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i9020A (ATT) completely lost 3G on all ROMs, help!

I've completely lost 3G ability on my NS, and I'm not sure what happened.
Here's my order of tweaks:
CM7 nightly (with 3G)
MIUI (with 3G)
ICS rom from SDK (no more 3G!)
ICS from kwiboo (no 3G)
ICS from koush (no 3G)
CM7 stable (no 3G)
I guess sometime during my playtime with the ICS from SDK build, something messed something up and subsequently I cannot get 3G anymore, regardless of ROM.
I'm not sure where even to begin troubleshooting.
- Yes, "use only 2G networks" is unchecked
- My APN should be correct, as they are the ones that loaded automatically from the ROMs. That has always worked before
Anyone have any ideas? I'm desperate for help. I haven't had 3G for what feels like a month!

Here http://forum.xda-developers.com/showthread.php?p=19424857 in this post there is a link to the radios try flashing one of those to see if that fixes things. If not try flashing a stock unrooted rom and start over
Sent from my Nexus S using Tapatalk

You know what? A new radio worked! I don't know why I didn't think of it before. Seems so easy in hindsight.
This brings up another interesting thing. Seems like a lot of the radios that used to give me 3g don't give it to me anymore, including the most popular ones people are using. That's weird...
edit: Actually, no radio issues anymore. My old radio gets 3g again, as well as others. I just needed to rotate the radio versions a few times and reboot a few more times and it fixed itself. Totally weird, but no more problems!

I had the same issue on AT&T 2 nights ago. It turned out that it was an AT&T network issue which was confirmed by tech. support.

[Q] Help! Unable to acquire network signal. Tried everything!

Hello XDA,
I've been having problems with my Nexus S and I've tried everything I can think of to fix the problem but failed. Just wondering if someone would be able to help me.
Background:
I was using ICS Brainmaster's Koush version. I've been following the ICS builds since Drew Garen's SDK port. Then onto Kwiboos then I was flashing which ever ones I could get my hands on. Never a problem with installing on top after clearing cache. I had tried full wipes when I had problems but I installed v4-6 on top of the previous build.
The Problem:
So on the latest Brainmaster's build, one day I was low on battery so I turned on 2G networks only (not the first time I've done this on this rom) and proceeded with using it. When I was able to get a charger I tried to switch my 3G back on. At this point I could not get onto 3G anymore. Only edge. I tried toggling airplane mode, reboots, and playing around with the *#*#4636#*#* settings. Doesn't work.
So I gave up trying to fix my ICS rom and was thinking a full wipe would help. So I did a full wipe and installed the latest Brainmaster's rom (Koush ver). My memory fails me a little bit now but from what I remembered, on reboot I only had EDGE still. I tried Kwiboos ICS rom same thing. I tried Koush's b11 version same thing. I even tried a regular CM 7.1 rom and still no 3G.
At this point my phone isn't even connecting to EDGE anymore as well. I wasn't sure what was making it worse or what was fixing it. I even tried switching radios to the newest radio for i9020a and also reverted back to my stock radio for i9020a. I even tried the XX radios like the KD1 (the one I was on before all the problems) and the newest one as well.
In the "About Phone" section it shows that I don't have a network at all. When I try to search for networks I cannot see Rogers anymore but instead only one weird network 302490 (it stands for the Wind Carrier network).
I give up and hope that XDA has some ideas for me.
TL;DR
what I have tried
-Wiping does not help
-using different APNs (Rogers has two APNs)
-using different radios
-using different roms
-I even switched my sim card to my sister's NS and confirmed my 3G still works. I also tested my 3G on an Atrix and it works.
-restoring to an old nandroid didn't work
-playing around with the *#*#4636#*#* didn't help (like switching to GSM (auto) WCDMA etc, AND changing radio bands to USA)

