Mobile data not working? - Galaxy S III Q&A, Help & Troubleshooting

Hi, i'm currently using the outright i9300 galaxy s3 with the Virgin mobile network, my mobile data was working fine until i flashed the recently leaked 4.1.1 firmwares, now when I try to use the mobile data it just says mobile data is not connected, please help.
thanks in advance

Henry918 said:
Hi, i'm currently using the outright i9300 galaxy s3 with the Virgin mobile network, my mobile data was working fine until i flashed the recently leaked 4.1.1 firmwares, now when I try to use the mobile data it just says mobile data is not connected, please help.
thanks in advance
Click to expand...
Click to collapse
Flash your original modem .
Did you full wipe before reverting to ICS .
jje

Check your APN settings before you go flashing any modems. Google for your provider's defaults if you aren't sure.

Me too with French carrier.
ICS modem are compatible with JB rom? i'm not sure...

Tumeconnais said:
Me too with French carrier.
ICS modem are compatible with JB rom? i'm not sure...
Click to expand...
Click to collapse
No, you will need a matching version.ICS for ICS and JB for JB.

Thank.
but all modem (LH4/5/6/7) doesn't work.
Work, but disconnect all time, 3G->H->H+ and only when is on H+ internet work on 3G and H, doesn' work.

Tumeconnais said:
Me too with French carrier.
ICS modem are compatible with JB rom? i'm not sure...
Click to expand...
Click to collapse
Some ICS are for me better than current JB modems .
jje

It is really important, that you made a clean install. Wipe everything including system, data, etc.
This was my reason for bad signal etc.
If something is left from old firmwares....you know what I mean

i know, i have wiped everything, but same problem, Maybe LH8 modem is different.
i think i come back on LH1.

Did you make a backup before flashing?

Yes with go backup. Why? I'm in LH1, and i have the same problem. You think it's my backup?
Edit : no, internet work, just my phone change all the time H+->3g->H. But in LH7, the phone take most time to change in H+, now, in LH1, when i'm using internet my phone change immediatly network in H+. It's weird.
I don't understand why my phone doesn't stay in H+ alla time, i have full bar of network.
Sorry i'm french if you don't understand what i'm saying.
Sent from my GT-I9300 using xda app-developers app

JJEgan said:
Flash your original modem .
Did you full wipe before reverting to ICS .
jje
Click to expand...
Click to collapse
How can i find out what my original modem is?
Also, how can i do a full wipe? i normally just do the wipe in CWM recovery

