stolen. You could call your carrier(AT&T I suppose) to find that out.
Click to expand...
Click to collapse
Yes, it detected whether a SIM was in it or not. When I had signed up for the new service it had said the IMEI was OK. I guess that doesn't mean it stayed that way. I would think that would just prevent you from accessing the service, not prevent you from detecting a signal at all. When I picked up the second used Captivate, his SIM card had been deactivated, but it still showed it was getting a signal.

topshot said:
Yes, it detected whether a SIM was in it or not. When I had signed up for the new service it had said the IMEI was OK. I guess that doesn't mean it stayed that way. I would think that would just prevent you from accessing the service, not prevent you from detecting a signal at all. When I picked up the second used Captivate, his SIM card had been deactivated, but it still showed it was getting a signal.
Click to expand...
Click to collapse
Once I had my efs folder deleted while flashing a rom and my IMEI defaulted to some value and it showed no signal at all. I checked IMEI and realized it was a different one and that led me to look at the efs. Once I restored the efs folder from my back up, all was fine again. Therefore I think if your IMEI is blacklisted it could happen and hence made that suggestion to call your carrier. Your carrier might also be able to tell you if your phone made any attempts to register on their network or not.

[Q] Can't set APN, and other SIM problems

Hello,
I have problem with SIM card on my phone. I'm using Temasek's CM 10.1, Kowalski kernel, and V20I-EUR-XX baseband. When phone boots, I normally input my PIN, but it doesn't connect to network, I have to go to Mobile networks and Choose operator automatically, then it connects. I can call and send messages normally, but when the call hangs (me or the other side) it says SIM card error (something like that). Also I can't save APN. In APN settings there is nothing, and when I create APN manually, I input everything and press save, but it doesn't stay, APN's remain empty. I use micro-SIM with adapter, because my operator couldn't get me normal SIM at a time. I'm on Croatian provider VIP. Everything normally worked with micro-SIM from Tele-2 provider (although on CM 10, and CM 7, didn't test it on CM 10.1).
Is it related to my SIM card or SW (ROM or baseband)?

mind_challenge said:
Hello,
I have problem with SIM card on my phone. I'm using Temasek's CM 10.1, Kowalski kernel, and V20I-EUR-XX baseband. When phone boots, I normally input my PIN, but it doesn't connect to network, I have to go to Mobile networks and Choose operator automatically, then it connects. I can call and send messages normally, but when the call hangs (me or the other side) it says SIM card error (something like that). Also I can't save APN. In APN settings there is nothing, and when I create APN manually, I input everything and press save, but it doesn't stay, APN's remain empty. I use micro-SIM with adapter, because my operator couldn't get me normal SIM at a time. I'm on Croatian provider VIP. Everything normally worked with micro-SIM from Tele-2 provider (although on CM 10, and CM 7, didn't test it on CM 10.1).
Is it related to my SIM card or SW (ROM or baseband)?
Click to expand...
Click to collapse
Not sure if you read my post, but I think we are having the same issue regarding the APN, etc.
Not been able to solve mine yet, perhaps together we can put out enough info that someone here can offer a solution? I haven't changed the baseband or kernel on their own, only went from stock 2.3.3, to CM10.1, then to CM7.2.
Are you able to remove the SIM PIN? If you remove the SIM PIN from security, are you able to save APN?
Does your phone access data with the native SIM card the phone was originally locked to?

gglobal19 said:
Not sure if you read my post, but I think we are having the same issue regarding the APN, etc.
Not been able to solve mine yet, perhaps together we can put out enough info that someone here can offer a solution? I haven't changed the baseband or kernel on their own, only went from stock 2.3.3, to CM10.1, then to CM7.2.
Are you able to remove the SIM PIN? If you remove the SIM PIN from security, are you able to save APN?
Does your phone access data with the native SIM card the phone was originally locked to?
Click to expand...
Click to collapse
It seems that PIN is already disabled in Settings-Security-SIM card lock settings :silly:
I called my old operator and they told me my phone was sold locked, and new operator told me they can't help because I didn't buy the phone from them. But then how it works now for calls and messages?
I don't have any other SIM with me so I can't test it with my phone. You say going back to CM7 didn't help? I guess I shouldn't try that then.
Maybe flashing stock ICS would? Any other suggestions?

