Database Develop

Someimes My Nexus One won't send text messages or make phone calls unless I reboot :(

I have an unrooted ATT version of the nexus one. Randomly about 1 or 2 times a day while I am texting I will get a failed to send message and no matter how many times I try it just keeps failing. It won't allow me to send texts to anyone else either. however I continue to receive texts which is kinda odd.... the worst part is that always while this is happening I cannot make or receive phone calls this is very frustrating since I could be missing phone calls and wouldn't know it until I try and send an SMS or make a call. I have tried a lot of different things such as setting my bands to USA and setting my network preference to WCDMA Only but to no avail... I also tried a factory reset... also if I try and toggle airplane mode or turn off the radio it just crashes and I need to reboot.. if i try checking the SMSC while this is occurring but hitting the refresh button
I get refresh error and if I try and update it with the correct number I get update error... I really love my N1 and would really appreciate anyone who could shed some light on this issue

Re: My Nexus One won't send text messages or make phone calls unless I reboot
Could this be an AT&T network issue? I had similar symptoms with my HTC Hero (admittedly running EDGE) in certain parts of San Francisco earlier this year. It seemed to be the result of network congestion. Does this occur in a city or other urban area?
Sent from my Nexus One using the XDA mobile application powered by Tapatalk

I am actually not on AT&T I am on Rogers network in Canada. I am living in Toronto so the 3G coverage is really good and I`ve never had this kind of issue with my previous phone which was a BB9000 and none of my friends seem to have any of these problems
I also found ppl on some other nexus one forums describing the exact same problem which leads me to believe its not a network issue but I am still not 100% sure I tried calling Rogers and had them do a cancel location and it didn`t fix the issue either

I had this issue only this morning and I'm in the UK, I put the phone into Airplane mode and back again and then everything is fine.

I have this issue about once a day.
Running the newest Cyanogen with no other modifications. Radio is the most updated one available.
Flipping to Airplane mode and backed worked on my G1 if I had an issue similar to this but the Nexus doesn't respond to it.
I reboot atleast once a day to fix this. -- Not sure if it's the radio or Cyanogen.
Anyone else have some input?
EDIT: Should have included, I am on T-Mobile

This actually happened with me today, a text kept failed and didn't get pushed through until I reset the phone. I'm hoping this doesn't turn into a daily thing

next time this happens if it happens again could u guys try and make a phone call before resetting so we can see if our problems are identical?
Thanks

This sounds like a problem I have had for several months now on T-Mobile (I just bumped the thread under the "General" topic to see if there were any developments, as I've been away from the board for six weeks or so). The symptoms I have are that the signal strength icon in the status bar shows zero bars with an "x" and the home screen says "No service." When I attempt to power off, after a while the spinning arrow stops spinning, the trackball flashes once, and then the phone reboots (takes about 45 seconds to a minute after I initiate the power-down before the reboot starts).

jasrups said:
This actually happened with me today, a text kept failed and didn't get pushed through until I reset the phone. I'm hoping this doesn't turn into a daily thing
Click to expand...
Click to collapse
Same thing happened to me today. I'm on a stock unrooted AWS version of the N1.

hayden1987 said:
next time this happens if it happens again could u guys try and make a phone call before resetting so we can see if our problems are identical?
Thanks
Click to expand...
Click to collapse
I am unable to make phone calls, send texts, etc. until I reset. It has no impact on Wifi but kills the cell network completely.
wmm said:
This sounds like a problem I have had for several months now on T-Mobile (I just bumped the thread under the "General" topic to see if there were any developments, as I've been away from the board for six weeks or so). The symptoms I have are that the signal strength icon in the status bar shows zero bars with an "x" and the home screen says "No service." When I attempt to power off, after a while the spinning arrow stops spinning, the trackball flashes once, and then the phone reboots (takes about 45 seconds to a minute after I initiate the power-down before the reboot starts).
Click to expand...
Click to collapse
I also have a long delay after hitting restart when I get this issue. Maybe Ill try to get a logcat and see what it gets stuck on..