Related

question about firmwares

So I'm downloading Wanam stock deodexed XXALF6 firmware to be flashed in CWM which says "NO WIPE".
The modem is DXLEA
and it says it's Malaysian.
Here's where my confusion is. I think my modem is LF2 (according to Kies)
Will I need the same modem as I have now for best compat with my network? Can I install the CSC for my network to keep APN stuff and MSS without it altering the stock sammy nature of my ROM?
Also... is everything going to be in Malaysian?
Kryten2k35 said:
So I'm downloading Wanam stock deodexed XXALF6 firmware to be flashed in CWM which says "NO WIPE".
The modem is DXLEA
and it says it's Malaysian.
Here's where my confusion is. I think my modem is LF2 (according to Kies)
Will I need the same modem as I have now for best compat with my network? Can I install the CSC for my network to keep APN stuff and MSS without it altering the stock sammy nature of my ROM?
Also... is everything going to be in Malaysian?
Click to expand...
Click to collapse
just flash modem only for your country for standard result. for best result, try all modem available for your phone. no need install csc just to get APN stuff. it's automatically generated, same as nexus (do you know that s3 copy nexus features? )
Kryten2k35 said:
So I'm downloading Wanam stock deodexed XXALF6 firmware to be flashed in CWM which says "NO WIPE".
The modem is DXLEA
and it says it's Malaysian.
Here's where my confusion is. I think my modem is LF2 (according to Kies)
Will I need the same modem as I have now for best compat with my network? Can I install the CSC for my network to keep APN stuff and MSS without it altering the stock sammy nature of my ROM?
Also... is everything going to be in Malaysian?
Click to expand...
Click to collapse
I don`t know about Malaysian language included in the rom, better check on the Wanam thread. As for the modem it can be changed by flashing another modem eather through Odin or cwm. Your apn settings will remain unchanged and are not beeing changed by using another modem. Modems can be flashed here http://forum.xda-developers.com/showthread.php?t=1740061.
Thanks ^
I dunno if I can be bothered messing with the modems, though, I get a decent speed, around 2mbps, which is better than my old Orange phone
Kryten2k35 said:
Thanks ^
I dunno if I can be bothered messing with the modems, though, I get a decent speed, around 2mbps, which is about the same as my old Orange phone
Click to expand...
Click to collapse
It's very easy mate. And very easy to follow step by step guides on here. I flashed around 5 modems and increased my speed from jus 1mbps to over 3.5..
Jus a suggestion
Sent from my GT-I9300 using xda premium
slking1989 said:
It's very easy mate. And very easy to follow step by step guides on here. I flashed around 5 modems and increased my speed from jus 1mbps to over 3.5..
Jus a suggestion
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Which did you try and which did you settle on?
I depends on country and carrier (network provider) so what I tried and am using is no use to u. Unless your in England and on Vodafone. Just get the speed test app. Flash a modem. Record its speed. Flash another modem etc etc and work out what's best for you.. that's my best advice
Sent from my GT-I9300 using xda premium
Network signal app is also useful
LFB modem 33%
BULF1 modem 100 %
shove a few on your SD card and try them via CWM .
jje
Cheers fellas, just about to flash that ROM so I'll start a few more modems downloading now and give it a shot.

Cell Network not working on Cyan 9/9.2

Recently I upgraded to cyanogenmod 9 from 7.2 and noticed that the phone was not detecting the GSM phone network. Then using clockworkmod I installed another modem and the phone used to detect the network. But the phone used to lose network on restarting and again I install another modem and it starts working again. My phone had no issues in 7.2 and now I have reverted back to 7.2. Can someone help me on why this is happening. Thanks for your help.
Try different modems
Peace
Hit Thanks & It will Disappear
Sent from S II Running Official ICS 4.0.4 with Siyah 4.1 [/size]
Have you done a factory reset before updating CM7.2 to CM9.1?
Omaxe said:
Try different modems
Peace
Hit Thanks & It will Disappear
Sent from S II Running Official ICS 4.0.4 with Siyah 4.1 [/size]
Click to expand...
Click to collapse
I did try various modems but on a restart I would lose network again. This started happening only after upgrade. After restoring the backup to 7.2 the problem dissappeared
przemcio510 said:
Have you done a factory reset before updating CM7.2 to CM9.1?
Click to expand...
Click to collapse
No I did not
sminons said:
No I did not
Click to expand...
Click to collapse
Then flash ROM again...
Before qnd after flashing reset/ format system data...
Format dalvik cache and everything else
Peace
Hit Thanks & It will Disappear
Sent from S II Running Official ICS 4.0.4 with Siyah 4.1 [/size]
Factory reset after changing Android version is necessary.
On CM7.2, do 3-wipe-combo (/system, /cache, /data)
Flash CM9.1 and reboot.
There is no need to wipe data after flashing.
Upgraded to cyan 9.1 and did a factory reset. Still experiencing the problem. I am trying out the various modems with mixed results.
My doubt is if a particular modem is working, why does the signal drop completely on restart?
Sent from my GT-I9100 using xda app-developers app
sminons said:
Upgraded to cyan 9.1 and did a factory reset. Still experiencing the problem. I am trying out the various modems with mixed results.
My doubt is if a particular modem is working, why does the signal drop completely on restart?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
use 'GetRil' app from stores and match the RIL with the modem ur using and see
Sun90 said:
use 'GetRil' app from stores and match the RIL with the modem ur using and see
Click to expand...
Click to collapse
Looks like it is OK for the moment.
Still doesn't work. The phone loses network on reboot .

