[Q] Help! Invalid Sim Card? Tried everything! - T-Mobile LG G2x

Hey Guys,
I need some help with my G2x. Everything was working absolutely fine with it. I updated, modified the phone etc everything working great. One night, I'm sitting here and I pick up my phone to use it. I notice it says invalid sim card and I have no signal. I figured either T-Mobile had a problem or maybe I just needed to hard reboot. I did that, nothing. It finds the network for t-mobile, but it can not connect. No matter what I do, INVALID SIM CARD. I restore it, INVALID SIM CARD, NVFLASH restore to factory, INVALID SIM CARD. It was working completely fine and then one night it just crapped out and it's been over a month. I can't figure out what to do. I went to a t-mobile dealer today and got a new SIM card, it says the same thing! INVALID SIM INVALID SIM INVALID SIM.
I don't really know what to do at this point, I've tried everything.
I searched all over the forum, heard suggestions from call t-mobile to restore etc but nothing is working here.
My last ditch effort is to try unlocking the phone. I'm waiting for the unlock code now, but I'm really hoping that someone with more experience might know what I'm dealing with here and hopefully lend a helping hand in terms of some advice.
It'd be greatly appreciated. I'm fairly saavy when it comes to recovering bricked phones, etc. but I've never had an APN issue where the APN is good to go and the SIM works in other phones, etc. but not mine including when a t-mobile dealer actually links a brand new sim to the phone and it still isn't working, etc. No clue what's going on but I'm hoping unlocking the phone will help. Any help would be really appreciated.

Sorry to hear that happened. Did u try a different sim?
Sent from my LG-P999 using xda premium

yes no sim card is currently working on it.
I just unlocked the phone, it does not fix the problem.
It continues to say invalid sim card. :-(
---------- Post added at 04:52 PM ---------- Previous post was at 04:19 PM ----------
In the settings menu when I go to APN's it has the t-mobile apn and everything is correct. I go to network operators and ATT, T-MOBILE US and T-MOBILE GSM come up, but when I try to connect to any one of the three it says "unable to connect to this network at this time. Please try again later" I am mystified. I've tried everything I can think of.
---------- Post added at 05:01 PM ---------- Previous post was at 04:52 PM ----------
Another point to make.
When I put in the sim card, even though it's NOT registering to the network and every card says INVALID SIM CARD, I received a notification telling me that I had a voicemail......... when I put my sim card into another phone and called my vm, I did indeed have a v/m.... so I don't believe the phone is shot, I believe something is just very wrong and I don't understand what it is.

You need a new similar, this happened to me, I rooted my g2x and it said invalid similar, if u show T-Mobile they will give u a free one
Sent from my LG-P999 using XDA App

cwa542 said:
You need a new similar, this happened to me, I rooted my g2x and it said invalid similar, if u show T-Mobile they will give u a free one
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
I went to a t-mobile dealer today and got a new sim card. It STILL says invalid sim card.

Go to T-mobile or call get a new Sim card stay until it works are do a phone exchange but stay until they fix the problem your phones is still under factory warranty of they can't fix the problem they violate the contract
Sent from my LG-P999 using xda premium

have you tried a full wipe then flashing a new rom?
simple method to try

Multiple times.
I've NVFlash recovered to stock.
I've flashed multiple different roms.
I'm wiped everything over and over, hard rebooted many times over.
Completely formatted the phone and recovered, etc.
I've tried a million things.
When I put the card in, T-mobile comes up for a second then goes away and says invalid sim card. I went to a t-mobile dealer, they gave me another sim card and it's the same thing. I really just don't know what to do. I feel like I've tried everything.

