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GT-i9505 No mobile network/data after flashing custom ROM

Hi guys been searching all day when I can grab some free WiFi, basically I rooted my s4 gti9505 with auto root and then installed custom recovery, and flashed PAC rom. I'm unable to make calls or receive mobile data but can use WiFi. My settings say baseband unknown .. I'll attach a picture of my settings here in this thread. I have attempted to flash a modem/radio in Odin but this didn't seem to make any difference, the problem is I'm not sure if it was the right thing to do (didn't make a back up of my phone foolishly before flashing PAC rom)
I'd appreciate any help with this guys! My network is vodaphone UK if that makes any difference to any advice given...
Thanks in advance!
Sent from my GT-I9505 using xda app-developers app

somepepe**** said:
Hi guys been searching all day when I can grab some free WiFi, basically I rooted my s4 gti9505 with auto root and then installed custom recovery, and flashed PAC rom. I'm unable to make calls or receive mobile data but can use WiFi. My settings say baseband unknown .. I'll attach a picture of my settings here in this thread. I have attempted to flash a modem/radio in Odin but this didn't seem to make any difference, the problem is I'm not sure if it was the right thing to do (didn't make a back up of my phone foolishly before flashing PAC rom)
I'd appreciate any help with this guys! My network is vodaphone UK if that makes any difference to any advice given...
Thanks in advance!
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
flash MGA modem twice with odin (first time do not tick "auto-reboot", when it "pass" remove battery, insert it flash second time)
This things happend when people move from old baseband to new baseband

samersh72 said:
flash MGA modem twice with odin (first time do not tick "auto-reboot", when it "pass" remove battery, insert it flash second time)
This things happend when people move from old baseband to new baseband
Click to expand...
Click to collapse
hi thanks for your reply, i have just flashed the MGG modem trying to fix it myself but when i reboot myself manually it just hangs on the samsung boot logo for ten minutes..i will try your method with the MGA modem and hope it works
thanks

somepepe**** said:
hi thanks for your reply, i have just flashed the MGG modem trying to fix it myself but when i reboot myself manually it just hangs on the samsung boot logo for ten minutes..i will try your method with the MGA modem and hope it works
thanks
Click to expand...
Click to collapse
and reflash the custom rom after flashing the modem

samersh72 said:
and reflash the custom rom after flashing the modem
Click to expand...
Click to collapse
will do this too, have just finished flashing MGA modem twice using your steps, will flash rom again..i wonder if i should wipe/factory wipe as i would when installing new rom...ill try it!
no luck -still no network. im running out of ideas
network - unknown
mobile network type - unknown
imei unknown
imei sv - unknown
going out now for a while but thought id ask - do you think that installing official stock rom (perhaps from your s4 unrooting guide) would help flashed via odin? from searching i can see that some folk suggest that stock will reinstall everything i need...im hoping so, i really wouldnt mind going back to stock, anythings better than this

somepepe**** said:
will do this too, have just finished flashing MGA modem twice using your steps, will flash rom again..i wonder if i should wipe/factory wipe as i would when installing new rom...ill try it!
no luck -still no network. im running out of ideas
network - unknown
mobile network type - unknown
imei unknown
imei sv - unknown
Click to expand...
Click to collapse
did you put modem in "phone" in odin?
hmmm weird! i guess your imei is not corrupted, sometimes while flashing rom in cwm, efs partition is not detected, so flashing modem twice should work
you can try with an other modem, use new one (but im sure to flash it twice)
another option is trying to flash your stock firmware

samersh72 said:
did you put modem in "phone" in odin?
hmmm weird! i guess your imei is not corrupted, sometimes while flashing rom in cwm, efs partition is not detected, so flashing modem twice should work
you can try with an other modem, use new one (but im sure to flash it twice)
another option is trying to flash your stock firmware
Click to expand...
Click to collapse
yes put it in "phone" mode, thats the second or third one i have flashed now so im not sure it wont help but for sure ill try again!
are you able to determine that its not corrupted? would it state as such if it were? im going to flash a stock firmware as a last resort. lost after that haha
edit - installed cwm using sgs4 flasher and re-installed my custom rom and gapps, booted no probs and network now working - sorted!! thanks for your help i dont think i would have reflashed the rom without your advice to do so

