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[Q] Radio disconnects!

Here is whats happening! I go into an awful area with no cell service and when i return into an area with good service... It shows all my bars, 3G icon, but its all grayed out and will not return with color... Also i have no data connectivity at all. The only way to resolve this problem is a reboot. I have the Nexus s 4G KL1 radio... This has happened twice in 2 days. Can anybody tell me what this could be? I tried the KL2 radio and the same thing happened. So I went back to KL1. I am running Cyanogenmod 7.1 stable. Any help would be appreciated, I like this phone and dont want to have to go back to my slow Evo.

Happens on ICS ROMs. I switched back to GB because of that issue.

OHHH ok that makes sense since i was on an ics rom... That sux i love the ics roms to. Is this an issue they know about and are working on?

Yes I am sure the devs know about this issue. A lot of people already reported this issue on the ROM's threads. I think there was a fix in the CM9 repositories that was merged this week.

well thats good news since were i live its not good service and im in and out of service a lot. Thanks for chiming in and letting me know! I was wondering if i had a bad radio or some thing lol...

This happens to my I9020T as well (with stock ICS, Pixel ROM, and Brainmaster's Stock and MIUI ICS ROMs). So, it's definitely an ICS issue. My network connection won't reconnect after I ride the subway (underground, where there's no signal) for about an hour. The only way to fix it is by doing a reboot (enabling and disabling Airplane mode doesn't fix it).
I just tried switching radios: from KI1 to KF1. I'll update on the result later tonight.

Sounds like exactly what happened to me.
I went back to gingerbread. I haven't had the issue since!

Just out of curiosity have you tried the KL2 radio with CM9/Latest nightly and then toggle your Data Enabled or the data roaming? If that works it might save you the reboot. Settings, wireless & Networks/more, Mobile networks, Data enabled.
You could try toggling the data roaming too.

Yup tried it already

davidstjohn1 said:
Yup tried it already
Click to expand...
Click to collapse
Ok it was worth a shot. When I travel to the UP, I get no data service what so ever. So I feel your pain.

wild1z said:
Just out of curiosity have you tried the KL2 radio with CM9/Latest nightly and then toggle your Data Enabled or the data roaming? If that works it might save you the reboot. Settings, wireless & Networks/more, Mobile networks, Data enabled.
You could try toggling the data roaming too.
Click to expand...
Click to collapse
I've tried enabling-disabling Data as well, and it doesn't fix it.
The weird thing is the same issue happened to my girlfriend's T-Mobile G2 with Gingerbread last week, when I unchecked the "Use only 2G network" setting on her phone and forgot to check it back. So, when she told me the issue when she got home, I re-enabled the "Use only 2G network" setting again, and her phone haven't had the reconnect issue ever since.
So, my speculation right now is this reconnect to network failure issue has something to do with the Nexus S' 3G/4G network type setting.

I definitely think you're right

I am having somewhat the same problem.
My phone keeps switching from UMTS:3 to HSDPA and back to UMTS:3
This is draining the hell out of my battery. But when I have it on EDGE 2G I'm getting good battery life.

the issue is not that big for me. I just give it a few moments with it in sleep and when I go to use it again it fixes its self.
Sent from my Nexus S using xda premium

Update!!!! I have since switch off of the I c s rom. I have not had the incident happen even 1 time since doing so. I am totally convinced it's on ice cream sandwich roms.

IIIV said:
This happens to my I9020T as well (with stock ICS, Pixel ROM, and Brainmaster's Stock and MIUI ICS ROMs). So, it's definitely an ICS issue. My network connection won't reconnect after I ride the subway (underground, where there's no signal) for about an hour. The only way to fix it is by doing a reboot (enabling and disabling Airplane mode doesn't fix it).
I just tried switching radios: from KI1 to KF1. I'll update on the result later tonight.
Click to expand...
Click to collapse
Just an update: Switching radios didn't fix it. Had the same issue after taking the subway yesterday.