Do you have another T-Mobile phone, or any unlocked GSM phone, you can use to test the sim card? At least that way you can determine if the problem is with your phone or the actual sim card.
Sounds like an issue with your phone, but its always good to be sure.

phburks said:
Do you have another T-Mobile phone, or any unlocked GSM phone, you can use to test the sim card? At least that way you can determine if the problem is with your phone or the actual sim card.
Sounds like an issue with your phone, but its always good to be sure.
Click to expand...
Click to collapse
Sim works fine in my tablet. both data and voice/etc. it's definitely the phone. I am lost.

deadly1 said:
Sim works fine in my tablet. both data and voice/etc. it's definitely the phone. I am lost.
Click to expand...
Click to collapse
if thats the case, then whats your warranty status?
they can replace the phone for you if the SIM card slot is defective

Unroot make , update to 2.3 if u haven't already and re root
Sent from my LG-P999 using XDA App

Sounds like your baseband code got corrupted or your baseband chip went bad. Restore it and do a warranty swap if you can. No way to reflash baseband at this time on the G2X.

jboxer said:
Sounds like your baseband code got corrupted or your baseband chip went bad. Restore it and do a warranty swap if you can. No way to reflash baseband at this time on the G2X.
Click to expand...
Click to collapse
he might still be able to re flash the baseband via this method, especially if he still has the old one http://forum.xda-developers.com/showthread.php?t=1180331

wyldkard said:
he might still be able to re flash the baseband via this method, especially if he still has the old one http://forum.xda-developers.com/showthread.php?t=1180331
Click to expand...
Click to collapse
Yes, if that works it will flash the new baseband and return his phone to GB stock. Worth a try.

hey guys... no warranty. It's fix it or I'm screwed, unfortunately.
It sounds like you guys identified the problem with the baseband corruption..
I'm going to try and do all methods suggested in the thread including unrooting and updating to gingerbread, rerooting... and also flashing the baseband...
I'll be back with some results!
Thanks for all of the suggestions, I'm obviously hoping I can resolve this!
Thanks again

I got "invalid sim" only when trying to start wifi calling and booting to CWM and wiping the cache and rebooting solved the problem.
If nothing works for you get a new sim card from t-mobile.
T-Mobile also had some funny setting in my account and after several hours with tech support and providing a sim card (phone number) of friend of mine they fixed it. As in ..my phone worked fine with my friends sim card but not with mine.

[HELP] I am having the same issue. I have a T-Mobile G2x/P999. I have had at least 10 roms without issues on the device. I flashed to CM7.0.1.0 stable and bam I have an Invalid sim card, I have tried to unroot, stock flash, NVFlash to stock, trying a different rom altogether with no avail. I have tried NV BAT Flash with NVFLash and nothing. I have found many post about CM7 after of course I flashed mine. My previous sim was new in April of this year, but I went to T-Mo and get a new one today with nothing. I to have wiped, licked, and spanked my phone with no results... CAN ANYONE HELP?? Can't even send it back in because I cant unroot it... HELP!!!!!

firemedic0911 said:
[HELP] I am having the same issue. I have a T-Mobile G2x/P999. I have had at least 10 roms without issues on the device. I flashed to CM7.0.1.0 stable and bam I have an Invalid sim card, I have tried to unroot, stock flash, NVFlash to stock, trying a different rom altogether with no avail. I have tried NV BAT Flash with NVFLash and nothing. I have found many post about CM7 after of course I flashed mine. My previous sim was new in April of this year, but I went to T-Mo and get a new one today with nothing. I to have wiped, licked, and spanked my phone with no results... CAN ANYONE HELP?? Can't even send it back in because I cant unroot it... HELP!!!!!
Click to expand...
Click to collapse
Yikes! Thats taking phone sex to a whole new level ... Did you try removing the battery and sim card, waiting a few seconds and then reinserting and rebooting?
Sent from my LG-P999 using XDA App

Yes I have done everything possible... Before the CM7.0.1.0 rom was installed, my baseband was from March 2001, now it reads July 2011. I have tried to switch back to the prevoius Baseband, but it wont let me either.