So I'm practically in the same boat. I'm currently on P.A.C. man nightly 09/18 (Vodafone Germany branded device). I never had similar problems, but now I can't call (or be called) and I'm not able to use mobile data.
I nearly tried everything:
1) I checked the IMEI (saved it before switching over to custom roms), but an IMEI number is still there.
2) Went back to stock to see if it's a problem of P.A.C. man ROMS or not. On stock it didn't work either.
3) Went back to P.A.C. man ROM and flashed modem XXUBMF8 via Odin 3.04 (from this thread: http://forum.xda-developers.com/showthread.php?t=2192025)
4) Flashed the modem again after I flashed the ROM because it didn't work either.
So I'm completely lost now, I really don't know what to do next. I had mobile data for a couple of seconds every now and then, but nothing stable. And since the problem came up (yesterday evening) I can not make any calls at all.
Can someone help me?
Edit: The very strange thing is that I have full reception balks in the notification area (only in grey). But still, I guess this means that the device is somehow able to detect a signal but can not connect to it?
Edit2: I apparently have no Device-ID. May that be a problem?

So I took some screenshots to show you guys my problem a bit better. For some reason my mobile data now works (currently HSPA, but it's extremely slow). But I still can't make any calls (or get called too). =/
Edit: So to sum this up: the strangest thing about this problem is, that even when I go back to full stock I can't make calls. =/ What could be the problem? An IMEI number is present in the settings (althouh the 'IMEI SV' under 'About phone' --> 'Status' was one digit below the current one that I can see under those stats). The whole problem makes me believe that my provider can't sort my phone number to my device (I'm on Vodafone; but if that's really the case: why the hell does mobile data works sometimes?!). The other possibility: something with the modem/radio is broken. Could this be the problem? The thing is that I also tried to flash a custom modem, but the problem is still there...
I'm really concerned that my phone just became an expensive paperweight

Slightly different than my problem in that I didn't even have any bars for reception..my problem was fixed by changing the custom recovery software (originally I used philz to flash PAC), But I flashed cwm and then used this to again flash PAC, and all was good..don't ask my why but it helped me so you might want to try this...
Sent from my GT-I9505 using xda app-developers app

somepepe**** said:
Slightly different than my problem in that I didn't even have any bars for reception..my problem was fixed by changing the custom recovery software (originally I used philz to flash PAC), But I flashed cwm and then used this to again flash PAC, and all was good..don't ask my why but it helped me so you might want to try this...
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
Thank you for your answer!
You also flashed a different modem didn't you? Did this help or was it only the custom recovery? I'm confused because I used CWM before and never had problems. But then this mess all came up...

Yes I flashed several modems, that didn't help..only using a different custom recovery to flash my custom Rom again helped..hope you get sorted!
Sent from my GT-I9505 using xda app-developers app

So I tried to flash PAC with TWRP 2.6.0 (it worked before), but the problem is still there.
I'm really confused. I really don't know what I can do or try to fix this mess... Is there some USSD code or something to find out if my device is missing some ID codes or if the modem is messed up or something?
Edit:
Update: For some reason I now can receive calls/SMS but only when I'm on GPRS speed. Outgoing and ingoing calls are no problem then. When my device is on HSPA or HSPA+ speed however, the old problem of not being able to call or be called is back. On one hand it's good that I'm somehow able to make calls again on the other hand it gets stranger and stranger. I know that it's a bug on PAC man ROMs that you can't change the mobile data speed options (LTE/HSPA/GPRS etc.), but I think that this could be the problem (or at least a part of it)...