IIIV said:
Just an update: Switching radios didn't fix it. Had the same issue after taking the subway yesterday.
Click to expand...
Click to collapse
I doubt the radio would make a difference. I think the issue lies in the Phone application.
I could be misinformed here, but if i recall correctly, our phones radio is relatively stupid as far as radios go, and the intelligent parts are actually done as a part of the phone application. This only applies to CDMA Variants of the Nexus S, but it could be the reason that the ICS update was pulled (As thats where CM and others get the ICS version of the phone app.).

After taking the subway for about an hour last night, my NS actually reconnected when I got back up to ground level. One thing that I didn't do is listen to music (PowerAmp); I was always listening to music when I had those network reconnect issues.
Anyway, I hope this issue gets fixed in the upcoming official Google ICS update, that should be released in a few weeks*.
*http://www.engadget.com/2012/03/15/confirmed-ics-coming-to-the-nexus-s-in-the-next-few-weeks/

I've found that if you just stick it in airplane mode when you are about to go into known no service area and then take it out of ap mode when you know you have a signal you can save from having to reboot to reconnect.
My building at work is a tomb for sprints signal and it works for me every day w/o rebooting ...

To all of you having network reconnect issues -- do you use any battery saving apps, like JuideDefender or GreenPower? I use one, and I'm thinking that its network toggling internal API method has something to do with this issue.
Yesterday, I disabled my GreenPower app right before I took the subway, in which my NS couldn't receive any network signal for about an hour. Then, when I went back up to ground level my NS was able to reconnect to my network successfully.
I'll do the same test later after work and update back tonight.

No Signal on G2x

I've had the G2x since it first came out and have always had issues with the signal dropping abruptly. However, since Thrusday, I have lost all signal to the tower and am unable to get it back. I was running EagleBlood's ICS ROM but have since done a full factory reset back to stock and completed an update via the LG Update Tool (I wasn't successful with updating the baseband any other way). Everything appears to be back to factory settings, but I'm not receiving any cell signal still.
Any ideas?
My baseband currently reads: M6600A-SCAUTNZ-2.0.9720T 1 [MAR 2012 10:00:00] MP:TRULGE_08.09.02R_MDM
When I choose Status under the About Phone menu I get the following details:
Network: Unknown
Signal Strength: -93dBm 10 asu (fluxuating slightly)
Mobile Network: GPRS
Service State: Out of service
I am also unable to enable Wifi calling. Basically the only calls/texts I can make are via Google voice on a wireless network.
I'm on the stock 2.3.4 rom currently.

Try a factory data reset and a battery pull
Sent from my LG-P999 using xda premium

Have you checked apn settings?
Sent from my LG-P999

Try a factory data reset and a battery pull.
Click to expand...
Click to collapse
I have done both of these already.
Have you checked apn settings?
Click to expand...
Click to collapse
I'm not sure what I should be checking. Is there a good article/thread on this?

I too upgraded to the new bb, and have been getting random signal drops. IDK if it's Tmo, working on their equipment, or the new base band. I figure I'll give it a week or so, as it hasn't yet interfered with my daily usage (mine drops, then comes back).
My suggestion to you, since your loss seems to be a constant, is to try using kwes 2.3.4. I had some other minor issues w/the LG release, that I don't seem to have with kwes. It's a bit more stable.
http://forum.xda-developers.com/showthread.php?t=1602798
Could just be that you had a bad install. It happens. Give kwes ROM a shot. Maybe that'll take care of it. Good luck!

Thanks for the suggestion. I'll go ahead and give that a shot, but I think in actuality something internally might be messed up.

