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[HELP] No 3g signal since official update

First I will state that after 4+ hours spent in front of google I haven't found any similar issue. Today the One S offered me to install the android "jelly bean" update. After the update the phone worked normally, except for the fact I was continually getting disconnected from the network. Now I have no signal at all (no internet and no calls). After swapping the sim card for sim cards of different carriers (phone is not sim-locked), I noticed I was getting only 2G signal, 3G networks don't show up.
Probably that's why I get no signal on my original carrier since it only provides 3G signal. As a last resort I rooted the phone and installed Cyanogenmod 10 thinking it would somehow help. Maybe the problem is with the antenna? Even if the phone was fine before updating?
Phone specs:
-HTC one S (S4)
-Baseband: 1.08ts.50.02.16_10.08e.50.04L
-Kernel version: 3.0.51-geb1844c
-Carrier IL Pelephone (Originally from Vodafone)

tallon4 said:
First I will state that after 4+ hours spent in front of google I haven't found any similar issue. Today the One S offered me to install the android "jelly bean" update. After the update the phone worked normally, except for the fact I was continually getting disconnected from the network. Now I have no signal at all (no internet and no calls). After swapping the sim card for sim cards of different carriers (phone is not sim-locked), I noticed I was getting only 2G signal, 3G networks don't show up.
Probably that's why I get no signal on my original carrier since it only provides 3G signal. As a last resort I rooted the phone and installed Cyanogenmod 10 thinking it would somehow help. Maybe the problem is with the antenna? Even if the phone was fine before updating?
Phone specs:
-HTC one S (S4)
-Baseband: 1.08ts.50.02.16_10.08e.50.04L
-Kernel version: 3.0.51-geb1844c
-Carrier IL Pelephone (Originally from Vodafone)
Click to expand...
Click to collapse
Now that you have CM10 installed (or a CM10 base ROM, I would suggest JellyBam), you should go to http://forum.xda-developers.com/showthread.php?t=1998270 and try flashing different baseband radios. You should be able to flash different radios on CM10 regardless of your hboot version or whether you got a recent OTA update. If you are having signal problems, it doesnt hurt to test out different radios to see if in fact it is a software problem.

No success. Tried all radios with same results. Sometimes the phone will connect to the network for a minute or two and then disconnect. Also does somebody know how to switch the baseband frequencies on the One S? I tried the DEFY but it always threw an error.

Come on! Nothing left to do? I will just trash the phone because htc don't know how to update thier phone without completely screwing it up? I have no use for a 4G phone that only runs on 2G networks.

tallon4 said:
Come on! Nothing left to do? I will just trash the phone because htc don't know how to update thier phone without completely screwing it up? I have no use for a 4G phone that only runs on 2G networks.
Click to expand...
Click to collapse
You say it's HTC fault although nothing happened to me. Sometimes hardware comes with defects and you were unlucky enough to have one. And btw one s hasn't gotten a jelly bean update yet. If it's only 30MBs It's not jb
Sent from my HTC VLE_U using xda app-developers app

Spastic909 said:
You say it's HTC fault although nothing happened to me. Sometimes hardware comes with defects and you were unlucky enough to have one. And btw one s hasn't gotten a jelly bean update yet. If it's only 30MBs It's not jb
Click to expand...
Click to collapse
Probably, but it worked fine before the update. I know it wasn't a jellybean update, just changed a bit the menus. It's just a shame that I have to throw the phone away like this, it was a nice upgrade to the iphone 4.

Signal drops since 4.2.2

Hi everyone.
I owned a Nexus 5 one month ago, but unfortunately, it does not work as expected. On 4.4.0, I had multiple issues concerning network already (unable to switch to 3G networks only, very variable HSPA signal reception (from 4/4 bars to Edge exactly at the same place), ...). This issues were supposed to be fixed with 4.4.2 and most of them are, excepting HSPA signal which is still very weird. However 4.2.2 brings my phone another issue that I didn't noticed on 4.4.0 which is a very annoying and repetitive complete signal blackout (no reception at all (Edge/HSPA), even for emergency calls I guess). Signal drop can happen twice in an hour, twice in 10 minutes or may not happen at all 3-4-5 hours long. It's completely unpredictable. After a while, Edge signal (not HSPA !!) gets back by itself. If I wait 10-20 more minutes, HSPA comes back again, until it drops again.
Moreover, at phone boot, just after typing my PIN Code, it usually takes 2 or 3 minutes to catch a signal. Very slow isn't it ?
It does not seem to be a network issue, since my Samsung Galaxy S III doesn't encounter this using the same SIM card.
I read on Google forums and probably some XDA threads that I was not the only one to face this kind of network issues, even on 4.4.2, but issue description was each time a bit different from mine, thus I tought that it may be useful to post a new thread to describe precisely what was my problem.
Edit : My Nexus 5 is unlocked and rooted, but issue is present on untouched 4.2.2 also.
Edit 2 : http://forum.xda-developers.com/showthread.php?t=2525583 is probably my issue.
Do no hesitate to answer if you're thinking that you have the same issue (or kind of) or if you think that you know something that may help.
Thank you .
KennyG9