Gotcher said:
So I tried to flash PAC with TWRP 2.6.0 (it worked before), but the problem is still there.
I'm really confused. I really don't know what I can do or try to fix this mess... Is there some USSD code or something to find out if my device is missing some ID codes or if the modem is messed up or something?
Edit:
Update: For some reason I now can receive calls/SMS but only when I'm on GPRS speed. Outgoing and ingoing calls are no problem then. When my device is on HSPA or HSPA+ speed however, the old problem of not being able to call or be called is back. On one hand it's good that I'm somehow able to make calls again on the other hand it gets stranger and stranger. I know that it's a bug on PAC man ROMs that you can't change the mobile data speed options (LTE/HSPA/GPRS etc.), but I think that this could be the problem (or at least a part of it)...
Click to expand...
Click to collapse
Actually I can change the data in my phone between 3G and 2G (don't have LTE support here in my country)
Have you checked your APN? Think that might be a problem.
Also please post the steps you take before flashing PAC (ROM, kernel, recovery, etc)

soyusado said:
Actually I can change the data in my phone between 3G and 2G (don't have LTE support here in my country)
Have you checked your APN? Think that might be a problem.
Also please post the steps you take before flashing PAC (ROM, kernel, recovery, etc)
Click to expand...
Click to collapse
Within Wireless & Networks --> Mobile Networks --> Network Mode? On PAC? It always crashes when I try to change something there. In the PAC bug post this seems to be a known bug, my mode is also set to GSM/WCDMA/LTE. But whenever I enter the settings to change this, only 'LTE' is chosen as option. I don't have LTE on my plan and I read somewhere else that Vodafone has major problems with it's LTE network here in Germany and that it may be better for customers without it to turn it off.
About APN: there is definitely something strange. I can enter the settings and I see three different APNs that were not created by me (they must be the standard carrier ones): they are called Vodafone DE (for Germany), 1und1 (pretty strange because the settings are the very same on this one, only the name is different) and Vodafone DE-MMS.
The strange thing now is that I can't change any value of the Vodafone DE APN... When I go into its settings, everything ia greyed out. This was the same on the stock ROM...
Now when I create a new APN with the correct provider settings (found via Google on the VF homepage), the phone still won't work. When I put the device aside for a few minutes, the Vodafone Deutschland DE APN is the selected APN again although I never went back to it...
Is there some option to take a deeper look into the modem stats to see what's the problem?

Install stock ROM
Gotcher said:
Within Wireless & Networks --> Mobile Networks --> Network Mode? On PAC? It always crashes when I try to change something there. In the PAC bug post this seems to be a known bug, my mode is also set to GSM/WCDMA/LTE. But whenever I enter the settings to change this, only 'LTE' is chosen as option. I don't have LTE on my plan and I read somewhere else that Vodafone has major problems with it's LTE network here in Germany and that it may be better for customers without it to turn it off.
About APN: there is definitely something strange. I can enter the settings and I see three different APNs that were not created by me (they must be the standard carrier ones): they are called Vodafone DE (for Germany), 1und1 (pretty strange because the settings are the very same on this one, only the name is different) and Vodafone DE-MMS.
The strange thing now is that I can't change any value of the Vodafone DE APN... When I go into its settings, everything ia greyed out. This was the same on the stock ROM...
Now when I create a new APN with the correct provider settings (found via Google on the VF homepage), the phone still won't work. When I put the device aside for a few minutes, the Vodafone Deutschland DE APN is the selected APN again although I never went back to it...
Is there some option to take a deeper look into the modem stats to see what's the problem?
Click to expand...
Click to collapse
Mate you should try installing Stock ROM that might help I think !

.::Alien::. said:
Mate you should try installing Stock ROM that might help I think !
Click to expand...
Click to collapse
I tried that already, but it didn't help. Same problem...
I factory resetted the phone, wiped cache and dalvik cache and then flashed my Vodafone branded stock ROM via Odin that I had on my device when I got it. Didn't help for some reason... But: should I also try to go back to stock ROM via KIES? I haven't tried this method until now...
Edit: About my flashing method: I went from the stock ROM to rooted (via CF Auto root with Odin). For PAC I then flashed TWRP 2.6.0 and then in recovery factory resetted the phone, wiped cache and dalvik and then installed PAC. After that I installed GApps. I used this method before and it worked without any problems...
Edit2: I found this thread, it appears to be the same/a similar problem with the S3: http://forum.xda-developers.com/showthread.php?t=1805709&page=6
Now is there something similar for the S4? I think I tried calling ##72786# on stock ROM and it didn't work...