Have you tried a diffrent sim card?

http://forum.xda-developers.com/showthread.php?t=1661342
Random Signal Drops?
I have the some freaking problem, I made the thread above and I've tried a number of fixes and no dice.. Tonight I'm going to try to get a new sim. I've tried a complete reset, Rooting and removing all bloatware, and flashing a custom rom. No dice. Sometimes I drop from 4g to 2g, sometimes I drop all signal. Wifi never drops but I lose all connectivity to mobile data and signal.
Sent from my LG-P999 using XDA

No signal except wifi
Did any of you ever fix this issue? The same exact thing just started happening to me. I had to start using a back up phone to make calls. The only thing that works in wifi and I've verified the APN settings. I even took the sim card and put it another phone, which worked fine. Let me know if you find anything.

r3sidual said:
Did any of you ever fix this issue? The same exact thing just started happening to me. I had to start using a back up phone to make calls. The only thing that works in wifi and I've verified the APN settings. I even took the sim card and put it another phone, which worked fine. Let me know if you find anything.
Click to expand...
Click to collapse
If you want to eliminate the phone as being the issue, has anyone suggested you roll-back to the previous Baseband and try using one of the CM7 ROM's that are out there?
Logic being, if the rollback gives you the same issues you previously had, then it's not a function of the baseband causing the issue.

So I have the G2x with simple mobile and just installed the latest eaglesblood and obviously I cant make any calls and texting works with wifi so is this fixed or should i go back to 2.3.4

KabeDerlin said:
I've had the G2x since it first came out and have always had issues with the signal dropping abruptly. However, since Thrusday, I have lost all signal to the tower and am unable to get it back. I was running EagleBlood's ICS ROM but have since done a full factory reset back to stock and completed an update via the LG Update Tool (I wasn't successful with updating the baseband any other way). Everything appears to be back to factory settings, but I'm not receiving any cell signal still.
Any ideas?
My baseband currently reads: M6600A-SCAUTNZ-2.0.9720T 1 [MAR 2012 10:00:00] MP:TRULGE_08.09.02R_MDM
When I choose Status under the About Phone menu I get the following details:
Network: Unknown
Signal Strength: -93dBm 10 asu (fluxuating slightly)
Mobile Network: GPRS
Service State: Out of service
I am also unable to enable Wifi calling. Basically the only calls/texts I can make are via Google voice on a wireless network.
I'm on the stock 2.3.4 rom currently.
Click to expand...
Click to collapse
If your having the same problem I use to download the app “GetRIL" from the play store and check to see if your base and and RIL match if not download the right RIL within the app hope this helps! Just saying when I changed my RIL I did lose signals once in a while for a couple days I think but now I can't even remember the last time I have
Sent from my LG-P999 using xda app-developers app

I moved from Baltimore to Denver a couple months ago. When I got here my signal was horrible. Data would hardly work, GPS constantly giving out, extremely frustrating. I went to a Tmo store and they gave me a new SIM. Works way better now.

How do I open a SIM network lock? LG-P999

Mobile Network problem (Solved)

Most of the time it works fine, but if the signal drops I get no internet.
Even if I have one bar signal, the phone tries to connect to 3G or H, which is impossible, so internet doesn't work. I think that when the signal drops the phone should switch to 2G, right?
In settings I have GSM/WCMDA auto checked.
I tried different radios and RILs, but I haven't found a solution. Thx in advance

I was having this issue last night, someone mentioned T-Mobile is having some tower issues. Which rom is it? Is it happening with just one rom or is it any rom? It happened to me running Cm10 then when I switched back to DKOS I got my signal back. I was trying everything also, new rils, ect. The only thing that helped me was to switch roms. Hope you get your data back soon! Maybe try out some different roms to see if it returns.
Sent from my DKOS using xda premium

realsis said:
I was having this issue last night, someone mentioned T-Mobile is having some tower issues. Which rom is it? Is it happening with just one rom or is it any rom? It happened to me running Cm10 then when I switched back to DKOS I got my signal back. I was trying everything also, new rils, ect. The only thing that helped me was to switch roms. Hope you get your data back soon! Maybe try out some different roms to see if it returns.
Sent from my DKOS using xda premium
Click to expand...
Click to collapse
I am using Viper S and I am in Albania, Europe, so it's not related to T-Mob.
The strange thing is that it doesn't switch to 2G, no matter how low the signal is, it always tries to connect to H. Does anyone have this problems with Viper?
Edit. By testing with different RILs, Radios I came up with the best configuration for me.
It's the first time I get 7MB down and 2 MB up. The max before was 5.5MB up.
But the problem with 2G network is the same, so I think it has smth to do with the ROM
Edit:I realized that it was my networks problem. So if you are on Vodafone Albania it's normal to lose connection once in a while.
But there's a simple solution to this problem. I found an app which resolves the probem perfectly 3G RECONNECT