I'm getting RMA'ed, again, for the same issue plus not being able to register on the network after I get the x with four blank bars. I get either "error searching for networks" or "sim is invalid on this network". It's since fixed itself... somehow but i was without any phone service despite trying everything (calling tmobile for network outages, hard reset, reseating the sim card, other stuff) for about 3-4 hours twice now... and a few shorter time periods (1-3 minutes of those errors) before that.
Possible solutions.. which I've only done after it started working again but didn't cause anything bad to happen. So far have been without any of the previous issues, plus my original long standing issue of not being able to send texts, get any sort of data, or call (I call it the up arrow without a down arrow problem where the phone is trying to connect but doesn't receive anything back). These solutions were originally posted here:
http://www.google.com/support/forum/p/android/thread?tid=3f4ad5ffac46bf92&hl=en
http://www.google.com/support/forum/p/android/thread?tid=47dc569ca9667ba7&hl=en
They're also solutions I've come up with for my issue as well and seemed to have worked for a couple of others.
It's as follows:
*#*#4636#*#* and selecting phone information. Press the menu button and select the proper band. I'm guessing if you're in canada on rogers which uses the same band as AT&T US you'd select USA band. Anyway after selecting it should re register on the network.. close out of there. Turn off and turn on the phone and see how that goes. For people in other regions I have no idea what to properly select but it was posted on one of the threads on the google forums that it should be "automatic". Check with your provider and/or google tech support.
Another thing I've seen is again in the *#*#4636#*#* menu under phone information put in (THIS NUMBER IS ONLY VALID FOR TMOBILE USA) under SMSC 12063130004 and press update. Call your provider for your number. Restart the phone.
Less likely solutions (in order of descending likeliness to help you in your particular case):
Hard reset and/or verify the APN settings for your carrier. I've been told non factory default APN values for tmobile over the phone (google support) so I don't know if verifying them or asking for them will help or cause more issues but sometimes there's apps the mess with the APN values which could cause some of your issues. So while this has a high potential to help, it's easy to screw up. Hard resetting the phone will give you factory default values (I'm 99% certain but from what I remember). Changing them from non factory default isn't a terrible thing however call your provider rather than google tech support for the values.
Calling up and asking to add/verify the IMEI number to the network (i never did this until recently although it didn't fix my issue right when they added it anyway) and/or doing a network cancellation might help. Unlikely but if you' RMA'ed once they'll have the wrong one on file and could cause issues depending on the network.
Replacing the SIM card. Takes literally 30 seconds. They ask for account info at the store, they scan the new one.. and give it to you. You pop it in and go. If you have an older SIM card this DEFINITELY could be the issue. Its unlikely its defective but it's always worth ruling that out.
Let me know if any of these help.

blisk said:
I'm getting RMA'ed, again, for the same issue plus not being able to register on the network after I get the x with four blank bars. I get either "error searching for networks" or "sim is invalid on this network". It's since fixed itself... somehow but i was without any phone service despite trying everything (calling tmobile for network outages, hard reset, reseating the sim card, other stuff) for about 3-4 hours twice now... and a few shorter time periods (1-3 minutes of those errors) before that.
Possible solutions.. which I've only done after it started working again but didn't cause anything bad to happen. So far have been without any of the previous issues, plus my original long standing issue of not being able to send texts, get any sort of data, or call (I call it the up arrow without a down arrow problem where the phone is trying to connect but doesn't receive anything back). These solutions were originally posted here:
They're also solutions I've come up with for my issue as well and seemed to have worked for a couple of others.
It's as follows:
*#*#4636#*#* and selecting phone information. Press the menu button and select the proper band. I'm guessing if you're in canada on rogers which uses the same band as AT&T US you'd select USA band. Anyway after selecting it should re register on the network.. close out of there. Turn off and turn on the phone and see how that goes. For people in other regions I have no idea what to properly select but it was posted on one of the threads on the google forums that it should be "automatic". Check with your provider and/or google tech support.
Another thing I've seen is again in the *#*#4636#*#* menu under phone information put in (THIS NUMBER IS ONLY VALID FOR TMOBILE USA) under SMSC 12063130004 and press update. Call your provider for your number. Restart the phone.
Less likely solutions (in order of descending likeliness to help you in your particular case):
Hard reset and/or verify the APN settings for your carrier. I've been told non factory default APN values for tmobile over the phone (google support) so I don't know if verifying them or asking for them will help or cause more issues but sometimes there's apps the mess with the APN values which could cause some of your issues. So while this has a high potential to help, it's easy to screw up. Hard resetting the phone will give you factory default values (I'm 99% certain but from what I remember). Changing them from non factory default isn't a terrible thing however call your provider rather than google tech support for the values.
Calling up and asking to add/verify the IMEI number to the network (i never did this until recently although it didn't fix my issue right when they added it anyway) and/or doing a network cancellation might help. Unlikely but if you' RMA'ed once they'll have the wrong one on file and could cause issues depending on the network.
Replacing the SIM card. Takes literally 30 seconds. They ask for account info at the store, they scan the new one.. and give it to you. You pop it in and go. If you have an older SIM card this DEFINITELY could be the issue. Its unlikely its defective but it's always worth ruling that out.
Let me know if any of these help.
Click to expand...
Click to collapse
I`ve tried all the solutions u`ve mentioned except for swapping to a new SIM card... I guess it might just be my next step but I have my doubts

