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
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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
Related
Ok, so I picked up the new Telus Defy with the 850/1900 3g band for use with AT&T and it works great with 3g speeds better than I was getting with my Atrix.
So far, I've installed MIUI and OCed it and am pretty happy with the phone, but am hesitant to really start playing with it as I can't seem to find a Telus OE SBF - anyone have one?
Also, can someone tell me if the baseband changer included with CM7 be able to retain the 850/1900 3g bands?
Thanks guys!
if you got the original ROM running right now, grab the baseband, zip it, post it here, and I do a compare to tell you if it's included or not. You need to copy this folder: /system/etc/motorola/bp_nvm_default
If its a new one I would like to include it in the Basebandswitcher.
These US Basebands are included in the Basebandswitcher:
US T-Mobile 3.4.2-107-4 Frequency Bands: 850/1700/2100MHz
US T-Mobile 3.4.2-107-9 Frequency Bands: 850/1700/2100MHz
US T-Mobile 6.xx.0 Frequency Bands: 850/1700/2100MHz
Have a look at the Basebandswitcherthread: http://forum.xda-developers.com/showthread.php?t=1052745
Sqoerk said:
if you got the original ROM running right now, grab the baseband, zip it, post it here, and I do a compare to tell you if it's included or not. You need to copy this folder: /system/etc/motorola/bp_nvm_default
If its a new one I would like to include it in the Basebandswitcher.
These US Basebands are included in the Basebandswitcher:
US T-Mobile 3.4.2-107-4 Frequency Bands: 850/1700/2100MHz
US T-Mobile 3.4.2-107-9 Frequency Bands: 850/1700/2100MHz
US T-Mobile 6.xx.0 Frequency Bands: 850/1700/2100MHz
Have a look at the Basebandswitcherthread: http://forum.xda-developers.com/showthread.php?t=1052745
Click to expand...
Click to collapse
Didn't realize that the baseband was just a folder under system - thought it was a separately flashed partition.
Anyways, here is a copy of the Baseband that came with the Canadian Telus Defy 850/1900.
Let us know how it compares to what you already have in the switcher!
I'll post back here, thanks for the Baseband. Can you post some infos about the ROM you currently use? A screenshot from the telefoninfo for example?
Does the baseband also rely on the firmware that was flashed to the phone?
Anotherwords, if you flash an sbf for a 900/2100 market to a phone with the 850/1900 bands, can you just use the baseband switcher and select the 850/1900 bands, or do you also need to flash the corresponding baseband partition?
dew.man said:
Does the baseband also rely on the firmware that was flashed to the phone?
Anotherwords, if you flash an sbf for a 900/2100 market to a phone with the 850/1900 bands, can you just use the baseband switcher and select the 850/1900 bands, or do you also need to flash the corresponding baseband partition?
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Click to collapse
There's no spezial parition for the basebands. When you select a baseband for your region/contry/provider you'll be fine no matter what you flashed before
Having a little trouble here with the baseband:
Started with an unlocked Telus Defy (850/1900). With the stock firmware and on the ATT network I was getting great up/down speeds - better than with my ATT Atrix.
After making a backup, I flashed NORDIC and CM7, and using the baseband switcher built it, I now get (relatively) slow Internet connectivity regardless if I use TMobile (850/2100) or Argentina (850/1900).
So I tried copying the bp_nvm_default folder from my original Telus backup to the phone running CM7, but now get no service! Is there an additional setting I need to change? Maybe one of the dbs? I'd really like to get the Telus baseband working with CM7!!!
I have a wcdma 900/2100 one and flashed T-Mobile rom, and no way to connect to T-Mobile or any hspa provider in north america
This is by far the strangest problem I'm facing with my Nexus S
I've two SIM cards from two different networks. one is GSM 900 and anothe is GSM 1800
Both the SIMs are perfectly ok and functioning very well in my Nokia X2.