Gotcher said:
Within Wireless & Networks --> Mobile Networks --> Network Mode? On PAC? It always crashes when I try to change something there. In the PAC bug post this seems to be a known bug, my mode is also set to GSM/WCDMA/LTE. But whenever I enter the settings to change this, only 'LTE' is chosen as option. I don't have LTE on my plan and I read somewhere else that Vodafone has major problems with it's LTE network here in Germany and that it may be better for customers without it to turn it off.
About APN: there is definitely something strange. I can enter the settings and I see three different APNs that were not created by me (they must be the standard carrier ones): they are called Vodafone DE (for Germany), 1und1 (pretty strange because the settings are the very same on this one, only the name is different) and Vodafone DE-MMS.
The strange thing now is that I can't change any value of the Vodafone DE APN... When I go into its settings, everything ia greyed out. This was the same on the stock ROM...
Now when I create a new APN with the correct provider settings (found via Google on the VF homepage), the phone still won't work. When I put the device aside for a few minutes, the Vodafone Deutschland DE APN is the selected APN again although I never went back to it...
Is there some option to take a deeper look into the modem stats to see what's the problem?
Click to expand...
Click to collapse
Delete the unused APNs.
Do you have mobile data?
Also I asume that you're running the latest vertigo's build, because with me GSM/WCDMA/LTE is always selected.
Sent from my GT-I9505 using Tapatalk 4

Sometimes I have mobile data, but only for very limited time; for the majority of time, I don't have mobile data and can not make calls.
I also tried to delete the unused APNs, but still no change =/
I tried to use a different Micro SIM in this device, but the same problem appears. No data, no phone although I have grey reception balks.

any update on this one?!

i9505 Problem

Hi Again Guys,
My phone recently wasn't getting any signal when i flashed to the ROM 4.4.2. So people said to flash back to the stock rom, i have now done that and the WiFi stopped working. I can't even download a ROM manager to try and load another ROM.
I think i've really messed up my phone. I want to wipe everything completely and start from new, then re try flashing to the latest ROM 4.4.2 so i can get my WiFi and Mobile Data working again. I can't get calls without it having a black screen / no sound. My phone keeps turning off every so often.
I think i've missed matched wrong Modems and Baseband Versions?
What information do you need exactly from my phone to give you to try and help? Really need my phone working for work purposes. I will give a donation to a person that helps me fix it completely. (paypa)
Thanks guys.

I was reading ur latest posts and the solution is: HERE
*EDIT: Dial *#1234# and attach the screenshot pls :good:

[Q] Samsung Note 3 N9005 NO SIM Inserted

When I upgrade my Samsung N9005 (European version) to Android 4.4, it does not detect any of my sim cards. I have tried this on three phones I have and am now sure there is a porblem with the firmware not my sim card. I am on China Unicom. I have also tried to insert a sim from a different country, it does not even ask for the pin since to it nothing is inserted. I have tried different region firmwares from HongKong, United Kingdom and Unknown. Please help.

Anyone?
How do I make my posts popular. I always ask questions on this forum and never receive answers. Yet there are 52k people online.

Be patient. You are not special that you should get immediate answers on your topics.
Thought about possible hardware failure? It could go under warranty as well.

Someguyfromhell said:
Be patient. You are not special that you should get immediate answers on your topics.
Thought about possible hardware failure? It could go under warranty as well.
Click to expand...
Click to collapse
Its not a hardware failure. I have three phones which I got after exchanging so this is six in total that have this issue. I also cannot downgrade back to 4.3 which is what I would prefer as for now.

What version of 4.4.2 you have? I need the build number.
I would recommend reflashing firmware, might eliminate those bugs.

Someguyfromhell said:
What version of 4.4.2 you have? I need the build number.
I would recommend reflashing firmware, might eliminate those bugs.
Click to expand...
Click to collapse
I have tried 4.4.2 N9005XXUEND3_N9005OXAEND1_BTU and UK firmware N9005XXUEND3-N9005OXAEND1.