I get this kind of issue occasionally, under these specific conditions only:
1. I'm at work.
2. I bring my phone with me into an area with no signal (screen says no signal, and I have 4 blank bars with an X) for more than a couple of minutes (for me, it's the room with the coffee machine - which I use a lot - no provider gets signal there on any phone).
3. It doesn't always happen, just sometimes, but when I go back to my desk, it won't reconnect.
4. Going into and out of airplane mode fixes it every time. However, with the latest CM and Ivan's Diet kernels, going into and out of airplane mode causes an immediate reboot when I try to come out of it, and only when I'm NOT connected by USB and when I AM coming from "dead" service, making logging the problem, well, problematic. Using other kernels (even OC'd kernels) does not seem to cause this airplane mode problem.

Only had this happen once trying to send a plain old SMS. I restarted the phone and no problem. I didn't think of trying to make cell calls, but if it happens again, I'll try that.

I too have had this issue with SMS. My browser works though when the SMS problem occurs. Haven't tried a phone call. I am on T-Mobile USA.

Are any of you using task-killers that may somehow be interrupting an important background service?

I have the same exact thing happen and I am on T-mobile US. I was hoping that I wasn't the only one but it seems to happen on all of my phones so I have just chalked it up to network congestion. Unless someone has an actual answer.
I have this issue about once a day.
Running the newest Cyanogen with no other modifications. Radio is the most updated one available.
Flipping to Airplane mode and backed worked on my G1 if I had an issue similar to this but the Nexus doesn't respond to it.
I reboot atleast once a day to fix this. -- Not sure if it's the radio or Cyanogen.
Anyone else have some input?
EDIT: Should have included, I am on T-Mobile
Click to expand...
Click to collapse
Sent from my Nexus One using the XDA mobile application powered by Tapatalk

Have any of you edited your build.prop yet?
This helps with the switch from Edge -> 3G -> H.
I wonder if it would fix this issue.
I don't have the issue so I am unable to test myself.
This link may help. Its at least something to try.
http://forum.cyanogenmod.com/index.php?/topic/1721-3g-connectivity-issue-fix/
This link my help too.
http://forum.xda-developers.com/showthread.php?t=659102

Re:
same thing with me im going to check out those steps your provided.
Sent from my Nexus One using the XDA mobile application powered by Tapatalk

azalex86 said:
Are any of you using task-killers that may somehow be interrupting an important background service?
Click to expand...
Click to collapse
I am using Advanced Task Killer Free, but I'm pretty sure I added important background services to the ignore list so they shouldn't be killed.
Just to double check, what background tasks shouldn't be killed?