[Q] Network Extender puts me in roaming

Has anyone had a problem with a Verizon network extender putting the phone in roaming? I flashed a MIUI rom and it works awesome until i get home. My network extender puts my phone in roaming on Sprint network. I've unplugged the network extender and phone immediately goes back to Verizon. Any help would be appreciated.

This happens to me also. Instead of Verizon it will say out of neighborhood. This also happens on CM10 but i get a "R". Solution for me was to flash an older radio. It seemed to do this when i flashed the leaked newer radios.

JagXK8 said:
This happens to me also. Instead of Verizon it will say out of neighborhood. This also happens on CM10 but i get a "R". Solution for me was to flash an older radio. It seemed to do this when i flashed the leaked newer radios.
Click to expand...
Click to collapse
I thought about that. Mine says out of neighborhood in the status bar but in about phone under status it says I'm on Sprint network. I've been on the VBLK modem and RPM. I'll flash back and try that. Thanks.

JagXK8 said:
This happens to me also. Instead of Verizon it will say out of neighborhood. This also happens on CM10 but i get a "R". Solution for me was to flash an older radio. It seemed to do this when i flashed the leaked newer radios.
Click to expand...
Click to collapse
What radio did you flash back to. This "R", and lack of signal even when sitting top of my extender, and the general lack of support for Verizon Extenders leaves me frustrated, so I would love to get things back on track. What are you seeing when on the older radio?

Or....no???
Sent using Tapatalk

Stealth111 said:
Or....no???
Sent using Tapatalk
Click to expand...
Click to collapse
What is this supposed to mean? Also, I read a few posts on Rootzwiki somewhere in this thread:
http://rootzwiki.com/topic/34053-mo...shable/page__st__370__p__1043499#entry1043499
and
http://rootzwiki.com/topic/34053-mo...recovery-flashable/page__st__390#entry1049281
...and it seems that flashing the ICS modems removes the "r" when you're on the home extender. So, VRALF2-->VRALHE may not have the "r" logo. Idk what the difference is but only on the JB modems have I seen any of these posts being reported.
Edit: And after looking at my link, its a change that Verizon implemented on the JB builds.

Nexus 5 NO Signal Strength

I have a Nexus 5 with Android version 4.4.2 baseband M8974A-1.0.25.0.23. However for some reason there is no Signal Strength on the phone. I flashed back to 4.4 and still NO Signal Strength.
Anyone have idea of why?

searcharound said:
I have a Nexus 5 with Android version 4.4.2 baseband M8974A-1.0.25.0.23. However for some reason there is no Signal Strength on the phone. I flashed back to 4.4 and still NO Signal Strength.
Anyone have idea of why?
Click to expand...
Click to collapse
What carrier do you have? Have you tried putting the sim card in another phone?

I have a ATT sim but it can not make any call because Signal Strength is 0dBm

This happened to me once after flashing a zip file. A full wipe fixed it.

just did a full wipe in recovery mode and still 0dBm and 90ASU.

searcharound said:
just did a full wipe in recovery mode and still 0dBm and 90ASU.
Click to expand...
Click to collapse
Well your radio is off. Try entering *#*#4636#*#* in the phone app. The Phone Information, then scroll down to where it says LTE/GSM auto (PRL) and the button below should say "Turn off radio". If your's says "Turn on radio", thats the problem.
BTW, use the quote button next time so I get notified when you reply to me.