[Q] Please help. Dont know what modem to use?

Hello,
I own a samsung galaxy s3 gt i9300. I rooted my phone and stuck to stock modem for a while. I then flashed paranoid android 3.15 on it which still used the stock modem. Then i flashed omega rom on it which changed the modem I guess and now I cannot connect to my local number. My IMEI number is there so my EFS is secure ( I have backups of it too). I tried flashing XXELLA modem first since that came stock with the phone when it came. I tried multiple other modems like XXEMB6 and XXEMC2. But it wont connect to my mobile number. I live in Pakistan and bought it factory unlocked from samsung.
Can someone please guide me as to which modem to flash? This is a modem problem right? Because that means I can never flash custom software with different modems. Or is it a CSC problem?
This is the thread i used for flashing/downloading modems! http://forum.xda-developers.com/showthread.php?t=2076857
First attachment is the stock configuration the phone came with
Second is the new ROM i put in which is omega rom.
I even restored my nandroid backup of the stock working official samsung ROM. But still no connectivity. Someone help please!?
omgbuffguy said:
Hello,
I own a samsung galaxy s3 gt i9300. I rooted my phone and stuck to stock modem for a while. I then flashed paranoid android 3.15 on it which still used the stock modem. Then i flashed omega rom on it which changed the modem I guess and now I cannot connect to my local number. My IMEI number is there so my EFS is secure ( I have backups of it too). I tried flashing XXELLA modem first since that came stock with the phone when it came. I tried multiple other modems like XXEMB6 and XXEMC2. But it wont connect to my mobile number. I live in Pakistan and bought it factory unlocked from samsung.
Can someone please guide me as to which modem to flash? This is a modem problem right? Because that means I can never flash custom software with different modems. Or is it a CSC problem?
This is the thread i used for flashing/downloading modems! http://forum.xda-developers.com/showthread.php?t=2076857
First attachment is the stock configuration the phone came with
Second is the new ROM i put in which is omega rom.
I even restored my nandroid backup of the stock working official samsung ROM. But still no connectivity. Someone help please!?
Click to expand...
Click to collapse
Multiple modems suggests you have not entered the correct network APN settings for your network .
Or Sim is faulty .
jje
JJEgan said:
Multiple modems suggests you have not entered the correct network APN settings for your network .
Or Sim is faulty .
jje
Click to expand...
Click to collapse
Called up the network. Everything is fine on their end. And I was told APN settings is just for Mobile Internet (GPRS/Edge yeah I know Pak doesnt have 3G yet lol). It happened right after flashing the new modem. Any other solutions?
omgbuffguy said:
Called up the network. Everything is fine on their end. And I was told APN settings is just for Mobile Internet (GPRS/Edge yeah I know Pak doesnt have 3G yet lol). It happened right after flashing the new modem. Any other solutions?
Click to expand...
Click to collapse
Usual suspects .
Wrong IMEI .
Sim Faulty
CSC or mobile settings APN etc wrong .
Modem .
jje
JJEgan said:
Usual suspects .
Wrong IMEI .
Sim Faulty
CSC or mobile settings APN etc wrong .
Modem .
jje
Click to expand...
Click to collapse
I checked the IMEI. Still there.
Sim works properly on another phone.
CSC settings I tried of many regions (through CSC changer app) from EUR to PAK to even MID (middle east)
As for modem, I flashed stock firmware from sammobile for Pakistan, the latest one, and it still refuses to connect. APN is fine according to network.
P.S. I dont know if this holds importance or not, but I did experience SDS. And my local repair shop (owing to the abysmal samsung warranty policy in pakistan) repaired it. But they did not change the motherboard. They changed the 'chipset' only and upgraded it to 4.1.2 firmware with the sds patch fix. Might be a stupid question, but could it be that the new chip hardware they put in is from a different region, so they had to flash a different regions firmware, and the answer to all my problems could be flashing the one they flashed after i ask them!?
Thank you!
anyone?
Read the rules, do not bump before 24 hours has passed. I will report it next time.
omgbuffguy said:
I checked the IMEI. Still there.
IMEI as under the battery .
A guess is that service centre broke something .
A guide on how to reinstall stock firmware without flashing by using KIES
http://forum.xda-developers.com/showthread.php?t=1978840
jje
Click to expand...
Click to collapse
Try (Ariza Pach ) from xda, it solved my network problem. Push Thanks Button if I Helped :thumbup:

I really really ****ted up this time!

