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[Q] Need help with Nexus S 4G UMTS and custom roms

Hi, I'm new to android and I recently signed up with Mobilicity for a Nexus S 4G.
I've figured out how to root my phone but for some reasons every custom rom I tried is not picking up any signals at all. (except WIFI)
So I am starting to think that it might be the type of signal (UMTS) that Mobilicity offers that doesnt work with custom roms?
Correct me if I'm wrong, and please help me with solutions, Thanks!

darkkame said:
Hi, I'm new to android and I recently signed up with Mobilicity for a Nexus S 4G.
I've figured out how to root my phone but for some reasons every custom rom I tried is not picking up any signals at all. (except WIFI)
So I am starting to think that it might be the type of signal (UMTS) that Mobilicity offers that doesnt work with custom roms?
Correct me if I'm wrong, and please help me with solutions, Thanks!
Click to expand...
Click to collapse
Mobilicity is a GSM carrier. Do you actually have a Nexus S 4G (a CDMA device) or have you been flashing Nexus S 4G Roms onto your device (in which case you are flashing a rom/radio for a CDMA device onto a GSM device)?

krohnjw said:
Mobilicity is a GSM carrier. Do you actually have a Nexus S 4G (a CDMA device) or have you been flashing Nexus S 4G Roms onto your device (in which case you are flashing a rom/radio for a CDMA device onto a GSM device)?
Click to expand...
Click to collapse
hmm, on the box it saids Nexus S but when I try flashing Miui for Nexus S, it wouldn't work unless I'm using the 4G version so i assumed that my phone is 4G.
And the phone status says that my "Mobile network type" is UMTS.

darkkame said:
hmm, on the box it saids Nexus S but when I try flashing Miui for Nexus S, it wouldn't work unless I'm using the 4G version so i assumed that my phone is 4G.
And the phone status says that my "Mobile network type" is UMTS.
Click to expand...
Click to collapse
If you got it from Mobilicity it's the GSM version (AWS frequency, i9020 or i9020T by model number).
If you've flashed a radio for the NS4G (a CDMA device) or the i9020a this is going to break things.
What radio are you currently running? If you can't get service flash back to a stock i9020t ROM and see what you get. You can grab a full stock ROM here: http://forum.xda-developers.com/showthread.php?t=1063664

that's exaclty what's happening to me, i got a nexus said to be a I9020A (under de battery), and on the manual says it's the nexus s 4g. the problem is (the same as darkkame) that the type of signal, in the settings says it's UMTS, so is neither CDMA nor GSM i think.
i live in chile, south america, and that's the problem i'm having with custom roms, particulary with the ice cream sandwich one, it only let me flash the nexus s 4g version of the rom but not the 3g one and i have everything working except the cell reception and 3g signal.
sorry for the poor redaction xD

gnrsenpai said:
that's exaclty what's happening to me, i got a nexus said to be a I9020A (under de battery), and on the manual says it's the nexus s 4g. the problem is (the same as darkkame) that the type of signal, in the settings says it's UMTS, so is neither CDMA nor GSM i think.
i live in chile, south america, and that's the problem i'm having with custom roms, particulary with the ice cream sandwich one, it only let me flash the nexus s 4g version of the rom but not the 3g one and i have everything working except the cell reception and 3g signal.
sorry for the poor redaction xD
Click to expand...
Click to collapse
UMTS is GSM

krohnjw said:
UMTS is GSM
Click to expand...
Click to collapse
thanks for the clarification, then my nexus isn't really the 4g version (despite what it says on the manual), but for some reason the ice cream sandwich rom acknowledge my device as a CDMA when it isn't so it won't le me flash the nexus 3g version of the rom (brings "installation cancelled" on the recovery), only the 4g optimized rom, but that's when i get no cellular reception nor 3g.
just have to wait for the official ics release then

Redownload the GSM version and verify the MD5. Installation Canceled usually means its a bad zip or the updater-script is jacked.
Sent from my Bionix on the Nexus S using XDA App

i found the problem, because i mistakenly thought my nexus was a 4g version ('cause that's what it says on the manual), i followed the rooting and clockmodwork installing procedure for the nexus s 4g variant, now i reverted the procedure, but this time for the 3g version of the phone and voilá i can now install the ice cream sandwich rom and have the cellular reception
maybe this solution applies for the author of this thread too

Can you provide a link to the rom you installed?

[Q] Nexus S No Cell Reception!

Hey guys,
My Nexus S has no cell reception. Tested the sim card and thats fine. I was on the AOSP v3 rom of ics and downgraded via rom manager and then did the official update but I am not getting cell service. Any ideas? I have the i9020A
Thanks in advanced.
Trevor

heinst said:
Hey guys,
My Nexus S has no cell reception. Tested the sim card and thats fine. I was on the AOSP v3 rom of ics and downgraded via rom manager and then did the official update but I am not getting cell service. Any ideas? I have the i9020A
Thanks in advanced.
Trevor
Click to expand...
Click to collapse
You downgraded via rom manager using the stock images section? I believe that is a tmo image with a tmo radio so you'll probably need to flash an att radio for it to work or flash a stock ATT image.
Radio thread: http://forum.xda-developers.com/showthread.php?t=1116884
Stock ROM thread: http://forum.xda-developers.com/showthread.php?t=1063664
Hope this helps. Good luck!