You can flash the radio from version 4.4 that helps a lot, I'm at work just search this forum the directions are here, it's easy.
Sent from my Nexus 7 using Tapatalk 4

^^ He appears to be talking about the link below. You can flash different modems that may work. Some people say different modems helped but I've had no such luck. I've flashed every modem available and still don't have data almost everywhere I go. I have data at home but that doesn't really matter since I don't need my phone at home.
http://forum.xda-developers.com/showthread.php?t=2514095

Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks

dicecuber said:
Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks
Click to expand...
Click to collapse
Were would one find the carrier specific radio? I'm on T-Mobile but have only found the thread with modems. Nothing carrier specific.

Thanks for your answers. Unfortunately, flashing different modems does not seem to help .

i've read, the .15 is good with t-mobile.
i'm testing it today too. my problem is not only a signal drop, i have only edge too and my modem won't switch back to umts or hspa(+).
i'm in germany with t-mobile (congstar).

GSM / data signal loss

Hello everyone,
I would like to share big problem what I have and killing me.
Sometimes (1 time in a day or 1 time in 2 days), GSM signal is lost and I have to restart my nexus. What I have done so far,
* I checked my IMEI number and that's OK
* I checked my sim card againts to damages and scratches and that's OK. But these is gap between sim tray and card by ~1mm. The gap is only on long side of tray, short side is fully matched.
* I checked signal power and asked to carrier (TR AVEA) and that's OK.
* I installed hidden menus from Google Play then go to setting -> testing menu -> Phone Info
- preferred mode : GSM auto (PRL)
- If I select "select radia band" from pull-down menu, only one possibilities "USA Band". Even If select this, GSM and data signal loss.
- I tried another carrier sim card (Vodafone TR) and applied same settings above (USA Band), and failed again.
- I understand that "USA Band" is not suitable for us
My device is D821(E) and use 4.4.3 full stock firmware. No root, locked.
Can anyone help me? Thank.

After I updated to 4.4.3 (via purity ROM and Flashing the new Radio/Baseband) I noticed my data connection was constantly droppping in and out
So today I decided to flash the old radio from KRT16M (4.4.2) to see if it made a difference and it seems to have so far. I haven't had any loss of connection in the 2hrs since flashing, whereas on the new radio it was constantly dropping in and out. I will test for longer but i think the new radio in 4.4.3 may not be optimised for some networks (i'm on Optus in Australia)

Lewythefly said:
After I updated to 4.4.3 (via purity ROM and Flashing the new Radio/Baseband) I noticed my data connection was constantly droppping in and out
So today I decided to flash the old radio from KRT16M (4.4.2) to see if it made a difference and it seems to have so far. I haven't had any loss of connection in the 2hrs since flashing, whereas on the new radio it was constantly dropping in and out. I will test for longer but i think the new radio in 4.4.3 may not be optimised for some networks (i'm on Optus in Australia)
Click to expand...
Click to collapse
2 months ago, someone from Turkey who use same carrier (TR AVEA) has noticed signal loss problem with 4.4.2
I remember that he has mentioned neither stock and customs has same problems. I think this is completely baseband problem.