xqz said:
Hello XDA,
I've been having problems with my Nexus S and I've tried everything I can think of to fix the problem but failed. Just wondering if someone would be able to help me.
Background:
I was using ICS Brainmaster's Koush version. I've been following the ICS builds since Drew Garen's SDK port. Then onto Kwiboos then I was flashing which ever ones I could get my hands on. Never a problem with installing on top after clearing cache. I had tried full wipes when I had problems but I installed v4-6 on top of the previous build.
The Problem:
So on the latest Brainmaster's build, one day I was low on battery so I turned on 2G networks only (not the first time I've done this on this rom) and proceeded with using it. When I was able to get a charger I tried to switch my 3G back on. At this point I could not get onto 3G anymore. Only edge. I tried toggling airplane mode, reboots, and playing around with the *#*#4636#*#* settings. Doesn't work.
So I gave up trying to fix my ICS rom and was thinking a full wipe would help. So I did a full wipe and installed the latest Brainmaster's rom (Koush ver). My memory fails me a little bit now but from what I remembered, on reboot I only had EDGE still. I tried Kwiboos ICS rom same thing. I tried Koush's b11 version same thing. I even tried a regular CM 7.1 rom and still no 3G.
At this point my phone isn't even connecting to EDGE anymore as well. I wasn't sure what was making it worse or what was fixing it. I even tried switching radios to the newest radio for i9020a and also reverted back to my stock radio for i9020a. I even tried the XX radios like the KD1 (the one I was on before all the problems) and the newest one as well.
In the "About Phone" section it shows that I don't have a network at all. When I try to search for networks I cannot see Rogers anymore but instead only one weird network 302490 (it stands for the Wind Carrier network).
I give up and hope that XDA has some ideas for me.
TL;DR
what I have tried
-using different APNs (Rogers has two APNs)
-using different radios
-using different roms
-I even switched my sim card to my sister's NS and confirmed my 3G still works. I also tested my 3G on an Atrix and it works.
-restoring to an old nandroid didn't work
-playing around with the *#*#4636#*#* didn't help (like switching to GSM (auto) WCDMA etc, AND changing radio bands to USA)
Click to expand...
Click to collapse
isnt the KD1 radio for the 9020t not the 9020a? thats my favorite radio to use with my 9020t on tmobiles network.

there is a KD1 for all versions I'm pretty sure. I was using it for the last few weeks with no problems anyways. I switched back to the ones specific for i9020a as well but it didn't help me
Edit: The radio used from this thread: http://forum.xda-developers.com/showthread.php?t=1116884
"Radio for I9020a/I9020t/I9023
Radio JK1/Radio JK8
Radio KB1
Radio KB3
Radio KD1
Radio KF1"

No one has any idea? Simms22?
If not I think I'm going to restore, lock, and try to get a warranty from Rogers..

First make sure you have setup your gmail over wifi. Pull the sim out. Keep rebooting your phone(this can take a while) until it says no sim card at the lock screen. Pull your cover and slide your sim in while its on. The put it in airplane mode and turn airplane mode off and it should connect.
You may also want to try toggling airplane mode on and off between reboots. Sometimes the airplane won't go away when you do this until you reboot, don't worry about that. I've also had better luck getting this to work while connected to Wi-Fi.
I'd also try to minimize kernel flashing after you get it working, it usually causes total network loss again when you wipe dalvik. Putting you back at square one. Also be patient this can take a while. I'd also minimize reboots as they can force total network loss as well.
Also I've already sent my phone in for this issue and Samsung rejected the claim stating there was corrosion due to water damage. But magically all of my water indicators are still white.
Sent from my Nexus S using xda premium

No 3G / EvDo

For some reason I cannot connect to 3G. I can only get 4G or 1x. I've been running cm10 for awhile and I've switched back and forth between different ROMs including back to stock and other TouchWiz ROMs. I've not really sure when this happened because I didn't really notice at first, seeing as how I'm in a strong LTE area. I've tried using phone info and using the settings in cm10 under mobile networks. The strangest part of it is that in phone info, if I set it to EvDo only, my bars go empty.
I've updated to the latest modem, and like I said, I've tried different ROMs and even different kernels. I've used Odin to get all the way back to stock unrooted and everything. I can't figure out what could be causing this.
I lost my IMEI weeks ago but got it back so I don't think that's the issue.
Any help that I get can get would be really appreciated.
Thanks