My phones is from peru but it was realesed so i could use it anyware (i am from argentina). i did root it, all fine there. had 3g working and mobil network working aswell. 4 months ago i saw Ultima Rom and i wanted to give it a try. i instold it but since i am new on this stuff i didnt do a efs back up. but i did do a kies full buck up i dont know if that would help. so after installing ultima rom v13 i realized that 3g was not working. the mobil net was fine and all of the rest was fine, but the 3g was dead. i had the 3g on and of and re config and even call my company to see if there was their problem but no, it was the rom. today i got tierd of depending on wi fi all the time to enter the internet and i dicided to install the new v14 from ultima rom, big mistake. noting was working after instaling the v14 rom. not even the mobil network. i did a efs back of from the v13 just in case.. so i figured it was the fault of the rom, i dowloaed a JB 4.2.2 and instold it, all good but nothing works too. i cant config the mobil network it says it can conect to it and 3g is like miles away from working..
any help?XD i am afraid i destroyd my phone and i will have to get a new cheap crapy cel.
zatios said:
My phones is from peru but it was realesed so i could use it anyware (i am from argentina). i did root it, all fine there. had 3g working and mobil network working aswell. 4 months ago i saw Ultima Rom and i wanted to give it a try. i instold it but since i am new on this stuff i didnt do a efs back up. but i did do a kies full buck up i dont know if that would help. so after installing ultima rom v13 i realized that 3g was not working. the mobil net was fine and all of the rest was fine, but the 3g was dead. i had the 3g on and of and re config and even call my company to see if there was their problem but no, it was the rom. today i got tierd of depending on wi fi all the time to enter the internet and i dicided to install the new v14 from ultima rom, big mistake. noting was working after instaling the v14 rom. not even the mobil network. i did a efs back of from the v13 just in case.. so i figured it was the fault of the rom, i dowloaed a JB 4.2.2 and instold it, all good but nothing works too. i cant config the mobil network it says it can conect to it and 3g is like miles away from working..
any help?XD i am afraid i destroyd my phone and i will have to get a new cheap crapy cel.
Click to expand...
Click to collapse
did you try flashing a STOCK firmware of your region?
sriram231092 said:
did you try flashing a STOCK firmware of your region?
Click to expand...
Click to collapse
i couldent find any firmware or guide how to install one from my region. as i said i am a noob in this area
zatios said:
i couldent find any firmware or guide how to install one from my region. as i said i am a noob in this area
Click to expand...
Click to collapse
what is your region? i'll try to provide you the link
sriram231092 said:
what is your region? i'll try to provide you the link
Click to expand...
Click to collapse
that would be great! i am from argentina, south america that would be
So i found a firmware from stock of movistar from argentina, wich is my company by the way. i already instold it on my s3 but is the same result, no registred network for mobil service or 3g. i try to registred manualy as in the other roms but it just wont let me do it
zatios said:
So i found a firmware from stock of movistar from argentina, wich is my company by the way. i already instold it on my s3 but is the same result, no registred network for mobil service or 3g. i try to registred manualy as in the other roms but it just wont let me do it
Click to expand...
Click to collapse
Have you restored your EFS backup into the stock Movistar firmware?
zatios said:
So i found a firmware from stock of movistar from argentina, wich is my company by the way. i already instold it on my s3 but is the same result, no registred network for mobil service or 3g. i try to registred manualy as in the other roms but it just wont let me do it
Click to expand...
Click to collapse
okay! that's good to hear. but i have a doubt, what was the firmware base of the ultima rom you installed? and also what was the firmware you were using before you flashed that? there might be a change in EFS format and that might be the reason.
Basics read first.
http://forum.xda-developers.com/showthread.php?t=2344125
Critical you read the first two posts .
Sleepycat3 said:
Have you restored your EFS backup into the stock Movistar firmware?
Click to expand...
Click to collapse
That's the thing i was trying to explain on the first post. i only have the efs buck up of the ultima rom and not the efs back up from the original rom that was in the phone when i got it because back then i didnt know about the efs folder
sriram231092 said:
okay! that's good to hear. but i have a doubt, what was the firmware base of the ultima rom you installed? and also what was the firmware you were using before you flashed that? there might be a change in EFS format and that might be the reason.
Click to expand...
Click to collapse