Lewythefly said:
After I updated to 4.4.3 (via purity ROM and Flashing the new Radio/Baseband) I noticed my data connection was constantly droppping in and out
So today I decided to flash the old radio from KRT16M (4.4.2) to see if it made a difference and it seems to have so far. I haven't had any loss of connection in the 2hrs since flashing, whereas on the new radio it was constantly dropping in and out. I will test for longer but i think the new radio in 4.4.3 may not be optimised for some networks (i'm on Optus in Australia)
Click to expand...
Click to collapse
Also had to revert to 4.4.2 radio wasn't receiving incoming calls with the 4.4.3,don't think it really matters which you use though
Sent from my Nexus 5 using Tapatalk

I had same problem. Devs seem to think radios are the same for both phones. If they are why are there different models for usa and Europe? If you put a usa radio in uk phone it will work poorly as it has SOME bands and vice versa i found one marked d21 radio and back to normal. You are treated as a moron for thinking that the radios differ. Look at Wikipedia
# 47386

Staggerlee66 said:
I had same problem. Devs seem to think radios are the same for both phones. If they are why are there different models for usa and Europe? If you put a usa radio in uk phone it will work poorly as it has SOME bands and vice versa i found one marked d21 radio and back to normal. You are treated as a moron for thinking that the radios differ. Look at Wikipedia
# 47386
Click to expand...
Click to collapse
Can you please share the name of baseband that you found?
And I checked the wikipedia and could not find any useful things as you said.

This is a photograph of the baseband I put in and another of the different frequencys the two phones use. Using D20 in uk drastically affects h+ as you will see by the difference
# 47386

Here
# 47386

On lte , which includes h+on most, you can see the d20 radio is usless in the UK i was getting h at best and 3g most. Now im back to h+all the time. The experts say that there is no difference so take your pick.
# 47386

Same baseband that I use with 4.4.3 OTA.
I always use 3G "Preferred Network" option.

Same problem here with the new 4.4.3 radio. Incredibly weak LTE signal (fine if I select 3G in Mobile Networks) and sometimes no signal at all. I may try flashing the older radio this evening.

I realised it was happening more often when my gps was locked.. As soon as i switched off gps my signal restored..
Running rooted 4.4.3 stock rom
Sent from my Nexus 5 using Tapatalk

I'm still having some issues with the older radio, not as many as with the new, so there may be something inherent in the 4.4.3 update as well, this is annoying as my phone was running perfect on 4.4.2, may have to restore my backup

Really nice phone and cool design.
But weird problems without solution

hsahin4 said:
Hello everyone,
I would like to share big problem what I have and killing me.
Sometimes (1 time in a day or 1 time in 2 days), GSM signal is lost and I have to restart my nexus. What I have done so far,
* I checked my IMEI number and that's OK
* I checked my sim card againts to damages and scratches and that's OK. But these is gap between sim tray and card by ~1mm. The gap is only on long side of tray, short side is fully matched.
* I checked signal power and asked to carrier (TR AVEA) and that's OK.
* I installed hidden menus from Google Play then go to setting -> testing menu -> Phone Info
- preferred mode : GSM auto (PRL)
- If I select "select radia band" from pull-down menu, only one possibilities "USA Band". Even If select this, GSM and data signal loss.
- I tried another carrier sim card (Vodafone TR) and applied same settings above (USA Band), and failed again.
- I understand that "USA Band" is not suitable for us
My device is D821(E) and use 4.4.3 full stock firmware. No root, locked.
Can anyone help me? Thank.
Click to expand...
Click to collapse
Guessing from the last line, you had updated to 4.4.3 through OTA? You could try to reflash the radio img but that would require you to has custom recovery.
Staggerlee66 said:
I had same problem. Devs seem to think radios are the same for both phones. If they are why are there different models for usa and Europe? If you put a usa radio in uk phone it will work poorly as it has SOME bands and vice versa i found one marked d21 radio and back to normal. You are treated as a moron for thinking that the radios differ. Look at Wikipedia
# 47386
Click to expand...
Click to collapse
That's because flashing different modem images (D280/D281) does not change your available phone bands. It is a hardware limitation, nothing to do with with firmware.

That was not on my phone. I put it on. As you can see in the pic above there is a world of difference between the two models. Depending on where you are if you get a d20 radio in a d21 your going to get no data like i did
# 47386

As far as I know, it depends on your network capabilities. I have a D281 running the latest D280 radio, everything works as fine. Faster LTE even.

am not sure what is wrong too but am facing this issue quite a lot as well. But it is not restricted to Nexus 5 only. I have another phone Samsung Galaxy Grand 2 and face the same issue.
Am not sure what to do on this, however, after some search I found a site where the author claims it gets fixed after uninstalling updates of the following apps:
Google Launcher
Google Search
Google Maps
Google Hangouts
Google Newstand
One or more amongst the apps might be causing some issues. See if it fixes your problems. I will be trying it too but will uninstall all updates from one of the above applications at a time to see which app is the real culprit. Please share with all of us in case you get to know before me or have another solution for us to try.
PS: Hit 'Thank You;' if this helps.