[Q] Skyrocket on Tmoblie dilemma

So, I got a AT&T Skyrocket s2 i727 from amazon. its already unlocked and i noticed it was stuck on edge speeds when i put in my sim card. I researched why it was on google and came across this site, which i have to say is amazing!. i have read every topic there is about how to root/unroot, flash roms, radios, kernels, etc. over the last i dunno, week or so. So i decided to give it a try since everything is step by step, which im not illierate towards, i understood what it all meant. first thing i started out with is odim and flashed the cwm touch for the skyrocket, which was easy. i then researched some more and seen i wanted to make this phone on tmoblies 4g service, which here in iowa is called IWireless, anything tmoblie works with this since they are an affiliate of tmoblie. I started out downloading all the radios, which i have:
cwm-tmob-kl1-radio
Telus_SGH-T989D_Kj3_radio
Tmo_SGH-T989_KID_radio
Tmo_SGH-T879-UVLG3_radio
Tmo_SGH-T989_VK1_radio
Tmo_SGH-T989_UVLE1_radio
Blaze_4G_LB7_ICS_Radio_MOD
so as u can see ive got pretty much all of them. then i found which rom i wanted to use, i downloaded CM9 and CM10. for the CM9 build i seen the best kernel for it: InstigatorX-CM9-Kernel3-v6.0.3. also downloaded the gapps for each cm build.
then i followed the instructions the CM team left, backup, factory reset, format, install the radio, then cm os and finally the gapps.
I did all this with each radio and each cm, everything. no i did not brick my phone im alot smarter than that lol. whenever i try a radio, usually im just stuck on the edge speeds. i go into my settings on the phone and it wont save me selecting the lte/gsm/wcdma, just stays on the wcdma preferred....when i did each radio i started from fresh, cleaned everything out, even tried the davlik wipe in the advanced settings in cwmtouch.
so i read in other forums that ppl tried to flash over radios. that didnt work, i was left with no signal at all.
i still have the imei number on my phone when i dial *#06#, so i havent lost that, but every radio i use my baseband version says unknown.
also when i enter the service code in for cm10 and cm9, it wont save my selction of what bands id like to use....
so any help here would be appreciated...im losing my mind over this and it sucks...thanks for anyones help, i need it.
Edit:
switched back to stock ics from my recovery, installed the blaze radio, showed i had 4g, but had no bars. i called someone and after i called them it went back to edge. went to search for networks and all i can get is E again. under settings it shows im on edge 2....so im close but obvisously not close enough. i live in a major city here in iowa and i live a few blocks from a wireless tower...any ideas?

dragonkev_ia said:
So, I got a AT&T Skyrocket s2 i727 from amazon. its already unlocked and i noticed it was stuck on edge speeds when i put in my sim card. I researched why it was on google and came across this site, which i have to say is amazing!. i have read every topic there is about how to root/unroot, flash roms, radios, kernels, etc. over the last i dunno, week or so. So i decided to give it a try since everything is step by step, which im not illierate towards, i understood what it all meant. first thing i started out with is odim and flashed the cwm touch for the skyrocket, which was easy. i then researched some more and seen i wanted to make this phone on tmoblies 4g service, which here in iowa is called IWireless, anything tmoblie works with this since they are an affiliate of tmoblie. I started out downloading all the radios, which i have:
cwm-tmob-kl1-radio
Telus_SGH-T989D_Kj3_radio
Tmo_SGH-T989_KID_radio
Tmo_SGH-T879-UVLG3_radio
Tmo_SGH-T989_VK1_radio
Tmo_SGH-T989_UVLE1_radio
Blaze_4G_LB7_ICS_Radio_MOD
so as u can see ive got pretty much all of them. then i found which rom i wanted to use, i downloaded CM9 and CM10. for the CM9 build i seen the best kernel for it: InstigatorX-CM9-Kernel3-v6.0.3. also downloaded the gapps for each cm build.
then i followed the instructions the CM team left, backup, factory reset, format, install the radio, then cm os and finally the gapps.
I did all this with each radio and each cm, everything. no i did not brick my phone im alot smarter than that lol. whenever i try a radio, usually im just stuck on the edge speeds. i go into my settings on the phone and it wont save me selecting the lte/gsm/wcdma, just stays on the wcdma preferred....when i did each radio i started from fresh, cleaned everything out, even tried the davlik wipe in the advanced settings in cwmtouch.
so i read in other forums that ppl tried to flash over radios. that didnt work, i was left with no signal at all.
i still have the imei number on my phone when i dial *#06#, so i havent lost that, but every radio i use my baseband version says unknown.
also when i enter the service code in for cm10 and cm9, it wont save my selction of what bands id like to use....
so any help here would be appreciated...im losing my mind over this and it sucks...thanks for anyones help, i need it.
Edit:
switched back to stock ics from my recovery, installed the blaze radio, showed i had 4g, but had no bars. i called someone and after i called them it went back to edge. went to search for networks and all i can get is E again. under settings it shows im on edge 2....so im close but obvisously not close enough. i live in a major city here in iowa and i live a few blocks from a wireless tower...any ideas?
Click to expand...
Click to collapse
Flash a T-mo radio that gets you on the network, then look around and find the proper APN settings for your provider. You will have to go into the APN settings on your phone and create a new APN with those specific settings for it to work properly. I am not sure what those settings are for T-mo but you should be able to find them with the search feature.

