Tech Global 101
Where Technology Meets The World.
How To Solve “No Service” and “No Imei” on Samsung Galaxy S3.
Hello guys some few months back i happened to flash a custom Rom on my T-Mobile Galaxy S3 and when on the Rom it was all good i had network and stuff but later on i decides to switch back to the stock Rom. After doing so my S3 lost network and so at first i thought it was a sim card problem but later after trying different sim cards i discovered that it was an issue with the phones software i had lost some internal applications(as i may call them)
Later i started searching for guide on how to return my phone’s network since i couldn’t do anything with it except listen to music but nothing concerning data usage, I even made a YouTube video(even thou it was too shady) noone responded to it. No worries if you happen to have the same problem if you found this page then your phone is all well. Thanks to a few forums that helped me and later found all the solution to my problem now i’m gonna help everyone in need. I don’t have a video for the procedure i never made one but i feel bad i didn’t cause its many people who are in need with no service next to gabage Galaxy S3s.
I will make sure i explain everything clearly.but first you will need to download the following application
INSTRUCTIONS:
1) Download NV reader/writer here and install these drivers.
2) Dial *#7284# and select “Qualcomm USB Settings” then check “RMNET + DM + MODEM“.
3) Create backup.
a) Click “port” in the top left and select your samsung serial port.
b) Make sure BOTH boxes in the top bar are checked.
c) Click “Connect” in the top bar.
d) Click “Read” in the top bar.
e) Click “Read” in the lower ‘NV-items’ section.
f) Save the .txt file, this is your backup
*The process will take 5-10min. The file size will be roughly 3mb and “inactive item” and “bad parameter” sections are normal.
*To restore click “Write” in the lower ‘NV-items’ section and navigate to your backup file.
4) Dial *#7284# and select “Qualcomm USB Settings” then check “MTP + ADB“.
Demonstration video HERE << Thanks to moonfire for the video.
IMEI ALREADY CORRUPT?
Use THIS custom built tool to easily generate a backup file with your properly formatted IMEI to restore your phone!
1) Enter your IMEI (find it behind your battery) in the text box up top, hit generate then hit save.
2) Use “NV-Item reader writer” to write the saved text file back to your phone and then reboot.
For more on The same topic you can go to Xda-developers here
and also there is a popup notification that is quite disturbing called The Factory Mode you can disable it through this method.
First, download ROM Toolbox from the market or online and install manually here here
Second,In Root Browser, navigate to efs/FactoryApp/ (It will ask for root access, allow it)
In this folder there will be a file named factorymode. Click it, then click Open as…
Choose Text file, then choose RB Text Editor. This will open it as a text file. Here’s where it gets a bit confusing. If it says “OFF” (which yours will), that means it is showing the annoying box on your home screen, like this:
But if you change it to say “ON” then save and reboot, no more annoying box!
Remember, whether you are enabling or disabling it, you have to reboot for the changes to take effect. Enjoy!
I hope this helps. If it don’t or you are stuck feel free to leave a comment be and will see how i can help you.
do u have any video to show it, well i didnt get it what did u said
No i don’t have a video i didn’t record any the time i was solving the problem. What part don’t you understand, i see if i can help?
could u please contact me oover skype or whatsapp thank you!
skype: seqsyz whatsapp : 004917654717723 I need your help please.
am working on it now i will send you a link
Use THIS custom built tool to easily generate a backup file with your properly formatted IMEI to restore your phone the file can’t be downloaded ! Please send it to me via email at revolver_45_silver@yahoo.com
hello i will email you asap
can you please send it to me aswell @ bvsapkota@hotmail.com
thanks
i can not download sgs3.nv.gen.zip and i need it bad can u please email it to me at jameslonghi324@gmail.com
Please email it to me as well. I need it badly.
perwezabbas@gmail.com
Regards,
Perwez
Hi
I did not find “Qualcomm USB Settings” then check “RMNET + DM + MODEM“ in step 2 !! I found (UART=> Modem or PDA and USB=> Modem or PDA) what should I do ?
choose from pda then change from the normal MTP+ADB to RMNET + DM + MODEM. You should be able to view it on your computer ports section
I don’t understand i have selected as you said pda from both UART and USB but still the same screen appears when i type *#7284#! What should i do?
I am facing the same situation. If you come across any solution please do mail me….Thanks in advance.
perwezabbas@gmail.com
download terminal emulator and run the following command.it will lead you directly to the qualcomm settings page
su -c ‘am start -n com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings’
you have to be rooted for this to work
THE IMEI Tool is not working. Do you have another link? I just bought a phone with a corrupt IMEI and Its useless.