help cant connect to network or save proper network or sms settings

a quick history of what I've done so far
Sumsung I897 captivate from ATT unlock and being used on Telus network was working great for about 4 days, then all kinds of problem started cropping up.
Phone came unlocked, I rooted using update.zip from xda, installed rom manager and started removing ATT bloatware, entered SMS and APN info which worked fine.
Yesterday I noticed that where I once got good reception I was now getting nothing and would have to drive down the street before I would get something descent. I thought maybe I'd put it back to stock with rom manager and see if that would help which it did not. It actually made it worse, decided to go all out and use the Odin3 one click downloader just to make sure I was back to stock firmware. This didn't work either but now I can enter the SMS and change the preferred network type but it doesn't save. Preferred network type is grayed out and even though I can change it it never save same as SMS.
Now I can't hold connecting in my living room where my wifes Milestone gets full bars. I tried taking the phone to where I had the best signal and change the preferred network, SMS, and set the network operator but it doesn't save any info, can't find on operator half the time on manual or auto and gave me an error and logged it to #*9900#
I've been at this for 2 days straight and can't figure out how to get it right back to stock, it seems to keep hanging onto the same preferred network and not saving anything I enter.
What can I do to get back to stock, and it has to be something that wipes everything clean, clean, clean, because even the GSM disconnects stay logged under *#*#4636#*#*
***I desperately even tried pulling the batt and SIM card for the night in hopes that would do something.

So, if I'm understand what happened correctly, you bought an unlocked Captivate, rooted it, deleted some bloatware, entered your Telus APN info and everything worked awesome for about four days. Now everything has gone down the hole. Is that right?
If that is the case, then we need to figure out what changed. Using Odin3 would have definitely put you back to stock/unrooted your phone, I don't think you could go back any further than that. If I were you, I would act like I first got the phone. As in, I would do everything you did to it, as if was day one. At one point, everything worked fine. Try to recreate that. You can always look into exchanging it or perhaps Samsung customer support can give you a little more insight to what's going on. Here's the number if you want to try them out.
Samsung customer service - 1.800.726.7864

Thanks, I've gone through the process a few times today from start to finish trying to figure it out ... maybe some of the problems aren't real problems and just limitations that I didn't know where their. I've since flash with odin3+re-partion to the bone stock i897UCJF6 as in not the one click method. It loaded fine but still have the same issue, I can't set preferred network type or get it to keep the number entered into SMSC. I think if I can get passed that I'll be be one the up side of winning. I keep noticing that the log of GSM disconnects never clears or the usage statistics under *#*#4636#*# , I'm thinking its in the same area that other bad data is being held onto instead of being cleared when flash firmware or factory reset.
Is anyone able to change preferred network type? maybe I was never able to change it but I think I should be able too.
I may be wrong in assuming this but I don't think ATT is going to be interested helping me connect one of their handset that I'm trying to use on foreign network, but I could be wrong and is an open option.

*#*#197328640#*#*
debug screen
phone control
network control
band selection
wcdma band
wcdma all
menu->end
used this to lock my phone to WCDMA only so that problem is solved
*** never mind posted to soon it still didn't stick after rebooting
be carefull using the service menu as I have no idea what most of this stuff does

I got the SMS service number issue fix by taking out my sim, swapping in another known working sim from the same network, setting the service number, pressing update and then swapping back. Before every time I tried to update the service number it spit out an "update error" can anybody tell where the SMS config data is stored? on the phone or sim.
The only problem I'm having now is with reception which maybe fixable if I can set the preferred network to WCDMA only. But the button for that option is a light blue colour vs other phones that I can change this setting on. Does the blue mean anything like a locked function or something that set by the firmware as unchangeable?

Help needed! new phone - mobile data issues

I finally decided to upgrade from my Nexus 4 to a Z1, and I moved my Three UK contract SIM into the new Z1, it installed the internet & MMS settings and it was fine. But all of a sudden completely random the speeds will drop, the ping will go into the 800s and I can't really load anything on my device.
I'm really not sure what the issue is, whether it's a problem with the drivers, a problem with the actual antenna or if it's just an issue with the software.
I've just tried a factory reset and I'm still getting the same issues, it will be fine most of the time and then just deteriorate until I just can't load anything. The only thing that seems to fix this is a reboot or turning off mobile data and turning it back on again. Obviously this isn't acceptable when I've just paid this amount of money for the phone.
Does anyone have any ideas? I don't want to flash another ROM in case I do actually send it back because won't it void the warranty? If not, how do I go back to stock if I have flashed another ROM?
When putting the SIM back in my Nexus 4, there's no issues at all as there wasn't when I used it before.
I'm really lost, I love this phone but it seems I may have to send it back... Help appreciated!