I flashed back to the other ICS ROM I was using before and no cell service. Everything else works but just no bars or internet via the towers. It reads theres a sim though. What do you think this is? I think the hardware gave
UPDATE: Im an idiot and it worked thanks a billion man

[Q] Urgent Help Nedded

I have unlocked nexus s i9023. I flashed lot of roms and somehow it stopped working (no signal at all) with some networks. For example when I was india, it wasn't working with any network(they operate at 900 MHz). But when I moved to US and got a net10 sim card, it worked, and with at&t as well (850 MHz I suppose). But now I got tmobile, which I suppose works with 900Mhz, and its not working.
Conclusion: As far as I know mobile nexus s is not working with network operators who use 900 Mhz, and it works only with 850Mhz band only.
If any of you have any idea what could be be wrong and how to fix then please help me.
Thanks in Advance

I9023 works on all 4 bands. So it should work unless there is some problem with radio. I suggest you flash back Googler stock factory images. That would correct any radio issues. There is a thread in general section which explains the steps for flashing factory images.
Sent from my Nexus S

anshumandash said:
I9023 works on all 4 bands. So it should work unless there is some problem with radio. I suggest you flash back Googler stock factory images. That would correct any radio issues. There is a thread in general section which explains the steps for flashing factory images.
Sent from my Nexus S
Click to expand...
Click to collapse
Yeh it was working on all 4 bands before I tried a crappy MIUI rom, but after that it stopped working for few networks who runs on 900 Mhz.
I did everything.... installed factory image from here, and even tried different flashing radios but nothing worked so far

[Q] Samsung Note 2 / Vodafone LTE issue on custom ROM

Hi,
First time posting, long time reading.
Having issues getting LTE/4G access on my Samsung Note 2 on the Vodafone network in Australia. I am currently running Hashchcek v2.5 ROM on 4.1.2, have a baseband of N7105TDVALK2 and using saberkernel.
According to Vodafone the baseband version N7105TDVDMB2 should have been pushed out with their update to 4.1.2 to allow LTE access.
Does anyone know how I go about getting this latest baseband or getting LTE as a network mode option?
Do I need to obtain the latest CSC/modem and flash with that? If so does anyone know where I can get this from? I have had a good look around and can only find the old Vodafone CSC which I am currently using. Can I just use the Telstra Baseband?
Or am I way off and someone can point me in the right direction?
Thanks

Tried this
beefsta said:
Hi,
First time posting, long time reading.
Having issues getting LTE/4G access on my Samsung Note 2 on the Vodafone network in Australia. I am currently running Hashchcek v2.5 ROM on 4.1.2, have a baseband of N7105TDVALK2 and using saberkernel.
According to Vodafone the baseband version N7105TDVDMB2 should have been pushed out with their update to 4.1.2 to allow LTE access.
Does anyone know how I go about getting this latest baseband or getting LTE as a network mode option?
Do I need to obtain the latest CSC/modem and flash with that? If so does anyone know where I can get this from? I have had a good look around and can only find the old Vodafone CSC which I am currently using. Can I just use the Telstra Baseband?
Or am I way off and someone can point me in the right direction?
Thanks
Click to expand...
Click to collapse
Installed the following and so far so good. Not in a 4G area ATM but will update once I have done some more testing. So far the 3G speed tests are noticeably better.
hxxps://docs.google.com/uc?id=0B689BNd5KqyRZXJjNnE1QWZtak0&export=download

[Q] S3 i9305 Limited / No Network Connect - Please Help

Hi Everyone,
I'm using a Samsung Galaxsy S3 LTE i9305 and it has been working flawlessly in Australia on a stock and custom ROM.
I'm currently travelling in the US and I have purchased a T-Mobile prepaid SIM. After inserting the new SIM I have been able to get a edge network connection and making phone calls works fine. However, ive only been able to get a Edge data connection, no 2G, 3G or 4G. This occurs in all locations, I have been in 4 major cities and it is the same.
I called T-Mobile and we checked all the settings. They were unable to find anything wrong and escalated my issue to the 3rd level team. I'm waiting to hear from them. In the mean time I have tried the following wihout succes. The phone is running cyogenmod 10.2 Nightly, I upgraded this to the latest 11.x Nightly and the result was no network connection at all. Furthermore after the upgrade I was not able to enter any APN settings, it was as if no SIM was insirted. Next I tried downgrading to Cyogenmod 10.1 Stable release and the result was the same. Finally I tried installing Paranoid Android 3.99 RC1 and again same result, no network at all.
Im running out of ideas. My next move is to try a stock rom but I hope I can avoid it because it is a large download and I have no access to a computer. What do you guys think could be causing it?

Bump

nraic said:
Bump
Click to expand...
Click to collapse
Bump

Reboot your phone
maybe it helps to reboot your phone.

nraic said:
Hi Everyone,
I'm using a Samsung Galaxsy S3 LTE i9305 and it has been working flawlessly in Australia on a stock and custom ROM.
[cut]
Im running out of ideas. My next move is to try a stock rom but I hope I can avoid it because it is a large download and I have no access to a computer. What do you guys think could be causing it?
Click to expand...
Click to collapse
What is your radio version ? Is yours International version ?