Well when i started all this 4 months ago i didnt know anyting about anything so i didnt do any type of back up of the original firmware before ultima rom, i dont know what firmware was it but i can imagine wich one was it because was from a company called "Claro" from peru so may be if i get lucky there will be only one firmware from that country and that company. The Ultima rom i flashed that time was the v13, i know the EFS have change and that's proably why all this is happening i cant find a way to restore the EFS to it's original form.. probably if i found a way to do that i would even make the ultima rom work here too
There's no software solution for this unless you have efs backup , visit nearby service center
sent from marijuanated muffin
there must be a way. i mean if i install the ultima rom v13 and use the efs from that back up i made at least i should have the v13 with mobil networkin working right?
Did you try ultima rom with a custom kernal, if not give it a try, just reinstall the rom and the option is there on install.
Also if you want to try a stock rom, try http://forum.xda-developers.com/showthread.php?t=1646610
Iys Netherlands but its what im on now for the time being, and its just a matter of setting to your language on firdt setup.
Sent from my GT-I9300 using xda app-developers app
restore the kies backup.
zatios said:
That's the thing i was trying to explain on the first post. i only have the efs buck up of the ultima rom and not the efs back up from the original rom that was in the phone when i got it because back then i didnt know about the efs folder
Click to expand...
Click to collapse
Ok, few questions:
- check your imei *#06# does it match with your phone's? Check under battery.
If its different you messed up your efs partition indeed.
- that backup you have, was the phone working when you took it? Do you have access to its files? If you never installed any Samsung based rom that changes your efs partition format (newer official ones), id just try to replace the efs contents with the backup ones (assuming its a working backup). As far as I know, apart from the new roms that change efs's format, roms dont touch that partition so it should be fine regardless of where you took that backup.
Sent from my GT-I9300 using xda premium
kaynpayn said:
Ok, few questions:
- check your imei *#06# does it match with your phone's? Check under battery.
If its different you messed up your efs partition indeed.
- that backup you have, was the phone working when you took it? Do you have access to its files? If you never installed any Samsung based rom that changes your efs partition format (newer official ones), id just try to replace the efs contents with the backup ones (assuming its a working backup). As far as I know, apart from the new roms that change efs's format, roms dont touch that partition so it should be fine regardless of where you took that backup.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
- No, the IMEI that now is on the phone is: 004999010640000 very diferent from my imei on the back of my phone
- the back up i have is from the efs from the last working ultima rom, that ''working ultima rom'' only had the mobil network working but not the 3g. i tried to instal a stock rom and it didnt work so now i am trying to instal the older version of ultima rom that i had back when i did the back up of those efs, hoping that may be i will get mobil network working again at least.
anyways, i found a tool called SRS server that may help me restore my IMEI in any rom, my question about this is if i restore the IMEI on any rom to my original IMEI the other files from EFS dont affect the phone also? i mean if i only get my IMEI back on the phone no metter the rom it is, it will work?
Don't use the tool. Getting the imei correct is the easy part.
First thing to to imho is to go back to latest ultima. Ensure you choose the custom kernel not stock in options. Ensure you have the mg modem.
Lets to that and take it from there
-----------------------
Sent via tapatalk.
I do NOT reply to support queries over PM. Please keep support queries to the Q&A section, so that others may benefit
jayc1980 said:
Did you try ultima rom with a custom kernal, if not give it a try, just reinstall the rom and the option is there on install.
Also if you want to try a stock rom, try http://forum.xda-developers.com/showthread.php?t=1646610
Iys Netherlands but its what im on now for the time being, and its just a matter of setting to your language on firdt setup.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
i dont understand what do you mean by installing a custom karnal? becasue i know ultima rom has this option on install but how would this affect the result?
PD: i'll try that rom
rootSU said:
Don't use the tool. Getting the imei correct is the easy part.
First thing to to imho is to go back to latest ultima. Ensure you choose the custom kernel not stock in options. Ensure you have the mg modem.
Lets to that and take it from there
-----------------------
Sent via tapatalk.
I do NOT reply to support queries over PM. Please keep support queries to the Q&A section, so that others may benefit
Click to expand...
Click to collapse
do you think that i should install the latest ultima rom version or the one that i was using when i did the back up?