Related

[Q] Issue with sim card after using GTG's_Ultimate_Unbrick

I went back to original stock rom because one of my co workers wanted to buy my Infuse to give to his wife. He did not want it to be rooted or have anything on it. I followed the directions in GTG's_Ultimate_Unbrick thread and it worked perfectly. Everything was completely stock like I just opened the box except for one thing...the sim card is not recognized. It says " NO SIM CARD IN PHONE AFTER YOU INSERT THE CARD, PLEASE REBOOT. EMERGENCY CALLS CAN BE USED."
I work for ATT so I know its not because the sim card is bad (I think I tried five new ones today trying to get it to work) plus I used working sim cards from working devices but it still says the same thing.
I tried running through GTG's_Ultimate_Unbrick again but to no prevail. Has any one encountered this or can any one please point me in the right direction on how to fix this issue?
Thank you in advance!!!
seanj1982 said:
I went back to original stock rom because one of my co workers wanted to buy my Infuse to give to his wife. He did not want it to be rooted or have anything on it. I followed the directions in GTG's_Ultimate_Unbrick thread and it worked perfectly. Everything was completely stock like I just opened the box except for one thing...the sim card is not recognized. It says " NO SIM CARD IN PHONE AFTER YOU INSERT THE CARD, PLEASE REBOOT. EMERGENCY CALLS CAN BE USED."
I work for ATT so I know its not because the sim card is bad (I think I tried five new ones today trying to get it to work) plus I used working sim cards from working devices but it still says the same thing.
I tried running through GTG's_Ultimate_Unbrick again but to no prevail. Has any one encountered this or can any one please point me in the right direction on how to fix this issue?
Thank you in advance!!!
Click to expand...
Click to collapse
Did you wipe data/factory reset after unbricking?
If not, try that.
Today around 4:00pm I just had the same problem; however, the problem didn't arise when I used GTG's Ultimate Unbrick... The problem arose when I tried sending an MMS, I sent the first one, it worked, then I had to resend the same MMS to another person, it never sent it, so I tried restarting my phone, and that's when it popped up as "Sim Card Not Found" Ugh!!.. I just tried Flashing it back to stock using Odin GTG's Ultimate Unbrick. I was hoping it was just an ICS random bug, or maybe a just a ROM specific bug. So any help at all would be awesome.
Anyone have any ideas?
sledgeharvy said:
Anyone have any ideas?
Click to expand...
Click to collapse
bump?
did you fix it?

No service after firmware update

So I updated my firmware (I was already superCID'd) and then when I loaded a new ROM I had no service. I have tried many different ROMs, radios and the such but have had no luck. Any advice would be greatly appreciated, thanks!
natehoch96 said:
So I updated my firmware (I was already superCID'd) and then when I loaded a new ROM I had no service. I have tried many different ROMs, radios and the such but have had no luck. Any advice would be greatly appreciated, thanks!
Click to expand...
Click to collapse
I had issues on mine as well, after reflashing it seemed to behave much better. I had a good download verified by md5, the first flash was successful by every indication, but my signal was non-existent or crap at best. After the reflash it just started working better. Give it a try!
Edit: To clarify, I mean to reflash the firmware, not the ROM. I had deleted the P58IMG file from my SD so I had recopy it over to reboot into bootloader to flash it.
mf2112 said:
I had issues on mine as well, after reflashing it seemed to behave much better. I had a good download verified by md5, the first flash was successful by every indication, but my signal was non-existent or crap at best. After the reflash it just started working better. Give it a try!
Edit: To clarify, I mean to reflash the firmware, not the ROM. I had deleted the P58IMG file from my SD so I had recopy it over to reboot into bootloader to flash it.
Click to expand...
Click to collapse
I tried that but it did not work, I dont think it even recognizes that I am on T-Mo because in the settings it says that there are no network operators and all of the network settings are blank.
Have you done a factory reset? I had the APN settings grayed out after flashing a rom. I had to simply go and perform a factory reset and start from scratch. DO NOT ERASE YOUR SD CARD. And make sure you have a rom to flash after you reset your phone.
kpjimmy said:
Have you done a factory reset? I had the APN settings grayed out after flashing a rom. I had to simply go and perform a factory reset and start from scratch. DO NOT ERASE YOUR SD CARD. And make sure you have a rom to flash after you reset your phone.
Click to expand...
Click to collapse
I tried that but it didnt change anything. I am starting to think it might be something with the SIM card or the phone reading the SIM card because in the settings it says "Please insert SIM" and Wi-Fi calling says "Reading SIM" the whole time.
natehoch96 said:
I tried that but it didnt change anything. I am starting to think it might be something with the SIM card or the phone reading the SIM card because in the settings it says "Please insert SIM" and Wi-Fi calling says "Reading SIM" the whole time.
Click to expand...
Click to collapse
Do you have another SIM to try? The TMo stores usually are helpful with stuff like that.
Still though, this sounds awfully familiar. I do remember reading something similar about the SIM not being recognized a couple weeks ago when the ICS ROMS first came out but can't remember what threads. Do some forum searches on missing SIM, SIM not recognized, stuff like that and see if anything looks helpful.
Edit: Can't seem to find it now. The only other things I can think of to try is to power off, remove the SIM, power up, let it boot completely, then power off, replace the SIM, and power back up. If that doesn't work, I would try flashing an appropriate RUU from here. Be careful to pick the right RUU for your area and carrier. To flash the RUU, just connect the USB plug from your PC to the phone and doubleclick the RUU exe file to start. It should find the phone and do everything necessary, firmware, radio, partitions, etc. and put you back on a stock ROM. You can flash CWM or 4EXT recovery and then whatever ROM you want.
The one I remember reading about, the guy replaced the Sim card and it fixed his no service issue.
galaxys said:
The one I remember reading about, the guy replaced the Sim card and it fixed his no service issue.
Click to expand...
Click to collapse
Yes I remember replying to that thread as well. That guy bought that phone on craigslist or something and used his old sim, not the sim that comes with the phone itself.
Go to a tmo store/kiosk at the mall and ask to test out a different sim for the phone and see if that works.

