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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?

[Q] Problem Roaming

I've never had a need to roam until at the job site I've been working for the past few months, so this was never a known issue. When I try to make a call, the phone rings a few times, then transfers to a Verizon recording saying "unable to verify your phone, please hold while we transfer you to a Verizon operator."
Currently running DamageControl v2.09.01, but have tried with several Fresh builds(2.0d-2.33) as well, all with the same result.
As far as the radio goes, I've tried: 2.42.01.04.27(current),2.42.00.03.10, 1.04.01.09.21(1.5 stock radio) and 2.32.40.11.03(Verizon radio)
My PRL is current at 60668, but have had this problem since 60664. And have tried updating my profile multiple times. PRI is 1.70_003. ##786# didn't help either.
Any ideas anyone? Sprint is useless as always, just suggesting to do things I've already dne such as update profile and PRL. My fear is that I will have to run the new RUU and re-root in hopes that it will resolve the issue. Thanks in advance.

Anyone?!??

Around my work I have had this exact issue.. I listened to the message which gives the tower number and route and called Sprint to report the tower. The rep on the phone took all the information and sent out a tech to the area to track the tower down. You might try the Antenna app. (the one that pinpoints the location of the towers). It has been happening to me for a 2 months. It seems to affect other sprint phones too... if it gets too bad I would find out the tower and see if you can edit your PRL list to exclude it.

Hmm, I've never gotten a message with any tower information. Will try again tonight. I guess maybe I should try to find another area that my phone will roam in and see if the same happens also.
Sent from my HERO200 using XDA App

Try going into the Phone Information menu.
In the Dialer, type *#*#INFO#*#*. (INFO = 4636)
Then touch Phone Information.
Scroll down and you should see a line that says "Set preferred network type:" followed by a drop-down menu.
Does it say "CDMA auto (PRL)"? If not, follow these steps:
hit Menu, then tap Select radio band. You'll get a Force Close and that's okay. Let it reload all that stuff, then change the drop-down menu to "CDMA auto (PRL)". Then back out of everything, reboot. Once the phone comes back on, go back into *#*#4636#*#* and into Phone Information to see if that setting sticks. That may fix some of your network and roaming problems.

@chromium, thanks, but I've checked all that as well, just forgot to mention it in the op.
Sent from my HERO200 using XDA App

Just an update to this, I switched to CM6rc1 which has the option to force roaming, and it doesn't matter where I am I still get the verizon recording. Whats even stranger, it says if this problem persists call #8899. The recording on that number says, "Cingular no longer supports 611 roaming service"

For anyone who cares, I took the plunge, ran the RUU, re-rooted, nandroided back and wah-la...it works now...

[SOLVED][Q] One has lost signal and settings

Hey all I have rooted and S-off with moonshine and flashed This Rom to my Sprint Htc One. I then programmed it to work with page plus cellular, in which it was working great for about 3 days. I had gotten a text around 3:30AM & when I woke up the phone had NO signal, service, or data! Upon further examinations, I found that my settings to adjust the roaming features was GONE! The ESN checked out clear thru Sprint so I'm not worried about the phone being shut off or anything. Could this be an H-boot issue or what? I have since reinstalled the mentioned rom above but my settings are still gone. The pull down menu shows the Airplane mode to be on but it is NOT on anywhere else and I can't turn it off in the pull down menu. I hope this is my problem but I really need to know how to resolve it. I've tried to do a screenshot of the pull down menu but it grabs the home screen.
EDIT: I have resolved my issue. When I originally programmed my phone, I left the sim card from sprint in the phone and went with page plus. Evidently, with the sim in place, sprint was able to change some settings to shut off my radio. I found out thru sprint that the phone was activated on july 21st & deactivated on july 22nd. This gave them about 12 days to shut off my radio after deactivation. I went into cdmaws and found what they had changed, switched it back for a working radio again.

gimmeitorilltell said:
Hey all I have rooted and S-off with moonshine and flashed This Rom to my Sprint Htc One. I then programmed it to work with page plus cellular, in which it was working great for about 3 days. I had gotten a text around 3:30AM & when I woke up the phone had NO signal, service, or data! Upon further examinations, I found that my settings to adjust the roaming features was GONE! The ESN checked out clear thru Sprint so I'm not worried about the phone being shut off or anything. Could this be an H-boot issue or what? I have since reinstalled the mentioned rom above but my settings are still gone. The pull down menu shows the Airplane mode to be on but it is NOT on anywhere else and I can't turn it off in the pull down menu. I hope this is my problem but I really need to know how to resolve it. I've tried to do a screenshot of the pull down menu but it grabs the home screen.
Click to expand...
Click to collapse
i say reinstall the RUU to return to stock, just to check if your phones hardware are %100 fine then do all the mods agains

