Nexus 4 4.3 JWR66V disconnects from carrier after calls - Nexus 4 Q&A, Help & Troubleshooting

Hey community! lol
I've been having this problem with my N4 on 4.3 jwr66v ever since I upgraded..
I have a prepaid sim. Whenever I have a prepaid data plan phone worms flawlessly but when the plan expires my radio starts disconnecting from carrier randomly
I observed that it mostly happens after i've made a call or received one. The bars go grey then they turn into a grey outline. For it to connect again I have to either toggle airoplane mode or toggle enable data..
I'm on factory 4.3 rooted with supersu. Already tried reflashing radios and doing dalvik and cache wipes
Please help me trouble shoot
Sent from my Nexus 4 using xda app-developers app

That's normal, when you make or receive a call you lose your data connection. Sometimes, depending on your carrier service, it takes time to restore your data connection after a call.

I know that's normal but the problem is once I hang up data doesn't come back them it disconnects from the carrier entirely displaying no signal bars and an outline of the triangle..
I just received a call and this is what I see it will stay in that state till I toggle flight mode
EDIT: Also, if i keep making calls in succession keeping the radio active, it doesn't disconnect until i leave the phone idle again. then the signal drops to 0 bars and shortly after i get the triangle outline.. i contacted google but they reply to me every 3 days :S.. it takes a while.
anyone have any other suggestions?
Sent from my Nexus 4 using xda app-developers app

Is it possible to use the baseband from 4.2.2 JDQ39 with 4.3 JSS15J or JWR66V?
i reverted to 4.2.2 and everything is working fine now. I noticed that the radio in 4.3 was not finding the neighbouring Cell IDs. I'm guessing that the radio was forgetting what cell tower it was connected to before the call and wasn't able to reconnect. i'd have to manually refresh the connection.
if i can use the radio from JDQ39 that would be awesome.. but i want to know before once agaiiinn factory reseting my phone and installing 4.3 and restoring aall my data for like the 8th time lol..
Regards.

Related

[Q] defy+ data network woes

i have a variation on the data network problems, not as annoying as reboots,
but getting close.
normally i am on GSM only, as my data needs are low and it extends
battery life. for hours, everything is dandy. then i notice that
the "G" icon and the signal bar are not blue anymore (stock theme)
but grey. 'settings' say i am still data "connected", but in fact
data connection is out (the operating system thinks there is
data connection, browsers and mail clients keep spinning and
trying until timeout).
turning on and off wifi makes the phone try to connect to the data
network again. sometimes this works, but more often that not, i have
to switch to 3G mode for this to work, and sometimes even that does
not help, and i have to go airplane mode to turn the radio on and off
completely. otherwise it just tries and tries and tries to reconnect,
draining the battery like crazy, and sometimes resulting in these
mysterious reboots others are experiencing as well.
is this the phone or a network problem? (tmobile in the netherlands)
i was on the same network, same SIM with an older LG android phone
and i dont recall having this problem, so i am a bit hesitant
to blame the network for every outage...
should i just send it back for repairs/replacement?
system version: 45.0.74.MB526.Retail.en.DE
baseband: EPU93_U_00.60.00
for a while i will keep the phone in 3G mode to see if the same
problem exists. as my mobile data needs are low, it would be
a shame if i cannot keep it in GSM mode because of this...
I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Sent from my MB525 using XDA Premium App
mikeman8484 said:
I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Click to expand...
Click to collapse
i am on custom saving mode. i think that the saving modes, where
the data connection is cut off after some inactivity, just flesh out
the problem more, as trying to connect back to the data network
happens more often then during normal use, when data connection
is kept alive all the time.
since i set the connection mode to 3G or better, i did not have the problem
but that was only a couple of hours ago. sometimes a day goes by
without manifesting itself...
I'm on 2G all the time. And the custom saving still got set up for cutting the data off but i don't seem to have that problem anymore i can check later on if it would still appear on max saving.
Sent from my MB525 using XDA Premium App
so after days, it seems like i cannot reproduce these problems
while on 3G. seems like 2G only for data is not 100% reliable
either because of the phone or the network itself, or both.
pitty.
i m having problems with network reception with the 7.2 CM rom on the defy+.tried the baseband switcher in this link but still little or no reception
http://forum.xda-developers.com/showthread.php?t=1203297
i have been on 3G last couple of days, and no data woes.
however i had a spontaneous reboot, so the reboot problem
is seemingly not only a 2G issue (if it is)..