Contact Call Center of your Provider an tell them to give you the right settings for internet and mms, the settings installed automatically on Z1 not always work. They will send you an sms with the installation. I had similar problem solved with the sms.

[Q] Troubleshooting Mobile Data

Good night my fellow modders. Tonight i come with a particular query, mainly, how do i go about troubleshooting the 3G connection of the motorola razr i. Ever since i flashed Omar's Motorola 4.1.2 Rom from Jan-01-2014, i haven't been able to get internet access through my carrier (Not even through 2g) and ive already checked its not a carrier issue (Since i can use my simcard to browse the internet in another phone just fine), i even tried doing a nandroid restore from the stock firmware i had previous to starting this adventurous task to get things working again, but even then the mobile broadband service is a no-no.
I'm at a loss on what to do, since i've already tried reflashing the ROM, reset-ted the phones APN's, and i've also done the suggested file modification of the losialert timer to both, 1000 and 500 (as seen in the same thread). However those efforts have been to no avail and im quite at a loss on what to do.
Im sorry if my english isnt fully understandable (Its not my native languaje) and im also sorry if this isnt the righ section to post about it, but i cant post directly in the thread since I'm a new member. I thank you beforehand for any and all guidance or help you can offer me.

Don't worry, English is not native language for most of forum users.
First of all buy any pre-paid card from different carrier or borrow it sim-card from friend and test it.
I had similar situation with Virgin Mobile. We have quite few operators in my country and I tested all of them but for this I wasn't prepared. I had my new RAZR i and there was no option to use internet with Virgin Mobile.
After few days of fight with different ROM, modding system, installing apps to APN's I figured it was sim-card. Some carriers have old sim-cards which have something wrong with MCC and MNC code and all phones can work on it but not Android 4.1 and above caused APN automation.
I even called to Virgin to ask for changing sim-card but they said they don't have different version of sim-cards, so I asked "WHAT, so every people in Your network doesn't have internet on Android 4.1+??!!" and they said "Yes, it seems so".
And there was no other way but change carrier. Now I have fully working internet without any modifications.
Sorry for so long and boring reply but for my almost 10 years working with mobile phones it was first situation like this.

Chamelleon said:
Don't worry, English is not native language for most of forum users.
First of all buy any pre-paid card from different carrier or borrow it sim-card from friend and test it.
I had similar situation with Virgin Mobile. We have quite few operators in my country and I tested all of them but for this I wasn't prepared. I had my new RAZR i and there was no option to use internet with Virgin Mobile.
After few days of fight with different ROM, modding system, installing apps to APN's I figured it was sim-card. Some carriers have old sim-cards which have something wrong with MCC and MNC code and all phones can work on it but not Android 4.1 and above caused APN automation.
I even called to Virgin to ask for changing sim-card but they said they don't have different version of sim-cards, so I asked "WHAT, so every people in Your network doesn't have internet on Android 4.1+??!!" and they said "Yes, it seems so".
And there was no other way but change carrier. Now I have fully working internet without any modifications.
Sorry for so long and boring reply but for my almost 10 years working with mobile phones it was first situation like this.
Click to expand...
Click to collapse
Thank you for taking the time to answer my query. Unfortunately, i believe your case doesn't apply to me, since i had no issue using the internet with my operator (Telcel) before flashing the new ROM. I've also already called my operator and they made several procedures to try and reestablish my service, however none of them worked, but they assure me it's a problem with my device, since their service is working correctly.
I have no idea what to do now, but i hope can get the minimum required limit i need to ask for support directly on the thread ;(.