Just to add some detail, my phose Baseband is unknown and when I try to check the IMEI I cannot since it interpretes it as a phone call "Mobile Network not available"

Look around the forum, there are solutions for that. Apparently something went wrong when you updated firmware.
Sent from my SM-N9005 using Tapatalk

brokesergey said:
Just to add some detail, my phose Baseband is unknown and when I try to check the IMEI I cannot since it interpretes it as a phone call "Mobile Network not available"
Click to expand...
Click to collapse
Try re-flashing the entire firmware, or extract only modem files and flash it manually. See the post here: http://forum.xda-developers.com/showpost.php?p=52948152&postcount=13

vndnguyen said:
Try re-flashing the entire firmware, or extract only modem files and flash it manually. See the post here: http://forum.xda-developers.com/showpost.php?p=52948152&postcount=13
Click to expand...
Click to collapse
I'm experiencing the same issue. Flashed a new Temasek CM11 nightly and after booting into the rom for the first time no PIN unlock dialogue appeared. The phone is stuck at "searching for service". My IMEI number is still there and both SIM cards I have tried work perfectly in my iPhone.
I'm still on JB 4.3 bootloader with CMW recovery 6.0.4.5 and baseband is N9005XXUBMI6. Is it possible something got messed up when flashing latest CM? Perhaps baseband/modem firmware outdated?
I'm downloading N9905XXUEND3 and will flash back completely to stock. Will report back here later.

AO7 said:
I'm experiencing the same issue. Flashed a new Temasek CM11 nightly and after booting into the rom for the first time no PIN unlock dialogue appeared. The phone is stuck at "searching for service". My IMEI number is still there and both SIM cards I have tried work perfectly in my iPhone.
I'm still on JB 4.3 bootloader with CMW recovery 6.0.4.5 and baseband is N9005XXUBMI6. Is it possible something got messed up when flashing latest CM? Perhaps baseband/modem firmware outdated?
I'm downloading N9905XXUEND3 and will flash back completely to stock. Will report back here later.
Click to expand...
Click to collapse
Sorry I've never tried CM so I'm not sure what happens.
Please feedback.

vndnguyen said:
Sorry I've never tried CM so I'm not sure what happens.
Please feedback.
Click to expand...
Click to collapse
I have managed to solve the problem.
1. First back up EFS and FSG in case you haven't done that yet. On the N9005 your IMEI information is stored in FSG so do not use any tools that only backup the EFS without the FSG. For tools check here: http://forum.xda-developers.com/showthread.php?t=2611903
2. Flash stock image for N9005. I was still on JB 4.3 with the unlocked bootloader so I flashed JB 4.3 again, didn't bother with KK 4.4 which will lock the bootloader after flashing.
3. Booting back into stock and the SIM PIN entry menu appeared straight away.
4. Flash CWM recovery appropriate to your bootloader 4.3 or 4.4
5. Flash CM
6. SIM PIN entry and cellular works perfectly again
conclusion:
I'm not sure why this happened. Downgrading to a previous CM build did not solve the issue. So I'm reluctant to blame CM itself. Perhaps the recovery was the culprit. Somewhere something must have been corrupted during a flash. Luckily nothing that couldn't be fixed by flashing stock.

[Q] Not Reading Sim Card

Hey so i updated my LG G2 from 24A to 39A, but once I got to 39A my sim card could no longer be read. In the network settings tab it now says unknown and under Mobile network type it says disconnected. I tried bringing it back to stock 24A but it still did not work. I tried another sim card but nothing. Before I updated my phone I made a backup, but when I loaded it up it still did not work. I tried flashing different Roms but no dice. Its weird because I can use wi-fi calling and everything works. It is only when I am not on wi-fi where nothing gets read. Can anyone help me? Any help would be greatly appreciated.
Thanks

are you by any chance having this problem when you try vexxoaosp?

Im not entirely sure which one that is, but I dont think so. Could you provide a link to it so I can try it?

