S/N 0000000 but IMEI is fine - Galaxy S III Q&A, Help & Troubleshooting

Hi. I flashed the i9300 Android Revolution HD 16 rom and while network and IMEI is fine.
Serial number seems to be all zeroes. In fact, my stock rom, doesn't even show the serial number, at least not in the same place.
On a custom rom (ARHD 16 4.1.2), it shows zeroes.
I tried flashing stock 4.1.1, doesn't show S/N.
Flashed stock 4.0.4 ICS, doesn't show S/N.
Is there a combo for S/N like *#06# for IMEI?
Does this thing simply not have a S/N, it is the korean 3G.
How do I fix this? Thanks.

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[Q] Empty serial number

Hi, I used CM7 by some days, today I came to oryginal 2.2.1 rom but I have empty SN (serial number). How can I repair it?
I flashed my phone by KDZ.

[Q] What about my Serial number 'unknown'

Hi guys,
After flashing Resurrection Remix and back to stock ICS I noticed my serial number is saying 'unknown' Now I have read about some similar topics about this, but I have got something else.
I decided to flash the ICS bootloader. After that my serial was 0009ca6038****. After that I checked with 'abd devices' and it came back with: 304D9ca6038****.
Note: These two are almost the same except for the first 4 characters.
Then I looked at the sticker under the battery and I saw s/n: RF1C50*****. So that's completely different.
Now, which one should be correct? Does your sticker match your serial?
And last but not least: how to solve this?
I am running a CM9 nighlty build on my S2 and the serial number in Settings -> About -> Status is also "unknown"
The first time i realized this was as i read your post.
I have no problems with my phone, so I think the unknown serial number is not important.
I have a RN10pro. When I type *#06#. It says serial number is unknown. How to fix this?

SGS3 Two different serial numbers

Dear All,
I just came to notice that the serial number in the battery compartment of my SGS3 (GT-I9300) is different from that of the Settings>About Device>Status>Serial number. How come? Also when I tried to enter the serial number taken from Settings >About Device>Status>Serial number and typed it into firmware upgrade and initialization of Kies, it works, but when I input the one from the battery compartment of my SGS3, it says "Please check the serial number and enter it again". My first guess is that somehow the mobile I have is some kind of cheat or something (I bought it in China but is not for the Chinese market, it is kind of smuggled to China). May be the chinese just paste the sticker in the battery compartment or whatever. Any thoughts on it?
Thanks
If your phone was branded by any carrier than it could have two different serial numbers. One encoded in efs partition (showed in about phone status menu) and it has 11 chars. Second one is Samsung's device factory service number and it has 16 chars (hex format).
Both are correct. First is used to initialize your phone as you said. You can also register your phone in Samsung service center with this one.
If you like you can use some tools (Network Signal Info or similar) which will show you the second one which should be the same as number under battery.
Don't worry. I suppose that serial number changing is hard to do operation. All you need is correct IMEI number which should be the same as this on phone's box.
i9.0.1.3k galaxy imperator
I have a very similar issue. I am with T-Mobile USA, so I have a slightly different variant of the SGS3. I am running a custom ROM. Now when I flash a factory stock ROM, my serial Number matches that which is under my battery. When I flash cyanogen mod 10 based Roms it changes. The factory Stock Is 11 digits and the new one is only 8 digits. I guess my question is why are my numbers 8 and 11 digits? Is the because of my carrier?

[Q] Not registered to the Network

Hi Guys
I updated my S3 to a small critical update, not 4.1.2 and it was a OTA update and now the phone will not make a call, it keeps displaying " not registered to the Network" but it has a data connection i am able to surf the net, I have checked and the phone is not blocked or on the blacklist or reported stolen but I had unlocked the phone via Unlocker.com a few months ago.No UK SIM i.e. (Vodafone Tmobile Three) will make a call through my phone
I have
Wiped Device to factory settings
Flashed a stock rom JB I9300 4.1.2
Flashed Custom Rom "I9300_Omega_v4.2_AOKP_Milestone_1_Jelly_Bean"
Flashed my Operator Rom back on
I have not backed up my EFS Folder and would not know how to
Reset flash counter
Now My IMEI number has changed but on the IMEI SV number, on the back of my phone the IMEI number ends with a ***** /09 but now I have flashed it ends with a /06 .... will that cause a issue, The long SIM number has not changed on the phone.
any suggestions please as I fear that if I send it off to samsung they will not fix as the IMEI SV number has changed and will charge me as they will state it is out of warranty
Regards
The Great Wizard

[Q] Samsung Galaxy S3 I9300 missing IMEI number

The IMEI number on my S3 is completely gone, i installed a custom ROM and after it booted up i wasnt getting any signal. i didnt a little reasearch and found out the imei number file has been deleted and is wasnt backed up. does anyone know how to recover the IMEI number? I reverted back to the stock rom and unrooted my device but the IMEI thats underneath the battery doesnt match with the one it shows when i dial *#06#, when i dial that the IMEI is 004999010640000/01 and when it was rooted and on a stock rom it showed "null". if anyone knows how to fix this can you please give a detailed walkthrough on what to do.

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