I don't know if this will help.
I had this problem with my brothers phone (galaxy s4 mini) last night. Data wouldn't turn on in anyway. Flash in new ROM from recovery didn't did the trick, nor a nandroid did. The only way I have got it to work was flashing a stock ROM through ODIN. In this case it would be RSD lite. Maybe it I'll work, but be aware of the flashing problems red lite can give. Read it a bit. Good luck!
Sent from my GT-P5110 using XDA Premium HD app

Do you have the correct APN entries?? You might need to add it manually...
That happens because it doesn't auto configure (correctly, or none at all) for some carriers because I don't have all the carriers in apn-config.xml -- while your specific carrier ROM might have had it already configured and a specific xml list for them.
If you reset APN's and see all the appropriate ones added it might be configuring a wrong ones by default according to the data from the apn-config.xml one in my ROM, just configure accordingly to your carrier information
Note 1: My ROM does not touch the radio, and since the radio images are international anyway it does not make sense to flash recovery images or anything ... the only problem (assuming you did not break anything in hardware during ROM flashing) comes from the android /system partition which is prone to have incorrect carrier settings for data configurations... any bad number or password updated on your carrier it would be configuring something else by doing "reset to default"...
Note 2: To save the APN entry don't exit ... press the options menu and hit save when done modifying -- else it won't remain saved!

The problem starts when You updated from 4.0.4 to 4.1.2??

Hazou said:
I don't know if this will help.
I had this problem with my brothers phone (galaxy s4 mini) last night. Data wouldn't turn on in anyway. Flash in new ROM from recovery didn't did the trick, nor a nandroid did. The only way I have got it to work was flashing a stock ROM through ODIN. In this case it would be RSD lite. Maybe it I'll work, but be aware of the flashing problems red lite can give. Read it a bit. Good luck!
Sent from my GT-P5110 using XDA Premium HD app
Click to expand...
Click to collapse
Did you try to change the APN settings before you tried this? I'm only asking because I'm considering this option, but i would like to rule it out as my final option, because since i started having this issue I've been reading a lot, and the way you fixed your problem sounds like the stock ROM corrected your issue by giving you the default APN's for your carrier.
Chamelleon said:
The problem starts when You updated from 4.0.4 to 4.1.2??
Click to expand...
Click to collapse
I'm afraid i was already on 4.1.2 by the time i installed Omar's custom ROM.
Omar-Avelar said:
Do you have the correct APN entries?? You might need to add it manually...
That happens because it doesn't auto configure (correctly, or none at all) for some carriers because I don't have all the carriers in apn-config.xml -- while your specific carrier ROM might have had it already configured and a specific xml list for them.
If you reset APN's and see all the appropriate ones added it might be configuring a wrong ones by default according to the data from the apn-config.xml one in my ROM, just configure accordingly to your carrier information
Note 1: My ROM does not touch the radio, and since the radio images are international anyway it does not make sense to flash recovery images or anything ... the only problem (assuming you did not break anything in hardware during ROM flashing) comes from the android /system partition which is prone to have incorrect carrier settings for data configurations... any bad number or password updated on your carrier it would be configuring something else by doing "reset to default"...
Note 2: To save the APN entry don't exit ... press the options menu and hit save when done modifying -- else it won't remain saved!
Click to expand...
Click to collapse
Thanks a lot for getting out of your way to help me Omar; After troubleshooting the device and several talks with my network carrier I've managed to get a so-so signal. I'm not sure if your ROM configures correctly or not the APN'S of my carrier (Telcel) because when i edited them everything was configured as it was supposed to be (I'm not sure about the password since i can't see it though), the only thing that was missing was the APN for GPRS, but I've been reading several forums and almost no android device needs this in addition to the 3G APN (I've added it nonetheless but the device isn't actively using it, my guess is that you've got to choose either 3g or GPRS); I also called my carrier, and the allegedly reset-ed my service.
I'm still not sure if the device is working properly, mainly because the internet access through the mobile network has become very unstable (Sometimes i get disconnected randomly, and turning on the Wi-Fi gets me disconnected automatically), and even though the radio almost always gets an H+ signal (Which is kinda funny, because i used to get 3G more consistently before) i don't think this is normal behavior. I think it may have to be with the los alert, because in my desperate attempts to get things working, i reflashed your ROM and it was set to 1000 once again and I also think that the hardware can't be broken because i wouldn't be able to connect to the data service otherwise.
Because of this i would like to ask two very specific queries, is there a way to flash this setting without flashing the entirety of the zip file?; And in case there isn't, if i flash the zip with the new configuration, and then proceed to perform a nandroid backup of my previous build, will i lose the new 00radio configuration?
I will be tinkering with the device this weekend and will report back if i can find whats wrong, just in case it's something else and somebody needs help troubleshooting this in the future. Thanks to everyone that has contributed so far, i wouldn't have learned so much in so little time without your help.