mind_challenge said:
It seems that PIN is already disabled in Settings-Security-SIM card lock settings :silly:
I called my old operator and they told me my phone was sold locked, and new operator told me they can't help because I didn't buy the phone from them. But then how it works now for calls and messages?
I don't have any other SIM with me so I can't test it with my phone. You say going back to CM7 didn't help? I guess I shouldn't try that then.
Maybe flashing stock ICS would? Any other suggestions?
Click to expand...
Click to collapse
I haven't tried stock ICS yet; maybe it would? I will try that tonight.
Mine shows the SIM PIN on, when I try to change it it asks for my old code, which I don't have of course, so I can't remove the security. Been hoping that someone else would have had experience or knowledge of what would cause the problem and have a solution or suggestion to try. The closest I came was on a different forum about a Sony Ericsson phone, but the rooting and flashing procedures are so much different I couldn't see a solution in it, though they suggested flashing the baseband iirc.
HMMMM, now that I read your reply, I can't say with 100% certainty that the phone was unlocked before I rooted and flashed CM10.1.....I had thought it was but perhaps it wasn't, and we are having a more similar issue than I thought. So the glitch, perhaps, is that it was not unlocked, the custom ROM somehow "half" unlocked it, and here we are stuck.
Okay, my only thought then is to take it back to stock everything, the most up to date I can find, then unlock it with code, and see if I can change the APN at that point. If so, I will root it, use My Back Up Root to save settings including APN (just in case so at least I can restore it that way if I can't do it manually, after)flash CM10.1 again or another fabulous custom ROM which is what I really wanted in the first place
I will try that tonight, and post you the results. Let me know if you have any (better) suggestions as well, I'm up to try almost anything at this point. Was hoping to upgrade to this for my daily phone as I'm limping along with a Acer Liquid MT that has seen better days
If anyone has a link to quickly point me towards the latest stock ROM etc. and wants to post here, I would be much obliged Might save this noob a few hours scratching his head to find what is most certainly in front of my nose already, but I digress...
Cheers

New baseband
I just flashed V30A baseband, and it didn't help. We can cross that from the list.

Well colour me confused...and happy?
I just today picked this project up again, about to attempt a different fix, again...*sigh.
Lo and behold, i insert my sim and power on the phone, and it asks me for network sim unlock.....odd because I'd used the phone with this sim before, through all my other testing, flashed different roms, etc. etc. In fact, I've used the phone on this very package, I know because there are sms messages on the phone from using it. Battery pull, remove sim and check, yup sure enough, old messages there. Hmmm...
Insert sim, reboot, asks for unlock code again. Well, what have I got to lose at this point right? As I said before, I THOUGHT I had unlocked the phone before starting this whole debacle, but wasn't 100% certain about it. Searched my email for the code since I always save them, couldn't find it. Well, in for a penny, in for a pound I suppose. Bought a new unlock code, waited for it to arrive. Input new unlock code, unlock successful!!
Reboot phone....waiting for service....(this seems like forever!!! In reality, less that 60 seconds.) Alas, I have service. And now, just to tempt fate, Apps->settings->wireless & networks->more->mobile networks->access point names..........:fingers-crossed:
I can hardly believe my eyes, there it be, Rogers Internet apn selected. It even auto-detected the damn thing!!
I can offer no further insight, I don't believe I physically did anything to arrive at this remedy. But there you go, for my part at least it's solved.

[Q] Can't make calls, connect to data, APN looks normal

I was trying a different rom and decided to return to stock. I restored a nandroid in SS but now I can't make phone calls or connect to mobile data. I checked the APN settings and they look fine. Any ideas? Thank you.
Edit: Phone sometimes doesn't recognize SIM card and won't let me into APN settings, but does after reboot. Still, no non-wifi features work.
Edit2: Every 10th reboot seems to make the SIM functions work for a while (10min-2hours, three times total) before it stops. I didn't buy a warranty, so I guess it's time to start saving up for a nexus.

Did you use a TouchWhiz ROM? ASOP ROM's are not working right for a locked bootloader like AT&T.
What are you using right now 4.4.4? There should be a way to fix this with a bit more information. Not say that person is me lol, but at least I could help steer you in the right direction perhaps.
Lots of smart people here to help.

It's looking like a problem with the SIM port. Unplugging and reinserting the card, it works for a couple hours every few tries. I'm still trying to decide whether or not to replace it and attempt a self-install or buy a new phone. Thanks for your concern.

jerrys0828 said:
It's looking like a problem with the SIM port. Unplugging and reinserting the card, it works for a couple hours every few tries. I'm still trying to decide whether or not to replace it and attempt a self-install or buy a new phone. Thanks for your concern.
Click to expand...
Click to collapse
Odin back to NCE that'll fix it