Restricted access changed message after 4.2.2

Hello guys and gals
I'm trying to fix my issue and while doing some search I haven't found a fix or what's causing this issue.
Phone is rooted running stock rom and kernel
Manually updated to 4.2.2
After 24 hours on 4.2.2 I came home and turned on wifi like usual, placed the phone on the orb charger and noticed 2 notice on the screen.
Both of them said "Restricted access changed" one for calls and the other for data.
I cleared them and tried to make a phone all and a notice appeared on the dialer screen and the call didn't get thru. I asked my wife to call my phone and it send the call to vm.
Called Tmobile to see if it was something on their end and they said no and asked me to power cycle the phone , yeah like that;s going to help.
I have wipe back to factory, data, cache, dalvik and no luck.
It only happens when the wifi is on, it only started after 24 hours of manually flashing 4.2.2
Any help is appreciated in find the fix for this issue.
happened to me in 4.2.1.
but not that frequently in 4.2.2
I wonder the reason too
Sent from my Nexus 4 using xda premium
It seems that when you turn on "2G only" setting that seems to work but I'm not happy with this temp fix.

[Q] N4 loses ability to receive calls or SMS, data continues to work fine

Hey guys,
Just want to see if anyone else has noticed an issue that has happened to me a couple times. My n4 "loses" its network connection for both received calls and sms.
Status bars indicate a good signal (no hollow triangle) and data works fine during these events. I first noticed when my neighbor came by telling me he sent me a couple messages which I never received although I had been playing with the phone all day.
After rebooting I received many sms and voicemail message indications.
The scary part is there is no way to know when it's happening. There is no indication of lost signal and data service continues to works fine - all calls just go straight to VM and no SMS or VM notifications are delivered.
Any ideas? should I return/exchange it? Thanks for any help.
here's me:
network is Tmo (happened in 2 different cities)
network status bars indicate good signal
data service continues to work ok (3g/4g)
stock, not rooted, phone is only 3 weeks old
still on 4.2.1
I've had this happen to me once don't know why though.
Sent from my Nexus 4 using xda premium
jltyler said:
I've had this happen to me once don't know why though.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
At first I suspected the light flow app because this happened right after installing the app. I thought maybe the app was messing with the notifications so I uninstalled it - but then problem happened again. Also, many people are using the app with no issues so i suspect my phones radio is at fault.
I think I'll RMA it. Thanks!
Crap, i just left Sprint after 11 years of service with them for the exact same reason. Started mid December and by mid Jan and several Network Trouble tickets they had no clue how to fix it and blamed it on network congestion. End of Jan i officially ported to TMO.. Hope this doesnt happen to me again..
I started a thread with similar problems, but I also loose data connection. I get a message on the notification bar about it.
In my case it only happens if I turn wifi on and leave HSPA running, so I have to switch to 2g only for the problem to disappear.
Called Tmobile and they have no clue what is causing the problem.
Sent from my Nexus 4 using Tapatalk 2
IAmSixNine said:
Crap, i just left Sprint after 11 years of service with them for the exact same reason. Started mid December and by mid Jan and several Network Trouble tickets they had no clue how to fix it and blamed it on network congestion. End of Jan i officially ported to TMO.. Hope this doesnt happen to me again..
Click to expand...
Click to collapse
I wouldn't worry too much about it. I've used tmo for years and never had this problem before - only with the nexus 4 the last couple weeks. If this type of issue was more wide spread I think there would be more people complaining about missed calls/txt.
It sure makes me paranoid though. I am now calling my phone a couple times per day (from my work phone) and sending myself SMS messages just to be sure my phone is working.
I just updated to 4.2.2 so maybe that will help. If it happens again I'll exchange it.
SloMotion said:
I get a message on the notification bar about it.
Click to expand...
Click to collapse
What type of notification do you get? In my case there is no notificaion, the only way to tell if its happening is to place a test call or sms from another phone.
I do notice it occurs after heavy HSPA use but I havent been able to duplicate the problem. It's almost as if after heavy use of an HSPA channel the MSC location update is purged - so all calls go straight to voice mail and sms messages are queded in the SMSC (just a guess). Then after flight mode toggle or reboot location update occurs and all is good.
It happened again yesterday so I've gone ahead an ordered a replacement.
I get a triangle notice in the notification bar. And I narrow my problem with my location.
Did you ordered a new phone?
Sent from my Nexus 4 using Tapatalk 2
Which baseband are you on?
I was on the latest 4.2.2 update with the old .33 baseband and I couldn't make or receive calls. To be more specific, my phone was mute as the call was going through. I could not hear the ringing tone. So I flashed the new .48 baseband and it worked.
Well, what I experience sometimes is:
When I leave a WiFi connection, the phone (sometimes) wouldn't reconnect to mobile data (I can only receive calls atm). In order to reconnect it, I have to toggle airplane mode.
Kinda the opposite, but maybe the same solution can be proposed?
My temp solution is to switch to 2g only and turn on wifi. That seems to do the trick
As for baseband I'm rooted with stock rom 4.2.2 and CMW recovery
Sent from my Nexus 4 using Tapatalk 2
---------- Post added at 12:38 AM ---------- Previous post was at 12:24 AM ----------
Ok I got off the phone with customers support and they're aware of the problems.
They're replacing the phone. So I guess I got to return the phone to stock
Sent from my Nexus 4 using Tapatalk 2
I have the exact same issue....
This is really annoying cause you don't know when people sends you message
It first happened to me with 4.2.2 and. 48 radio
Sent from my Nexus 4 using Tapatalk 2