No my friend its not useless, thought so topo until i got my amnswers. i will send you a link to a working Imei tool
hi i bought a tmobile phone with a bad iemi for nonpayment, i can not return it so is it useless now nad am i sol ?
sorry for the late reply but if you follow the procedure i gave above you will get it working
I would like a tutorial on how to connect NV Reader/Writer to my phone. It’s an SGS III International, (i9300). I have a corrupt IMEI, and can’t get it to authenticate on the network. My IMEI is 004999..,,0000 Any help?
Please send me link as well. Having same problem…..Thanks a lot
Perwez
@techglobal101..i had imei but my serial show only 0 and i cant connect to network too..do u have any solution please help ?
yes, through the above process you should gain back your network but im making a video showing you how to go through about it
the secret menu is different on mines…theres like 4 options modem and pda, under uart and modem and pda under usb… whay should i do?
use pda one
hi,
i have been through the steps when i get to in nv reader and click read
its comes up with Failed..phone does not answer
any help i have a no IMEI
first you need ton inject your imei into your phone then do that step
Can you please expand upon “inject your imei” first? I thought using NV-items writer was injecting, but it can’t because the phone doesn’t answer. Also, in the NV-items writer, the USB option is grayed out, even though it is selected. Not sure if this is indicative of anything. Thanks!
hi my imei us already corrupt but i made a file with the nv writer now what do i do ?
You need to first inject your imei manually into your phone then restore the backup
What is the procedure to inject the IMEI into phone. Please let me know.
Ready the procedure above
i can’t find the serial port when i click port, mine is the iternational model, gt-i9300, from the uk, i have been searching for days for a solution and seems i have to download adb which isnt that simple as all the guides seem to be out of date, if you know that this method wont work with my phone do you happen to know a alternative? thanks
at the moment i don’t know about the international version since this only works to the US version but I’ll search around then I’ll get back to you.
I’m looking for a alternativ for the iternational model too.
I have this problem when using 4.2.2 galaxy s3 leaked rom.
4.1.2 stock rom works ok.
4.2.2 also worked properly until today.
when i flash 4.1.2 its ok. Imie is correct
how can i repair this on 4.2.2?
when dial *#7284# in 4.2.2 it gives a different menu
What menu?
I hope this will work…trying later on.
Can’t even remember how many custom Roms I’ve Installed on my S3 but the last one got me 😦 got this strange IMEI number now and no service.
First inject your imei number then user the above method to gain signal
Sure hope you can help me, i can’t even download the sgs3.nv.gen.zip file because my computer keeps saying it’s a virus. I have all anti virus turned off.
Hello, i have the same problem. But I have an international gs3 (gti9300) . Do you have any solution for international version??? My imei number was lost due to flashing . I have my original imei number. Your help will be appreciated.
If you found a solution let me know…
hey…when i dial *#7284# it says no registered…
the nv item reader write doesnt write it says failed phone does not answer please help
my samsumg galaxy s3 is an exynos no a qualcom, works the tutorial with this device ?
this works only with US version’s of the Galaxy S3?
fuke
????
am so sorry guys had forgot my password but now am back ready to help everyone. Im making a video on how to gain/eject your imei number and also how to get your 4G signal.
Hey techglobal101, thanks for the tut. However, my i9300 with 4.1.2 restored stock FW, still has IMEI 004999010640000 / 01. In addition, after dialing *#7284# and selecting Qualcomm USB Settings, it shows the following:
MTP
MTP + ADB
PTP
PTP + ADB
RDNS + DM + MODEM
DM + MODEM + ADB
Can you advise me which to select, as well as what cable to use e.g. standard USB, UART USB, and should I downgrade to fix this. Also were you getting the phone information after connecting to NV reader/writer? Please help me…
Thanks
hi m8
i flashed a stock rom (4.04) and now imei is gone, my problem is when i i do *#7284# i only have
UART
MODEM
PDA
or
USB
MODEM
PDA
Can you advise what best to do?
thx
The *#7284# does nothing on my i9305? any ideas? Phone has been rooted and running Cyanogen 10.1 and I have no signal.
I had reported the phone as lost to network in error and then they said they could unblock the IMEI again.
Thanks
When I click the link for Use this it doesn’t work.. Any ideas? I have GS3 AT&T.. Thanks
HI
Under the PHONE UTIL menu I see the following options
UART==> MODEM, PDA
USB==> MODEM,PDA
what are the correct setting in order to work properly in diag mode fo S3 ?
UART=>MODEM
USB=>MODEM
UART==>MODEM
USB==>PDA
HI im not getting that qualcom usb option that u have mentioned in the second step. and also wen i try to read using the reader im getting a message as failed.Phone doesnt answer…
Hey,
when i click generate i get an error message: Could not find file: nv.txt in user/appdata/local/temp/afolder. I can click continue or quit. When I click continiue nothing happens, the white box stays empty.
I already tried making a custom (empty) nv.txt file in /user/appdata/local/temp/afolder. But when I do that; nothing happens when I click generate.