I don't think you should try it then.
Sorry mate, did you do a stock reset with a kdz file fitting your model?
I recommend you to use LG Flash Tool 2014 with a stock kdz file. There is a thread about it here.

I tried that...multiple times lol

Did you contact your service provider? Any warranty left?

I bought it second hand, so unfortunately no warranty

9505 Network lock but it's factory-free

Good evening friends, I have a question about a problem that I have not been able to solve. My S4 version 9505 is free from factory and so it has been for 10 months (I bought it used and that's what they told me) and suddenly in a normal restart it gave me a screen before the launcher that says Unblock or continue ... after that It says that I have a simcard with network blocking. Use Lineage 14.1 and go back to lollipop 5.0.1 stock to see if that solved it but it was not like that. I have imei intact but it is blocked by network.
i would be grateful to who can help me
Thank you

You can try to unlock it by flashing a 4.2.2 mode, root, run regionlockaway, flash stock 5.01 ROM, and see if the phone is network unlocked.
You will not be able to use the menu option listed in this thread but there are some helpful posts: https://forum.xda-developers.com/showthread.php?t=2282683

dfernandopm said:
Good evening friends, I have a question about a problem that I have not been able to solve. My S4 version 9505 is free from factory and so it has been for 10 months (I bought it used and that's what they told me) and suddenly in a normal restart it gave me a screen before the launcher that says Unblock or continue ... after that It says that I have a simcard with network blocking. Use Lineage 14.1 and go back to lollipop 5.0.1 stock to see if that solved it but it was not like that. I have imei intact but it is blocked by network.
i would be grateful to who can help me
Thank you
Click to expand...
Click to collapse
Hello
Your phone is not locked, the SIM card is. Have you set up a pin for the SIM card and forgotten?.....Try another SIM card in the phone to check.

The message that appears on the original post is the same screen I received with my locked sgh-i337m before I unlocked it using regionlockaway.

cooltt said:
Hello
Your phone is not locked, the SIM card is. Have you set up a pin for the SIM card and forgotten?.....Try another SIM card in the phone to check.
Click to expand...
Click to collapse
No friend. ... I appreciate your opinion very much but it is not my case, I have tried several. thank you very much
Sent from my [device_name] using XDA-Developers Legacy app

audit13 said:
You can try to unlock it by flashing a 4.2.2 mode, root, run regionlockaway, flash stock 5.01 ROM, and see if the phone is network unlocked.
You will not be able to use the menu option listed in this thread but there are some helpful posts: https://forum.xda-developers.com/showthread.php?t=2282683
Click to expand...
Click to collapse
thanks friend. I tried with regionlockaway and nothing .... when I installed 4.2.2 I warned
Sent from my [device_name] using XDA-Developers Legacy app

Try this: root the phone, install and run regionlockaway, restore the latest stock ROM using Odin, test the phone.

audit13 said:
Try this: root the phone, install and run regionlockaway, restore the latest stock ROM using Odin, test the phone.
Click to expand...
Click to collapse
I did it exactly like that, but it did not work

Not sure why it didn't work since other XDA members have had success with the method I outlined.
https://forum.xda-developers.com/showpost.php?p=71227945&postcount=1653

audit13 said:
Not sure why it didn't work since other XDA members have had success with the method I outlined.
https://forum.xda-developers.com/showpost.php?p=71227945&postcount=1653
Click to expand...
Click to collapse
imei null when flashing modem I9505_XXUAME2_MODEM.tar
I had to flash a stock ROM again and the imei was recovered, but I still have network blocking

The IMEI goes null because you are flashing a 4.2.2 modem onto a phone with a 5.01 bootloader and flashing the latest modem will restore the imei.
If you followed the steps I outlined and the phone is still network locked, you will need to buy and unlock code.

I'm sorry I had not been able to answer for days.
I could unlock the phone as follows: Install via ODIN I9505XXSHQB1_I9505OLBHOH1_I9505XXSHQB1_HOME.tar then install the modem: I9505DVUAMD8_MODEM.tar, then root, and use Galaxy Unlock app.
I thank all those who helped me here and took the trouble to answer my post.
@audit13
 @cooltt