TemplarWithin said:
Did you try to change the APN settings before you tried this? I'm only asking because I'm considering this option, but i would like to rule it out as my final option, because since i started having this issue I've been reading a lot, and the way you fixed your problem sounds like the stock ROM corrected your issue by giving you the default APN's for your carrier.
Click to expand...
Click to collapse
Hmm, don't know for sure. I have made some changes within the APN list to get it working, didn't work. But the rare thing was that the cm11 one did have data and when he flashed his stock back with a nandroid or a stock zip file data wouldn't turn on anymore. So I can't rule out that it was the APN list that was making trouble, because even with stock it did not work. Only by flashing through Odin it worked. Radio hasn't been flashed in that process.
Sent from my GT-P5110 using XDA Premium HD app

[Q] HELP: Lost cellular data and service

Anyone have a fix for this? On Verizon and after almost 4 weeks I have lost my cellular service and data. I noticed when I went to check up on my phone right now that it was finishing a boot-up screen and then never had any bars at the top. Dug deeper and found no service at all. Wiped dalvik and cache and seemed to be bars for under a second and then gone. I am on sensei kernel and am thinking about doing a factory reset and reverting to stock kernel. But I really don't want to lose the benefits it came with.

rmx36 said:
Anyone have a fix for this? On Verizon and after almost 4 weeks I have lost my cellular service and data. I noticed when I went to check up on my phone right now that it was finishing a boot-up screen and then never had any bars at the top. Dug deeper and found no service at all. Wiped dalvik and cache and seemed to be bars for under a second and then gone. I am on sensei kernel and am thinking about doing a factory reset and reverting to stock kernel. But I really don't want to lose the benefits it came with.
Click to expand...
Click to collapse
Well, this is odd. After a month of perfect service, I suddenly cannot get LTE, only 3G. Even nandroids of prior ROM's will not boot into LTE. Is VZW LTE down or should I do a total clean reformat? i do have factory images and everything is backed up. Just a pain.
Very strange. I was flashing various ROM's (CM 12 based - am testing for someone) and at one point pulled out SIM and replaced it. I checked to make sure it is seated right since then. Again, no longer get LTE.
Was on Sensei kernel as well. Let me try flashing stock kernel from ROM first. EDIT: NOPE! Flashing the stock kernel from the ROM did not do it. Looks like total reformat/flash is next!

markwebb said:
Well, this is odd. After a month of perfect service, I suddenly cannot get LTE, only 3G. Even nandroids of prior ROM's will not boot into LTE. Is VZW LTE down or should I do a total clean reformat? i do have factory images and everything is backed up. Just a pain.
Very strange. I was flashing various ROM's (CM 12 based - am testing for someone) and at one point pulled out SIM and replaced it. I checked to make sure it is seated right since then. Again, no longer get LTE.
Was on Sensei kernel as well. Let me try flashing stock kernel from ROM first.
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I just got my Nexus 6 and I am also on Verizon and had the cell coverage drop too. I backed up my apps with titanium backup and did a factory reset and signal came back. I only had it for a day and went to Canada and on my way back to the US I noticed the cell bars were gone. I was just rooted and boot loader unlocked and otherwise stock. I read online that others had this issue when they got to places in the US that had little or no signal. I also noticed that under cellular network settings it loads up with Global under the preferred network type even though it has an option for "LTE (recommended)" and if you choose LTE, global is never an option again until you do a factory reset and it loads with it pre selected. With global selected it works perfectly with calls and LTE, so not sure what that means or if my selecting LTE made it drop the signal after going back from Canada.

Yep, total flash of factory image fixed it. Sigh. Early enough in the day for me to get everything set up again.

Same. About to do it too... I've done too many factory resets with this already. Kind of annoying.