[Q] Loosing Data Service

This is my 3rd Sprint S4 over the past few months. All of the devices are loosing the 3g icon but will show bars. Voice and text works fine, data and 4g does not, i have noticed it usually happens when i leave a WiFi area and it has trouble switching back over to cell data. I can reboot the phone and about 80% of the times it will return to normal. I have used odin to reload to factory. I had my phone rooted only and recently install the Triforce rom to see if it was a software or Kernel issue. Same thing is happening on that rom as well. It doesnt matter where i am so i dont beleive its a tower issue. Any idea?
This happens to me as well. Just Sprint being crappy. Try turning airplane mode on and off, same effect as a reboot but faster.
I tried the airplane mode toggle but didnt seem to fix it. If i use even the "Hot reboot" option in triforce rom that doesnt fix it either.
Assuming this this is the same issue I always experience, there is no fix. It's a network thing. Is there 4G in your area?
What happens to me is my phone will be on 3G, then start receiving 4G, but it doesn't recognize that the data service is now different, so nothing works for 15+ minutes or until I toggle airplane mode on/off.
I take it you've tried just turning WiFi off?
Haha, yea, welcome to Sprint. Enjoy losing data when it's least convenient (such as when you need to use navigation or missed your exit and need to be rerouted). Oh well, the price we pay for unlimited data, right?
I have noticed the same thing since I activated my LTE radio. LTE is expanding in my area so I constantly go in and out of 3G and LTE service. Sometimes when this happens data just ****ing stops working until I enter airplane mode and then come back out of it (a reset works as well). For some reason (or it is just a coincidence) The problem has amplified since installing 4.3. Has anyone else noticed an increase in this problem since upgrading? This is absolutely a Sprint problem? Do we know that people have this same issue with other Sprint phones?
I have the same problem. From wifi to f data takes a little bit of time for it to switch over especially since the data toggle is gone with the 4.3 update. Unlimited plan is water downed from my experience compared to tmoblie. But tmoblie service was horrible.
Sent from my SPH-L720 using xda app-developers app
emerald2382 said:
I have the same problem. From wifi to f data takes a little bit of time for it to switch over especially since the data toggle is gone with the 4.3 update. Unlimited plan is water downed from my experience compared to tmoblie. But tmoblie service was horrible.
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Well Sprint's speed has always been an issue for most of us. That is no surprise. I at least expect to to work AT ALL which apparently it is incapable of doing recently.
JamieP87 said:
This is my 3rd Sprint S4 over the past few months. All of the devices are loosing the 3g icon but will show bars. Voice and text works fine, data and 4g does not, i have noticed it usually happens when i leave a WiFi area and it has trouble switching back over to cell data. I can reboot the phone and about 80% of the times it will return to normal. I have used odin to reload to factory. I had my phone rooted only and recently install the Triforce rom to see if it was a software or Kernel issue. Same thing is happening on that rom as well. It doesnt matter where i am so i dont beleive its a tower issue. Any idea?
Click to expand...
Click to collapse