[Q] Sim won't recognized :(

Hi Guys,
I just bought an infuse last night off from craigslist. I checked the phone thoroughly before I bought it and everything is working fine. When I get back home, the phone signal keeps dropping on and off so I thought the sim card might be loose. So I took it out and reinsert the sim card. Boot back up and the phone won't recognized the sim anymore. Keep seeing please insert sim even though the sim card is in there and worked fine earlier. I reset it to factory default but no luck. I put the sim in different phone and it's working fine. I tried with different sim card from my friend's phone who has galaxy s 2. The phone detected the sim but no signal at all. I reboot, factory reset but no luck at all.
The phone has CM7 rom and when it was working, it was great. Is there any way I can fix it? I checked the phone on samsung warranty info and it's only 3 months old, so still under warranty. I don't know they will honor warranty though since I bought it off from craigslist. Is there anyway I can fix it? Please help me. Thanks a lot.
Reset to stock and see if that helps. Try using some other working sim and check if the problem persists.
I have already factory reset it. Tried with 2 different sims. One sim recognize but no signal. Should I flash back to stock rom and try?
mutantblack said:
I have already factory reset it. Tried with 2 different sims. One sim recognize but no signal. Should I flash back to stock rom and try?
Click to expand...
Click to collapse
I would flash back to stock via Odin or heimdall and see if the problem is resolved....
Sent from my SAMSUNG-SGH-I997 using XDA App
I just flashed back to stock with heimdall. I will test out and report back. Thanks.
edit. Doesn't work even after flashing back to stock rom. Sending it out to Samsung for warranty repair. Thanks.