All I get is phone does not answer.
HI please can i have a link to the “THIS tool” for imei mailed to me please qford@telkoms.net, it would be greatly appreciated
I can’t install the drivers help!!
After installing a rom from Sammobile or rooting process with CF-Root, I lost voice service. The IMEI is there… and matching the one showing on the device. But the phone keeps saying “Insert SIM card” or “No SIM”. No phone calls possible. Chances are the efs got corrupted in the process. When I try to follow your instructions, I don’t even see the Qualcomm USB settings. Maybe that’s because my phone was bought in Europe. I only have 2 sets of options:
UART (modem or PDA) (modem is selected)
USB (modem or PDA) (PDA is selected)
Alledgelly I have to pick one option in each group and press Save and Reset.
I’m clueless.
Thank you very much for your working helping people, techglobal101. There should be more people like you on this planet.
Hi, i cant download the “custom built tool” to generate an imei backup… Any chance of a working link please?
hi when i convert s3 andriod version in 4.2.2 the call was not go and come and Internet was also not working and imei was not in phone.
plz told me how do they work
1. I tried to install downloaded drivers but nothing happens after click on the button Setup.
2. After the dialed combination *#7284# my s3 shows another options: “PhoneUtil” -> “UART: Modem/pda”, “USB: Modem/pda” -> “Save and Reset”. As a result, there is no required port to chose -> The phone cannot be found by my laptop.
Q1: How could be solved issue with another *#7284# menu
Q2: Could the second issue be caused by the first one?
Thanks a lot for any help!!!!!
Anything new with regards to the GT-i9300 the international version as it doesn’t have the Qualcomm usb interface
download terminal emulator and run this command it will lead you to the qualcomm settings page directly.
su -c ‘am start -n com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings’
you have to be rooted for this to work
Use THIS custom built tool to easily generate a backup file with your properly formatted IMEI to restore your phone the file can’t be downloaded ! Can you please send it to my email??
Can you please send link for tool thank you in advance
Which tool?
i have updated it
I cannot download the imei injection tool for those phones that are already corrupt. Can someone email me a link that works for that file. enathanholcombiv@gmail.com
Please also let me know the solution as I am facing the same problem with my samsung GT-I9300.
Hello Abbas i have never tried the imei generator on the international Galaxy S3 but try it out and see if it will work.
I recently bought a phone on craigslist and it turns out the imei on the box is different from the one on the back of the phone, i injected both of them and it seems like the one on the box is the only one that works but the internet is sooooooooooo slow, not sure what to do…
i only ran into a corrupt imei after messing around with CM 10.2
will this work on a Verizon galaxy s3 sch I535
Yes it should for work for all american versions
hello I’m very interested in trying this method, but I’m not able to download the file SGS3-IMEI-NV-Gen could you send me a link to download it please!!! I would be very grateful!!!!
Hello Mario i have updated it it should work now
Samsung galaxy S4 tmobile: please hoe to CLEAR IMEI
Clear imei as in? If the imei is missing i dont know how to get it back on the Galaxy S4
does this change your IMEI or just fix it? i need to change my imei
No it just fixes it. Search for an app called Samsung MEID Repair I think it does change the imei.
I just downloaded Samsung MEID repair and it says:
“This software was developed soley to help those with the Samsung I535 that have tried to upgrade or recoverd from emergency mode”
And this is about S3, right?
:-p
Well thought it would work but if its i9300 that I don’t know
Today I tried this:
http://www.w0lfdroid.com/2013/10/How-to-Fix-Wrong-IMEI-No-Network-Galaxy-S3-S4-Note2.html
But still to no avail. The good news is now my phone always asks for the PIN. But I sill have the generic Samsung IMEI 0049xxxxx and still emergency calls only.
This is so frustrating. I own a Galaxy S3 (international version). I’m among those ones who don’t have the Qualcomm settings presented in the US versions :-(((
Please send me a link to the Custom tool. The http://www.cidextreme.com/download/sgs3.nv.gen.zip link is not working anymore. I would really appreciate it. Thanks!
i m nt getting dat qualcomm settings part….its not showing in my phone
instead its showing uart and usb options….plzz help
what type of galaxy s3 do you have?
Is ur internet GPRS1 after doing that?
redo it again to get 3G network
http://www.w0lfdroid.com/2013/10/How-to-Fix-Wrong-IMEI-No-Network-Galaxy-S3-S4-Note2.html
if you’ve lost your IMEI code in your phone, then fix your IMEI here, no editing (since thats not exactly legal), no back required, no manual fixing required;
http://www.w0lfdroid.com/2013/10/How-to-Fix-Wrong-IMEI-No-Network-Galaxy-S3-S4-Note2.html
it saids “Phone does not accept SPC. SPC is not correct” when I clicked “Read” after it’s connected. Any solutions?