If wifi is on 3g/4g is not there,, turn off wifi and you should see icon,, if you see bars it's most likely working :sly:
Edit just re read your post, I have the same issues sometimes and as posted above toggling on and off typical works for me,, good luck
Also is your network set to
CDMA/LTE/EVDO? Just throwing out ideas
Sent from my SPH-L720 using Tapatalk
I get this issue all the time & I have to do a battery pull to get my phone working again. Anyone flash a new modem which fixes this? The SGS4 is 10x worse than my HTC EVO 3D was with this issue.
pcfascist said:
I get this issue all the time & I have to do a battery pull to get my phone working again. Anyone flash a new modem which fixes this? The SGS4 is 10x worse than my HTC EVO 3D was with this issue.
Click to expand...
Click to collapse
Seems like a hardware problem based on your description. I am fully convinced that this whole flashing modems things is just a feel-good measure for people who have exhausted all other options. It was big in the Galaxy S2 days, but I have never seen any measurable difference between modems in any meaningful metric on that device. At least not one that could not be attributed to other factors such as signal quality and network load, and nothing consistent. A different modem isn't going to fix a hardware fault or magically improve Sprint's awful service.

[Q] galaxy s4 signal drops

As the title says the signal drops on my s4(gt-i9505) alot.I've been searching over the internet to find a fix but nothing helps.
The sim card is brand new so it.s not the sim
The firmware is updated to latest version
The imei is the same as it writes on the back of the phone so it should be right
Even if the signal is poor or strong it drops randomly and the only way to fix it is to restart the phone.
I also tried to factory reset the phone many times
Even if i set the network mode only on 2g or 3g it does the same thing
I'm from romania and the service network is on Vodafone
Android version is 4.4.2
I dont have waranty for the phone so i'm tring every option i can before sending it to a service center.
I try to belive there is a glitch in the soft and not hardwere fault
If there is anything else i can do please tell me!
This happens to me sometime, the only thing that I do is I switch to airplane mode then switch back again then wait a couple seconds then it restores to the right or proper network coverage. What happens is you experience is that the signal suddenly drops right?
rojo_salas said:
This happens to me sometime, the only thing that I do is I switch to airplane mode then switch back again then wait a couple seconds then it restores to the right or proper network coverage. What happens is you experience is that the signal suddenly drops right?
Click to expand...
Click to collapse
Yes the signal suddenly drops and even if i try to swtch to airplane mode and then back again it's not doing anything.
And in the past few days it became more frequently.It's not passing half an hour before the signal drops.
Did you try flashing different modems? That would be my point to start.
Yes i did flash a new modem but it still keeps droping.
I will try other modems since there are more avaible for my country.
Sent from my GT-I9505 using XDA Free mobile app
As you can see in the picture none of the options is checked.
They uncheck themself and if i try to select one of them nothing happens.
The only way to get the signal back is to restart the phone
Sent from my GT-I9505 using XDA Free mobile app

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