No 4G at all

I have an s3 that I flashed to CM10, AOKP 6 and I also tried synergy. I cannot seem to get LTE on the first 2 adn with synergy, I can only get it by using the phone info thing and switching to an LTE ONLY mode. I noticed when I was stock I didnt see it going to LTE either. is this a problem with it switching over or what? When I try to switch to the LTE ONLY mode on the other 2 roms, I get no connection at all.
Any ideas? Is the phone toast? I am an experienced flasher, as I am coming from a galaxy nexus lte and am a crack flasher. Before each rom, I wiped data, cache, dalvik and system.
anyone have ideas? I am at a loss.
thanks
edit: I also noticed that on CM10 and AOKP the activation fails, and I can skip it. My phone number shows up as unknown but I have an IMEI number
*#*#4636#*#*
Change to CDMA/LTE Auto
I did that and I noticed no change. I only have 3g
SAME THNG!!
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
dougmod said:
i did that and i noticed no change. I only have 3g
Click to expand...
Click to collapse
e-zzy1 said:
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
Click to expand...
Click to collapse
i had to get a new sim card. i went to the store and the new sim fixed it all
dougmod said:
i had to get a new sim card. i went to the store and the new sim fixed it all
Click to expand...
Click to collapse
I'm having the same problem, I think. When I switch to an LTE option in phone info, it doesn't stay that option. it goes back to CDMA auto.
Can you just go to the verizon store and ask for a new one? Do they need to see your phone or anything like that, that will tell them its rooted?
raisins said:
I'm having the same problem, I think. When I switch to an LTE option in phone info, it doesn't stay that option. it goes back to CDMA auto.
Can you just go to the verizon store and ask for a new one? Do they need to see your phone or anything like that, that will tell them its rooted?
Click to expand...
Click to collapse
I was afraid and flashed back to stock before taking it in, but the sim card thing is common. so just say you were told by customer service to come in and get a new sim and they will set you up. if you dont feel like going to the store, customer service will overnight you one, pretty much no questions asked. so its no big deal
This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3
DROID3R said:
This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3
Click to expand...
Click to collapse
after flashing back through odin, I still had only 3G
DROID3R said:
This is a common problem... i had it too with synergy 1.2. The phone info app was stuck gets stuck on cdma . I had to flash the stock image through odin and flash synergy again. No new sim cards are required
VERIZON GALAXY S 3
Click to expand...
Click to collapse
When you do that, do you wipe all your data?
raisins said:
When you do that, do you wipe all your data?
Click to expand...
Click to collapse
Check your baseband then head to
http://forum.xda-developers.com/showthread.php?t=1788313 then flash a different radio.. meaning if you running LF2 then flash LG1 and vice versa. After i changed the modem i boot up into 3g went into phone info and chose lte only and 4g turned on.
When it happened to me i was running synergy (LG1-radio)...jellybomb theme..so there must be an issue there . i think its the jellybomb theme since it was made for sprint users
VERIZON GALAXY S 3
e-zzy1 said:
I have the same problem and can't seem to find a solution!!!!
I have two s3 and they both do the same thing!!!
Click to expand...
Click to collapse
Pop up dialer, type *2767*3855#
and it will reset your 4G by fixing the SIM card - and immediately reboot. I've had the problem twice, and both times this key sequence fixed it. :highfive:
So a friend of mine was having the same issue. No 4G in an area I know he has full 4G signal. I reflashed the unrooted stock image in Odin (he was already stock, rooted, unlocked with cwm 6.xx) and still no dice. I tried flashing both radios, no dice. Also tried the dialing above to reset everything, nothing. Finally I gave up and told him to take it in into a store and they replaced the sim card and it worked! We then rerooted, unlocked, flashed cwm and all was good.
However, I asked him what all he had originally done after getting the phone so that we could try to take it step by step and see what caused it. I installed TiBu and lucky patcher as he had previously done (I don't condone pirating, espeically this great app but I wanted to try and recreate the issue) and it broke it, no 4G! I think the culprit was lucky patcher; I highly doubt TiBu could cause it as I have had no trouble with it. Only other rooted app he installed was adblock but again, I use this all the time with no troubles. I told him to just pay for the app! But I am still interested if anyone else might have had the same issue so we could try to prevent it for others? Any of you above who lost 4G did you by chance use lucky patcher?
Edit: Also, i noticed that I put the phone in 4G LTE only mode using phone info the 4G LTE symbol pops up but there are no signal bars. However, it appears as if there is signal since data speeds work fine and at normal LTE for this area so just the bars are screwed up, and then something with the hand off when switching back to normal off LTE only? Anyone else exeriencing this or have you tried to see if you actually have LTE even though you have no bars?
Same crap on my white 16gb gs3. Ridiculous data connections.
---------- Post added at 03:50 AM ---------- Previous post was at 03:42 AM ----------
I have a replacement coming. They sent it a week ago and I got it yesterday and they sent me a nexus. Maybe its a sign to go back to the good ol gnex. They resent a gs3 so if the new one doesn't fix it I'm going to keep the gnex they sent and cut my loss
Sent from my SCH-I535 using xda app-developers app