But one of the SIMs (GSM 900) is not getting any network in my Nexus S.
Interestingly I've been using this very SIM (GSM 900) in my nexus for last one month.
Just to give a background, I'm facing this problem when I flashed the latest 2.3.7 stock ROM.
I tried flashing other ROMs aswell...Currenyly I'm on MIUI...but no Luck ! And Yes, the Other SIM is working absolutely fine with my Nexus and fine with both the ROMS !
Please Help !
If I'm not mistaken I believe 2.3.7 is an update for nexus s 4g models only and not GSM. That is a very good chance as to why your network doesn't work.
Sent from my Nexus S 4G using Tapatalk
drtdiver83 said:
If I'm not mistaken I believe 2.3.7 is an update for nexus s 4g models only and not GSM. That is a very good chance as to why your network doesn't work.
Sent from my Nexus S 4G using Tapatalk
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Click to collapse
But it was Getting network. And My other SIM is getting network in that OS.
BTW, I've flashed a different ROM (MIUI)....No luck with the new ROM...
frequency base band problems perhaps ?
Yes, its Reading 1800 SIMs but not 900 SIMS.
all what you said so far indicates that the problem was caused by the new binary.
it seems the hardware is working fine.
what is the software version of your phone?
download an official version of Nexus S and you'll be fine.
tell me what you see in the "about phone"
Android Version: 2.3.5
Baseband Version: I9020XXKD1
Currently I'm in MIUI. Searching for the official version of 2.3.4
uralpongkhi said:
This is by far the strangest problem I'm facing with my Nexus S
I've two SIM cards from two different networks. one is GSM 900 and anothe is GSM 1800
Both the SIMs are perfectly ok and functioning very well in my Nokia X2.
But one of the SIMs (GSM 900) is not getting any network in my Nexus S.
Interestingly I've been using this very SIM (GSM 900) in my nexus for last one month.
Just to give a background, I'm facing this problem when I flashed the latest 2.3.7 stock ROM.
I tried flashing other ROMs aswell...Currenyly I'm on MIUI...but no Luck ! And Yes, the Other SIM is working absolutely fine with my Nexus and fine with both the ROMS !
Please Help !
Click to expand...
Click to collapse
2.3.7 is for the cdma nexus s 4g not a GSM model. Try reflashing the correct radios for your phone.
Sent from my Nexus S 4G using xda premium
I've tried Flashing Radios. But Yet its the same scenario !
Getting network with a GSM 1800 sim. Not with GSM 900 SIM (Unfortunately this is my official number)
Can anyone suggest the exact stock ROM for my sns. I tried to search here in XDA, but not finding the exact one.
the sticker in back says my SNS model is GT-I9020
Some files may stuck in /system partition when you flash something, and good idea is to format /system from CWM recovery (you can find it under mounts and storage section) and flash rooted flash rom from here - http://forum.xda-developers.com/showthread.php?t=1063664.
It's always a bad thing to flash something that is not meant for your device.
Formating /system before you flash stock rom. Hope that could fix your problem too, but I'm not sure . Just a suggestion ...
Mafia303 said:
all what you said so far indicates that the problem was caused by the new binary.
it seems the hardware is working fine.
what is the software version of your phone?
download an official version of Nexus S and you'll be fine.
tell me what you see in the "about phone"
Click to expand...
Click to collapse
I've flashed this from Google
http://android.clients.google.com/p...206299fe6.signed-soju-ota-121341.da820629.zip
Now my about phone looks like this :
Androd Version : 2.3.6
Baseband: I9020AUCKF1
Build No. GRk39C
Yet, its not getting network.
Should I take it that I've lost my Nexus.
Thanks for you reply Tenhi.
I tried formating Everything ! and also Flashed the Stcok ROM (NSGSM-GRJ22-deodexed-KD1-rooted)
But no Luck.