[Q] After flashing stock samsung rom, i have been stuck on emergency calls only,help?

Hi,
After flashing stock s3 rom my sim card is not being detected. i know the sim card works because i tried it on another phone and i have a feeling my efs file has been made corrupt as my imei has been completely changes to 0049xxxx. Also i cannot connect to any wifi network but theyre being found . ive looked everywhere and found no answer. Please help me on how i can fix it.
I'm guessing that you made no efs backup? Do your phone's cellular functions or wi-fi work while running a custom rom? What kind of GS3 do you own (i9300 or i9305?).
ArkThompson said:
I'm guessing that you made no efs backup? Do your phone's cellular functions or wi-fi work while running a custom rom? What kind of GS3 do you own (i9300 or i9305?).
Click to expand...
Click to collapse
Thanks for replying
Regarding your questions, no i didnt make no efs backup, wifi and cellular functions do not work on custom roms either and i own a I9300
Akbar.Ahad said:
Thanks for replying
Regarding your questions, no i didnt make no efs backup, wifi and cellular functions do not work on custom roms either and i own a I9300
Click to expand...
Click to collapse
What rom version did you start out with and what rom version did you flash?
Darke5tShad0w said:
What rom version did you start out with and what rom version did you flash?
Click to expand...
Click to collapse
I started with liquidsmooth on 4.4.4 , which worked flawless, and changed to stock 4.1.3
Akbar.Ahad said:
I started with liquidsmooth on 4.4.4 , which worked flawless, and changed to stock 4.1.3
Click to expand...
Click to collapse
You cannot go backwards to 4.1 with out a efs v1 back up. Somewhere in 4.3 samsung updated it to v2.
Without a back up you can only use the latest 4.3 and upwards.
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
Darke5tShad0w said:
You cannot go backwards to 4.1 with out a efs v1 back up. Somewhere in 4.3 samsung updated it to v2.
Without a back up you can only use the latest 4.3 and upwards.
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
Click to expand...
Click to collapse
Actually im not sure what I flashed to but im pretty sure it is 4.3 as I just done a basic flash using odin, no backup was needed. Could i get somebody elses efs file backup and restore it?
Akbar.Ahad said:
Actually im not sure what I flashed to but im pretty sure it is 4.3 as I just done a basic flash using odin, no backup was needed. Could i get somebody elses efs file backup and restore it?
Click to expand...
Click to collapse
Going to settings, about phone will tell you the version
No you cannot do that. Read up on that link I sent you.
Hi there, im on 4.3 stock rom. The thread you provided me with says to flash stock rom with odin. The problem is I do not know which stock rom I should flash. Please tell me which one I should flash and if you can provide me with a link.
My s3 model is gt-i9300, uk model and is unlocked.
Sent from my GT-I9300 using XDA Free mobile app
Darke5tShad0w said:
Going to settings, about phone will tell you the version
No you cannot do that. Read up on that link I sent you.
Click to expand...
Click to collapse
Hi there, im on 4.3 stock rom. The thread you provided me with says to flash stock rom with odin. The problem is I do not know which stock rom I should flash. Please tell me which one I should flash and if you can provide me with a link.
My s3 model is gt-i9300, uk model and is unlocked.

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