aooga said:
Well your radio is off. Try entering *#*#4636#*#* in the phone app. The Phone Information, then scroll down to where it says LTE/GSM auto (PRL) and the button below should say "Turn off radio". If your's says "Turn on radio", thats the problem.
BTW, use the quote button next time so I get notified when you reply to me.
Click to expand...
Click to collapse
I can NOT turn on/off my radio. I tried to change to "LTE only" or any other options but it did not change.
Think the phone maybe defected.

searcharound said:
I can NOT turn on/off my radio. I tried to change to "LTE only" or any other options but it did not change.
Think the phone maybe defected.
Click to expand...
Click to collapse
Yup... that seems to be the case now.

Is your IMEI no. and IMEI SV listed in the settings - About - Status ??

searcharound said:
I can NOT turn on/off my radio. I tried to change to "LTE only" or any other options but it did not change.
Think the phone maybe defected.
Click to expand...
Click to collapse
This happened to me too. I am currently waiting for my replacement to show up in the mail.
Sent from my Galaxy Nexus using XDA Premium 4 mobile app

farsight73 said:
Is your IMEI no. and IMEI SV listed in the settings - About - Status ??
Click to expand...
Click to collapse
Yes IMEI is there. Just seem like I can't turn radio on/off, which prevent me from changing LTE-GSM-CDMA etc...

searcharound said:
Yes IMEI is there. Just seem like I can't turn radio on/off, which prevent me from changing LTE-GSM-CDMA etc...
Click to expand...
Click to collapse
Doing Airplane mode doesn't help?

Try flashing the factory image. I had a similar problem. I re flashed the factory cache.img and it fixed it for me, but I would re flash everything.

I also have the same problem. I feel that there is something wrong with N5 antenna. It shows 0 dBm at my home. My other phone with the same sim pickups 1-2 bars of signal.

Strange...my N5 is doing the same thing now. No signal at all. Hopefully this isn't some widespread issue.

Synyster06Gates said:
Try flashing the factory image. I had a similar problem. I re flashed the factory cache.img and it fixed it for me, but I would re flash everything.
Click to expand...
Click to collapse
Flashed both 4.4 and 4.4.2 too but nothing help.
I got 3 and both Nexus is working great just my have no radio signal. I hope I dont get a defected phone. Hope LG/Google see into this problem soon.

searcharound said:
I have a Nexus 5 with Android version 4.4.2 baseband M8974A-1.0.25.0.23. However for some reason there is no Signal Strength on the phone. I flashed back to 4.4 and still NO Signal Strength.
Anyone have idea of why?
Click to expand...
Click to collapse
Hey man I had the exact same problem it just progressively kept getting worse and finally I couldnt get the signal to come back no matter what I did. I took the back panel off and cleaned everything and now my signal is solid as a rock. I reccomend you try it. Check Ifixit to see how to remove the back panel its pretty easy.

Nexus 5 no signal fix
NEXUS 5 NO SIGNAL FIX, I finally fixed my Nexus 5! I downgraded to 4.4.0. At first I had 4g LTE signal and then noticed that I would lose all signal the moment it jumped to GSM and the signal would not come back anymore. So I had to reflash 4.4 again and set the radio to LTE only! To set the radio to LTE only type *#*#4636#*#*. I also flashed different radio bands, now on KRT01B 0.15. (also cancelled all aplication updates in google store, don`t know if has anything to do with it)

same issue!
Umpasan said:
Hey man I had the exact same problem it just progressively kept getting worse and finally I couldnt get the signal to come back no matter what I did. I took the back panel off and cleaned everything and now my signal is solid as a rock. I reccomend you try it. Check Ifixit to see how to remove the back panel its pretty easy.
Click to expand...
Click to collapse
Hi! Got the same issue, tried every possible solution, but none of them could make the radio work. Could you explain in more detail how you cleaned it up?

Also having a similar issue to this - interested in the method you used to clean it? I fear that its some hardware issue that was somehow triggered by my phone running out of battery completely. Weird thing is everything else appears to work fine.