I am in the same boat. Had no problems until I flashed bliss 1.5 then was stuck on 3g. Tried a clean flash of Slim and still stuck on 3g. I will try a stock rom but I am not very hopeful at this point. It's looking a like a reformat here as well :/

Ended up having to format everything and start from scratch again. I'm running a stock ROM now and in weary to try another cm ROM

Don't know if it'll help, but try LTE Discovery app in the Play Store. I use it from time to time to reset my data connection.

Having the same issue, running CM12 daily, have been for a week or so. Midday today it drops LTE, 3g data was working, then a few minutes later to no data. I didn't change anything, nothing new installed. I did reboot the phone at some point before this but that is all...
My only fix was to backup via trwp, restore stock rom, factory reset, reboot & let sim activate, then restore cm12 via twrp... it's a 20-30 min fix all said and done.... pita
Maybe its something Verizon is doing, because I didn't change anything and then next thing you know no data. I hope it's a simple fix for CM12 but I see this popping up more the last few days. Hopefully someone will figure it out. I like CM and prefer it over stock but I am not going to do this multiple times a day just to keep CM...

lohonda said:
...and if you choose LTE, global is never an option again until you do a factory reset and it loads with it pre selected.
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I just checked and global is still an option for me. I've bounced back and forth, looking to see if anything changes..

Same thing has happened to me last night, lost connection to VZW cell and data. Looking at the field test menus, it seems like the SIM/device understand GSM but NOT CDMA anymore. So I believe the issue has something to do with that. Tried everything, but will nuke and repave most likely....also lost Global as well. and LTE Discovery shows GSM stuff nothing for CDMA
Tried the SIM in another device and it works so its not the SIM.

OK I tried a world of things to recover like some of you may have....its something in Userdata because if I flash everything but userdata it wont work. I am going to try and recover from the backup I had before this happened to see if that works....otherwise rebuild from scratch
will post back
UPDATE: So restoring a backup seems to be ok once you get the SIM back.

Having the same issue over here as well... After a month or AI of having the 6, now I randomly drop service where I would normally have full LTE. I almost NEVER get LTE now and am at most on H with a couple bars then it drops out again. Have also.noticed WiFi connection is very shakey.
Any one find a fix?

I had an issue where i couldnt get my phone to connect any network. Took me long rime to realise, that entering my PIN-number too fast caused the issue xD it unlocked the sim, but didnt let me connect any network... Dunno if this helps anyone, but definetly the most cryptic issue I've ever had.

th3g0d said:
I had an issue where i couldnt get my phone to connect any network. Took me long rime to realise, that entering my PIN-number too fast caused the issue xD it unlocked the sim, but didnt let me connect any network... Dunno if this helps anyone, but definetly the most cryptic issue I've ever had.
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Troubleshooting my wife's N6 here. Your PIN issue doesn't make sense to me because the phone should be connected to the carrier when locked. Are you talking about WiFi? Because that should be connected too when locked unless settings have been changed from their default (ie, turn off wifi when locked/asleep or something)

quidpro said:
Troubleshooting my wife's N6 here. Your PIN issue doesn't make sense to me because the phone should be connected to the carrier when locked. Are you talking about WiFi? Because that should be connected too when locked unless settings have been changed from their default (ie, turn off wifi when locked/asleep or something)
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I'm talking when you turn on your phone and it asks for pin number to unlock your sim. Some how it seems that if you enter your pin too fast, it bugs the phones radio somehow and you can't connect to your carrier but if you wait like 5sec before entering the pin, it connects to the carrier and the (!) Mark goes away. Try rebooting the phone and see if it helps? Even I think its a weird issue
Edit: OK, just pinpointed MY issue. I have to wait for the "no service" text to change into "emergency calls only" before entering my pin or I don't have any service just the exclamation mark :/

th3g0d said:
I'm talking when you turn on your phone and it asks for pin number to unlock your sim. Some how it seems that if you enter your pin too fast, it bugs the phones radio somehow and you can't connect to your carrier but if you wait like 5sec before entering the pin, it connects to the carrier and the (!) Mark goes away. Try rebooting the phone and see if it helps? Even I think its a weird issue
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Click to collapse
Thanks. I told her about it and she will give it a try, or just remove the pin altogether as a test. It is a weird issue. She is missing important calls from her elderly parents at night and it is rather frustrating. Turning wifi off also seems like a bad fix.