Random Signal Loss - Nexus 4 Q&A, Help & Troubleshooting

Hi,
Not sure why, I'm facing random signal loss. Particularly when the phone sleeps.
I'm using Sentinel ROM and Air Kernel.
This has been happening in the past week and my other dumb phone on the same network with another sim card always has signal.
Neither the ROM or Kernel was updated recently.
What could be the problem?
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nileshgr said:
Hi,
Not sure why, I'm facing random signal loss. Particularly when the phone sleeps.
I'm using Sentinel ROM and Air Kernel.
This has been happening in the past week and my other dumb phone on the same network with another sim card always has signal.
Neither the ROM or Kernel was updated recently.
What could be the problem?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Any chance your Nexus is looking for 3g signal where as your dumb phone is on 2g?
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atulalvenkar said:
Any chance your Nexus is looking for 3g signal where as your dumb phone is on 2g?
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It is in 3g (preferred)/2g mode.
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Turns out to be a issue with operator. Was in a different area all day and didn't face it.
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Related

Data service issues

I'm not getting any WhatsApp messages unless I turn my screen on for a few seconds then they all come in. Any ideas what this is?
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Are you on WiFi? If you are, there's a wifi delay bug.
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Ya I know about that. That isn't the issue. Also, when I am on WiFi and leave home my cellular network doesn't connect sometimes once I disconnect form wifi
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bendirkss said:
Ya I know about that. That isn't the issue. Also, when I am on WiFi and leave home my cellular network doesn't connect sometimes once I disconnect form wifi
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Click to collapse
Yes this is the issue on latest 4.2.2. Currently reported to Google. : Data Service Issue
Rohit02 said:
Yes this the issue on latest 4.2.2. Currently reported to Google. : Data Service Issue
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Click to collapse
An update would be super
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Seems like everyone is facing this issue. An update from Google will fix it.
same issue for me on JB 4.2.2
very frustrating. google must fix this
Have the time I actually have no service.. I'm constantly putting my phone in and out of airplane mode
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Anyone hear anyrhing on a fix yet? I can rarely use my phone definitely wish i kept my BlackBerry
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No signal on T-Mobile

Im using T-Mobile and yesterday I got that empty service bars on the notification and it could only make emergency calls. Happens from time to time didn't think anything of it but I left the house and I'm still not getting any service. I was running paranoid android June 6 build so I tried switching ROMs and kernels but still no signal . of course I took out sim and rebooted the phone. I even put my sim on another phone and it work got signal and put there sim in my phone and wouldn't get any signal either. I ran out of options any help is greatly appreciated
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castro08 said:
Im using T-Mobile and yesterday I got that empty service bars on the notification and it could only make emergency calls. Happens from time to time didn't think anything of it but I left the house and I'm still not getting any service. I was running paranoid android June 6 build so I tried switching ROMs and kernels but still no signal . of course I took out sim and rebooted the phone. I even put my sim on another phone and it work got signal and put there sim in my phone and wouldn't get any signal either. I ran out of options any help is greatly appreciated
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Click to collapse
This happened on my first nexus 4. Nothing fixed it. Nothing. Hopefully your situation is different. If nothing works, flash back to stock and start the RMA process. Google said it was a hardware failure with mine by the way.
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castro08 said:
Im using T-Mobile and yesterday I got that empty service bars on the notification and it could only make emergency calls. Happens from time to time didn't think anything of it but I left the house and I'm still not getting any service. I was running paranoid android June 6 build so I tried switching ROMs and kernels but still no signal . of course I took out sim and rebooted the phone. I even put my sim on another phone and it work got signal and put there sim in my phone and wouldn't get any signal either. I ran out of options any help is greatly appreciated
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Click to expand...
Click to collapse
do you have your phone info set to lte only?
How do you check that? *#*#4636#*#* ? If so that's on wcda prefer
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Exodian said:
This happened on my first nexus 4. Nothing fixed it. Nothing. Hopefully your situation is different. If nothing works, flash back to stock and start the RMA process. Google said it was a hardware failure with mine by the way.
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Did your happen when you first got it or after you had it for awhile? And what's the RMA process
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The periodic loss of signal was there since day. I still have it on my new one. Others do as well, but one day it went out and never came back on. I believe it was a different issue than just random signal loss. Google said hardware failed in it. You have to contact Google to start an RMA. I'm also not implying that your signal won't come back on at some time either. Personally I would flash everything back to stock. Go to a t mobile store and get a new Sim card and if no signal still then contact Google
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Under settings, then data, then mobile networks, then to network operators.
let it search, even if it doesn't find anything or errors.
Then click choose automatically.
If you frequently travel out of 3g/H areas, you need that checked or the phone won't roam from tower to tower. you will get no signal.
Also, if that don't work, you can try clicking on a network it finds, and let it register, your signal may come back.
This is a common problem with those that don't live in big cities or near full strength 3g/h areas.
The phone doesn't handle tower handoffs well. Crappy LG modems.
Exodian said:
The periodic loss of signal was there since day. I still have it on my new one. Others do as well, but one day it went out and never came back on. I believe it was a different issue than just random signal loss. Google said hardware failed in it. You have to contact Google to start an RMA. I'm also not implying that your signal won't come back on at some time either. Personally I would flash everything back to stock. Go to a t mobile store and get a new Sim card and if no signal still then contact Google
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Click to collapse
Thank for your help that what I'll have to do only problem is I traded an s3 for this phone on CL so if it hardware I think I'm SOL but thanks for your help
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kthejoker20 said:
Under settings, then data, then mobile networks, then to network operators.
let it search, even if it doesn't find anything or errors.
Then click choose automatically.
If you frequently travel out of 3g/H areas, you need that checked or the phone won't roam from tower to tower. you will get no signal.
Also, if that don't work, you can try clicking on a network it finds, and let it register, your signal may come back.
This is a common problem with those that don't live in big cities or near full strength 3g/h areas.
The phone doesn't handle tower handoffs well. Crappy LG modems.
Click to expand...
Click to collapse
I tried this and when I click T-Mobile or att it says this sim card can not pick up a connection but the sim card works on other T-Mobile phones
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castro08 said:
I tried this and when I click T-Mobile or att it says this sim card can not pick up a connection but the sim card works on other T-Mobile phones
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Click to collapse
Try getting a new Sim from t mobile and reflashing the radio
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Exodian said:
Try getting a new Sim from t mobile and reflashing the radio
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Thanks will do but why would my sim card work on other phones and other sims not work on mine
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castro08 said:
Thanks will do but why would my sim card work on other phones and other sims not work on mine
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Click to collapse
Most likely wouldn't but it would be one more "possible" problem eliminated.
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Exodian said:
This happened on my first nexus 4. Nothing fixed it. Nothing. Hopefully your situation is different. If nothing works, flash back to stock and start the RMA process. Google said it was a hardware failure with mine by the way.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
I'm currently going through the RMA process over virtually the exact same issue. However, I've been running franco's nightlies lately and up until he restored the HSIC/wifi stuff to stock in r154 I was actually experiencing less data drops and rapid tower swapping (constantly going from 3g to H and back rendering consistent data inoperable). *shrug* I feel as if it's something in the hardware on the cusp of failing because sometimes it does it more and sometimes it does it less. It's rather weird. I'm also on T-mobile towers through an MVNO (Straight Talk).
I just cancelled and switched to ATT go phone.
I have RMA'd 2 devices, tried multpie new simcards, relflashed, tried new radios, and nothing worked.
It no longer switches from 3g to H on ATT network.
It stays in H constantly.
Also, no more signal drops or loss of signal.
I have 100% signal all the time now.
The data is a little more expensive, but worth it for the coverage so far.
It's not your phone, it's the tmobile network.