hitekredneck said:
Flash a T-mo radio that gets you on the network, then look around and find the proper APN settings for your provider. You will have to go into the APN settings on your phone and create a new APN with those specific settings for it to work properly. I am not sure what those settings are for T-mo but you should be able to find them with the search feature.
Click to expand...
Click to collapse
so ive went back to the recovery, which the phone was set at before everything, flashed the radios of blaze and the uvle1 and it shows i have 4g but it bareley even runs. also each time i flash a new radio my apn settings are there, iwireless automatically downloads them to ur phone when u turn it on, and i verified the apn settings with another iwireless phone, an alcatel 995(4g phone). and now i can send a text message, the other phone receives it but the other phone doesnt receive mine. any other ideas? im going to try flahsing all the tmo radios to the phone and see what i can do. also is the radio and the modem the same thing? do i need to find a tmo modem and flash it on there and then a radio?
EDIT: nvm radio and modem same thing it seems like...lol. anyways ive tried the other radios, i completely lost signal with them as to they wont work. does anyone have any other radios that might work? i dont care if it gets 4g just at least 3g lol. im just geting tired of working on this and about to give up this really blows.

dragonkev_ia said:
so ive went back to the recovery, which the phone was set at before everything, flashed the radios of blaze and the uvle1 and it shows i have 4g but it bareley even runs. also each time i flash a new radio my apn settings are there, iwireless automatically downloads them to ur phone when u turn it on, and i verified the apn settings with another iwireless phone, an alcatel 995(4g phone). and now i can send a text message, the other phone receives it but the other phone doesnt receive mine. any other ideas? im going to try flahsing all the tmo radios to the phone and see what i can do. also is the radio and the modem the same thing? do i need to find a tmo modem and flash it on there and then a radio?
EDIT: nvm radio and modem same thing it seems like...lol. anyways ive tried the other radios, i completely lost signal with them as to they wont work. does anyone have any other radios that might work? i dont care if it gets 4g just at least 3g lol. im just geting tired of working on this and about to give up this really blows.
Click to expand...
Click to collapse
Modem and radio are same thing. Other than an APN issue I know of nothing else other than a #*number combination to enable lte settings. I am not sure what that combination is though as I live in a not-lte area and have not needed it. You may want to search the SkyJB thread as I think it was discussed at length in there. And I would try each and every one of the t-mo radios/modems as you might actually find one that works to enable 3g/4g in your particular area.

[Q] Galaxy S3 I535 No Service After KitKat Flash (4.4.4)

Hello everyone. I was hoping that some of you that are more knowledgeable about this stuff could help me out here. I recently flashed from CM 10.2 to KitKat (4.4.4), which everything went smoothly for the most part. However, I've noticed that my phone constantly has no service. I should probably state that I live in an area with very low service to begin with, but prior to the flash I was able to get at least a bar inside my house. Now, I'm unable to get anything.
The first thing I could think of to check was my settings in the phone. The data is enabled, CDMA Roaming mode is set to automatic, CDMA subscription is set to RUIM / SIM, and the Preferred Network Type was Global. I wasn't familiar with the global setting as I was used to seeing the LTE / CDMA / EvDo options there. So, when I clicked on it, it now gives LTE, 3g, 2g, 1x, and Global as options. I tried changing it to 3g, but the changes would not save that way. The only way I could get them to save was to power off the phone, take the sim card out and put it back in, and then reboot and switch them. Once i pick a new setting (which is now set on 3g), it locks it and I can't change it again without removing sim card.
When I look in About Phone > Status section, I'm seeing the network says searching for service. The mobile network type is unknown. The service state is out of service, and the mobile network state is disconnected.
Is there anything I can do to fix this issue? If so, I would truly appreciate any type of guidance you guys or gals could give me. Thanks!

I didn't read your entire post but myself and several others have reported signal issues after 4.4.4 flashes on all different ROM types. I think 4.4.4 is just picky about what firmware and baseband you're running. I flashed a few different RPM packages too but in the end I got lucky flashing the BLK3 modem and it seemed to fix my issues. I had noticeably poor signal strength most of the time and a couple times I would look down at my phone and I'd have no signal at all.
Maybe a dev or expert can shed some light on the root of the issue. I don't know enough about under the hood stuff to make an expert diagnosis.
Edit: The unanimous fix that everyone appears to agree on is to flash the MF1 AIO (all in one) package and then flash the ML1 modem only. Problem is finding a legit source for the MF1 aio package seems to be up in the air.
Like I said though, I didn't even do this. I was just trying all kinds of combinations of modems/aio's/ and rpm's and I got lucky. 2 days now with a solid signal at all times. LTE speeds are blazing too, 45 down and 10 up.

Check ur imei number. Or flash a backup and see if that fixes ur problem.
Sent from my SCH-I535 using XDA Free mobile app

jayjr1105 said:
Like I said though, I didn't even do this. I was just trying all kinds of combinations of modems/aio's/ and rpm's and I got lucky. 2 days now with a solid signal at all times. LTE speeds are blazing too, 45 down and 10 up.
Click to expand...
Click to collapse
Can you share the specific steps you took? What worked for you and where can we download it from?
thanks!