lost imei after reboot with cm10 20120927

Loaded cm10 20120927 last night and all ran good. no data drops or anything. i ram cyanogenmod backup this morning and on reboot no imei or anything. good that i backup it up to my sdcard and to dropbox.
if one of the MODS would like to move this to the development forum thats ok. i know that if wouldn't matter because cm10 probably didnt cause the imei loss.
Edit: I took a chance and rebooted again hoping that it was just something sbout the reboot and imei, phone number etc etc is back. Good for me, but not sure I have read of this happening. Anyway, all is good now.
ef-civic said:
Loaded cm10 20120927 last night and all ran good. no data drops or anything. i ram cyanogenmod backup this morning and on reboot no imei or anything. good that i backup it up to my sdcard and to dropbox.
if one of the MODS would like to move this to the development forum thats ok. i know that if wouldn't matter because cm10 probably didnt cause the imei loss.
Edit: I took a chance and rebooted again hoping that it was just something sbout the reboot and imei, phone number etc etc is back. Good for me, but not sure I have read of this happening. Anyway, all is good now.
Click to expand...
Click to collapse
Did you not back up your IMEI via ADB?
stargate125645 said:
Did you not back up your IMEI via ADB?
Click to expand...
Click to collapse
yes I did
I'm not sure why you made this thread though if you had your imei backed up and it came back after a reboot. I lost mine 3-4 times and it came back each time after a reboot, I never had to recover from my backup yet though.
Installed JB ROM on S3 Verizon - not connecting to network
Any suggestion on how to fix this this issue.
I install a JB rom last night, but it seemed like it deleted the IMEI number off the phone. Through the forums, I was able to restore ( I didn't not back Up IMEI - i know) the IMEI number back on the cell phone.
However, the phone is unable to register to the Verizon network. I have an inside Verizon guy, who helped associate, on his end, my IMEI number to my account/ sim card. still not connecting. has any one else got this problem, and able to resolve?
I should be getting a new Sim Card tonight, hoping that might resolve the issue, if not, I will call Verizon Warranty to get a new phone.
PS. on verizonwireless, it shows that Samsung S3 is associated with my SIM/ telephone number.
thanks for any suggestion or help in advance.
jaimanny said:
Any suggestion on how to fix this this issue.
I install a JB rom last night, but it seemed like it deleted the IMEI number off the phone. Through the forums, I was able to restore ( I didn't not back Up IMEI - i know) the IMEI number back on the cell phone.
However, the phone is unable to register to the Verizon network. I have an inside Verizon guy, who helped associate, on his end, my IMEI number to my account/ sim card. still not connecting. has any one else got this problem, and able to resolve?
I should be getting a new Sim Card tonight, hoping that might resolve the issue, if not, I will call Verizon Warranty to get a new phone.
PS. on verizonwireless, it shows that Samsung S3 is associated with my SIM/ telephone number.
thanks for any suggestion or help in advance.
Click to expand...
Click to collapse
There's a link in my signature for "IMEI Repair" click that and you can fix the problem
jaimanny said:
Any suggestion on how to fix this this issue.
I install a JB rom last night, but it seemed like it deleted the IMEI number off the phone. Through the forums, I was able to restore ( I didn't not back Up IMEI - i know) the IMEI number back on the cell phone.
However, the phone is unable to register to the Verizon network. I have an inside Verizon guy, who helped associate, on his end, my IMEI number to my account/ sim card. still not connecting. has any one else got this problem, and able to resolve?
I should be getting a new Sim Card tonight, hoping that might resolve the issue, if not, I will call Verizon Warranty to get a new phone.
PS. on verizonwireless, it shows that Samsung S3 is associated with my SIM/ telephone number.
thanks for any suggestion or help in advance.
Click to expand...
Click to collapse
Reprovision on the stock rom.
con247 said:
Reprovision on the stock rom.
Click to expand...
Click to collapse
This! Dialer code *2767*3855#
droidstyle said:
This! Dialer code *2767*3855#
Click to expand...
Click to collapse
yup, that worked. I thought I did that earlier with my verizon guy. Maybe it took time to sync up..
anyway thank you for your help.
thanks con247, and droidstyle.

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