T-Mobile LTE down?

I have had the LTE fix on my phone for about two weeks now and today it is not showing up. Is 4G down in the LA area? Is anyone else having this problem?
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JusDre82 said:
I have had the LTE fix on my phone for about two weeks now and today it is not showing up. Is 4G down in the LA area? Is anyone else having this problem?
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I'm over in the IE, and LTE is going strong.
This is really weird. All the APN settings and the radio is still there. Nothing has changed except I'm just not getting 4G anymore
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Have you rebooted lately? I know if I reboot, then the setting in 4636 changes to WCDMA Preferred. I have to go back and change it to LTE/GSM, then turn the radio off and back on before it will connect to LTE.
Not sure if that is normal, but that's what happens to me.
I just did a factory wipe and I rebooted everything works now. Really weird though. It happened right after I put LTE on my girls Nexus 4 and it's not working on hers right now either. I'll wipe hers when I get home I guess.
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Quick question what kind of speeds you guys are getting on lte
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aseercte said:
Quick question what kind of speeds you guys are getting on lte
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depending on what area of new york city im in, topping at about 29mbps download and 12mbps on upload.
was working in the Bay Area when I tried it just now....
Was working in San Diego earlier... Pulled 30 down 15 up
Working in Denver, 33Mbps down 13 up
What program are you using to test your speeds?
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JusDre82 said:
What program are you using to test your speeds?
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https://play.google.com/store/apps/...DEsIm9yZy56d2Fub28uYW5kcm9pZC5zcGVlZHRlc3QiXQ..
Thanks
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I get those speeds on occassion in chicago but that doesn't really even matter. the LTE signal seems to penetrate building better.
thfreedumb said:
I get those speeds on occassion in chicago but that doesn't really even matter. the LTE signal seems to penetrate building better.
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Click to collapse
I noticed that, it still isn't where I need it to be but it's definitely gotten better.
These are my speeds, not the highest but I'm happy with them! I'm in NYC, btw
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3G disconnects when on the phone

It it normal for my mobile internet to disable when I'm talking on the phone? And when I cut off it comes back
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It's always done it for me so I'm assuming it's normal
Are other phones like this?
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ezeekaY said:
Are other phones like this?
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I'll also say my old Galaxy Nexus and HTC One X did the same - I'm almost 100% sure it's normal behavior in Android
If I'm not mistaken it's because your using 3g to call someone. Now if you were on 4G and try to call somebody most likely it would still say 4G on the top notification bar because it's using your non LTE band to call somebody and allows you to use LTE for data purposes so you would be able to hop on the internet and browse at the same time on a call. Now I know with AT&T you can call somebody and browse the internet while on 3G.
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Data stops working intermittently.. Full bars.. Am I the only 1

My Nexus 4 running CM11 (doesnt seem to matter what rom I run, same problem when I was running slim rom) will intermittently lose data, most noticeable when streaming Pandora. Music will play just fine for about 30 minutes straight or more then it just stops playing and i am not able to get any data into the phone for at least 3 minutes unless I reboot. The thing is that i never show signal loss, it's always 4 plus bars of LTE (have not tried to duplicate on hspa).. It's not the app because google search stops working as well... I am using a hybrid radio..
Am I the only one experiencing this issue? Btw I'm in the US and using tmobile..
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Nexus 4 does not support LTE !! I GUESS because mine doesn't ☺ so try Using it on 3g or wifi!!
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Officially Yes that's correct.. However it does have the radio for it and it does work.. I will try hspa and see if it happens... But I'm not convinced its an LTE issue just yet.
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What service do you have?
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Tmobile
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