Interestingly, today I found that the set is getting network in Some places, mostly where the network strength is very strong. And functioning very well with GSM 1900 carriers. But facing the problem with GSM 900 carriers only.
Isn't there anyway to get back to Factory Settings or something like this...?
Don't know what else to say. Apparently the NS4G 2.3.7 ROM changed something permanently, and you can't reverse it with flashing another ROM/Radio/Kernel. Unfortunately I don't have any more suggestions . Hope you will find a way to fix it ...
Yet to get a way to fix it.
Strange problem I'm in.
Now looking for a nandroid backup. (Downloading this http://forum.xda-developers.com/showthread.php?t=1059914)
Lets see whether it solve the problem or not.
At this point I'm loosing hope...
Tenhi said:
Don't know what else to say. Apparently the NS4G 2.3.7 ROM changed something permanently, and you can't reverse it with flashing another ROM/Radio/Kernel. Unfortunately I don't have any more suggestions . Hope you will find a way to fix it ...
Click to expand...
Click to collapse
I had one Stock ROM backup (2.3.3). I flashed it today. Which updated the Radio to KB3 also.
But the problem persisted. Then I took the offcial update to 2.3.4 using the push update.
Yet the problem is not fixed. Not getting any clue on what happened !
I've tried two different operators who run GSM 900 and its not getting network with them.
But There is no problem with GSM 1800 operators. Its running smoothly with GSM 1800 SIM.
Alhamdulillah, the problem has been solved.
A OTA update to 2.3.6 has solved the problem for me.
First I flashed 2.3.3, just after flashing it prompted for a update to 2.3.4 and a day after it prompted for a update to 2.3.6.
Which eventually solved the problem
Thanks for your help guys.
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?
hi, im new to this and just signed up. I just got an htc inspire but problem is im from Ghana and my network does not support 4g so i need to flash a radio with 3g capabilities. I have tried going through most threads but there are so many and im confused cos im scared to brick. Could i get help with rooting and flashing a new radio which would give me 3g? Thank you. I also apologize if i posted in the wrong place.
Sorry to tell you but you wont be able to get 3g with the inspire. In Ghana 3g is run in the 900 and 2100 frequency. The inspire only supports 850 and 1900. This is a hardware thing and no amount of flashing radios will change that.
So you are stuck on edge/2g
Sent from my Desire HD using XDA App
thank you
thank you very much for the info. Im very grateful
I recently bought an S3 SCH-I535 Verizon (CDMA) and I managed to run with Phone release Info.apk GSM Global Network a line, what I have now with ICS 4.0.4 and from there I could not update to JB via CWM, there is some JB custom rom or kernel that has the same option to change the overall network? either via Odin or CWM, I tried several and with no option appears. In advance thank you very much![/SIZE] excuse my English:good:
Tutef said:
I recently bought an S3 SCH-I535 Verizon (CDMA) and I managed to run with Phone release Info.apk GSM Global Network a line, what I have now with ICS 4.0.4 and from there I could not update to JB via CWM, there is some JB custom rom or kernel that has the same option to change the overall network? either via Odin or CWM, I tried several and with no option appears. In advance thank you very much![/SIZE] excuse my English:good:
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Click to collapse
Im actually running 4.1.1 with all the mods for GSM and is working, the data speed can't be faster than Edge (E) simple because the Bands are different from LA, the S3 from verizon only have 2100 so we are out f luck for more speed.
But yes even with the stock ROM you can re install everything to make GSM work again.
jmberumenb said:
Im actually running 4.1.1 with all the mods for GSM and is working, the data speed can't be faster than Edge (E) simple because the Bands are different from LA, the S3 from verizon only have 2100 so we are out f luck for more speed.
But yes even with the stock ROM you can re install everything to make GSM work again.
Click to expand...
Click to collapse
Thank you, you will have the link to follow to the letter and to enjoy the 4.1.1? this would help much since there is much information and I want to avoid mixed brick my team