[Q] No signal strength all of a sudden

Hello,
I bought my Nexus 5 on the 11th of December 2013 and it had been working flawlessly ever since. Since last week, I started noticing the occasional signal drop and I'd be out of cell reception but would usually be back up within no time. However, yesterday, out of the blue I'm travelling on the highway and my signal strength disappears never to come back again. I've tried the following:
- Restore old backup (including EFS)
- Went back to stock from PA
- Upgraded to the latest radio
- Took back cover off to see if anything was wrong but found nothing.
- Tried another SIM card
Nothing worked. My SIM card works fine in another phone. Everything else such as WiFi and Bluetooth works flawlessly but I just don't get any reception.
This is very disappointing and I have my fingers crossed hoping someone can help me with this since I didn't plan on getting a new device for at least another year especially after paying $520 USD for my phone here in my country.
Thank you for looking.

im having a similar problem with the radio after the last few otas. im getting a lot of dropped calls on 3g aws...
im going to try to revert to an old radio as i don't think this is a hardware failing issue..
Sent from my Nexus 7 using Tapatalk

Flash stock firmware with fast boot. If its the same, its a carrier issue....call them to see. Or its hardware failure.

just wanted to post my fix for this issue - very disappointed with Google that i had to do this...my provider is mobilicity canada (3g aws band fyi)
flash krt01b radio from this thread...
http://forum.xda-developers.com/showthread.php?t=2514095
this is *not* a carrier or hardware issue (at least in my case)
seems others are having same issue
https://code.google.com/p/android/i...s Owner Summary Stars&groupby=&sort=&id=70878

Then it is a carrier issue....cause on Telus in Canada....never had an issue with any radio version. ?

telus would have a stronger overall signal but uses AWS band for lte which is different than mobilicitiy 3g aws...

I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?

KJ said:
I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?
Click to expand...
Click to collapse
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...

nolook said:
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...
Click to expand...
Click to collapse
Just saying that unless many have the issue with the phone or radio, then its an issue.....if not, it isnt .
So in this case, it leaves hardware or carrier....assuming a stock flash didn't help.
If flashing another radio helps the OP...awesome!! But the new radio does work fine for the mass majority.
Hope it does work for him tho!

Nexus 5 - Android 5.1 LMY47D Radio Issues

Hello all,
Sparse poster, long time lurker. I just upgraded my Nexus 5 (purchased from Google, on T-mobile) from 5.0.1 to 5.1 using the OTA link available from AndroidCentral and though no other problems have been found, I am having some trouble with the radio now. When I'm on a call now, the data connection drops from LTE to GPRS, showing the 'G' next to the signal strength icon. Before upgrading from 5.0.1, this would drop to HSPA ('H') at worst. I came to expect that the 5.1 update would enable VoLTE since I thought the N5 was capable of this and the upgrade enabled VoLTE on the N6 for a buddy of mine. Either way, I think GPRS is a pretty bad when I need a data connection while on a call.
I tried to reflash the bootloader, radio, boot and system img's manually and nothing changed. Any ideas? Anyone else having this issue?
Thanks!

hi, I encountered same issues with tmobile LTE after I sideload to android 5.1.

cocopete5243 said:
Hello all,
Sparse poster, long time lurker. I just upgraded my Nexus 5 (purchased from Google, on T-mobile) from 5.0.1 to 5.1 using the OTA link available from AndroidCentral and though no other problems have been found, I am having some trouble with the radio now. When I'm on a call now, the data connection drops from LTE to GPRS, showing the 'G' next to the signal strength icon. Before upgrading from 5.0.1, this would drop to HSPA ('H') at worst. I came to expect that the 5.1 update would enable VoLTE since I thought the N5 was capable of this and the upgrade enabled VoLTE on the N6 for a buddy of mine. Either way, I think GPRS is a pretty bad when I need a data connection while on a call.
I tried to reflash the bootloader, radio, boot and system img's manually and nothing changed. Any ideas? Anyone else having this issue?
Thanks!
Click to expand...
Click to collapse
Tried downgrading to previous radio version?

I use kitkat radios on lollipop

I'm not having any problems with LTE. I'm on T-Mobile.
Sent from my Nexus 5 using XDA Free mobile app

My stock 5.1 radio was very broken. Phone process froze, no deepsleep, losing connection and sim, people could not call me. Very bad.
Using 5.01 radio now, its much better.
My provider is Vodafone NL.