Muhammad.Muayad said:
i say reinstall the RUU to return to stock, just to check if your phones hardware are %100 fine then do all the mods agains
Click to expand...
Click to collapse
I will give this a try and here is a screenshot.. As you see the wifi still works but the radio has been disabled.
Edit: I completed the RUU and still have NO cell radio, wifi works fine. I've only had this phone 3 days before it stopped working and NEVER dropped it or abused it. I have read posts where some folks had the antenna wire come off but I'm thinking this is just what sprint is telling people. I don't see where there would be enough room inside the ONE for the wire to just "Fall Off"!
Sent from my HTCONE using xda app-developers app

Well I still have an Ipod like Htc One! No luck yet on restoring the cell radio and I'm kind of lost where to go from here. I'm guessing if the antenna wire came off, there would be no settings for roaming so I'll take it apart to see if that's the problem.

Help with NV items
I have tried every ruu and even went back to the 1.44 hboot to let my phone update itself to android 4.3. When I do the factory reset, my nv settings stay just as I programmed it to page plus. What I need is for someone to send me a copy of their NV items read thru cdmaws paid version or qpst, any means you have to read Please? I don't need or want any imsi or meid or personal info, just the nv items from a working phone. I'm really beginning to think that my phone needs to be replaced but I bought it from ebay and am not a sprint customer. If anyone knows how I could go about getting this replaced thru htc Please let me know but I would like to try the nv items first. If I messed up the phone then I'll fix it but I really think I have a hardware issue, otherwise I'd never think about a warranty.

Just out of curiosity, when you flashed the software to your phone and you lost your signal and settings, did the baseband on the phone show as "Unknown"? I get that from time to time, either due to incompatible software or a bad flash.

The phone actually worked great for about 3 dats and the baseband was and still is showing. I feel that I may need to send it in for warranty but I'd like to have the original nv items to flash first to see if my cell radio will work. The wifi works fine and I can change the radio in *#*#4636#*#* to anything I wish but that still doesn't give me reception. I've been flashing phones for 3 or 4 years & have seen the baseband show up as unknown but I've never lost cell radio until now. :crying:

" I don't see where there would be enough room inside the ONE for the wire to just "Fall Off"! "
Well it actually can. Not fall off literally but rather disconnect from its socket. This has actually been an issue with the HTC OneX's wifi antenna also.. If u check out this guide: http://www.slashgear.com/htc-one-teardown-proves-durability-a-top-priority-28275687/ you will see the black cable that goes from top to bottom and connects two pcbs. That's your culprit if indeed you have a hardware issue. What i would do if i were you is first find one of my carrier's antennae and go as close to it as possible and see if you get any reception at all (best chance i guess is in a subway station). I guess that once you're that close to a transmitter your circuitboard is sufficient antenna though i might be wrong. If i am right and you get reception than its hardware. If you dont get reception than the cause is uncertain..can be hardware, can be software.. Anyway, i wish you best of luck with fixing your problem!
Cheers!

Wish me luck, today I'm headed to the sprint store to see if the tech can find anything out for me.
Edit: No such luck! The guy told me that when the phone was deactivated thru sprint that the radio was shut down and if I got a contract to activate the phone, then it would work! Hmm I didn't buy that so I told him I programmed it to page plus which worked for a while & bla bla bla... No go. Does anyone know how or if I could send it back to HTC for repair?

Hands free activation

Anyone know how to get rid of the hand free activation that pops up everytime i restart my phone?

cudos01 said:
Anyone know how to get rid of the hand free activation that pops up everytime i restart my phone?
Click to expand...
Click to collapse
I haven't gotten around with it yet. The last time I tried, I got the Security Exception. For now I just bear with it, I boot my phone and do something else so that I won't notice. haha.
Will follow this post just to be updated.

ijball said:
I haven't gotten around with it yet. The last time I tried, I got the Security Exception. For now I just bear with it, I boot my phone and do something else so that I won't notice. haha.
Will follow this post just to be updated.
Click to expand...
Click to collapse
Mine never does that. Does it succeed? It must succeed to not pop that up.
One thing I've learned the hard way several times, is if you have AdBlocker running it screws up Activation, Update PRL etc. But you should be able to turn it back on later.
If it is failing activation even with adblocker off try activating with WIFI connection up.
You can also try ##72768# but be warned if it does not succeed you will have no voice or data. I recommend doing this only with a solid Sprint Signal 3G or 4G, but WIFI will work too.
If you call sprint, 99% sure that's the first thing they will try.
If you are using GSM in another country there is an app you can freeze. Look in Sprint M9 forums, this is asked all the time on how to kill it.

mswlogo said:
Mine never does that. Does it succeed? It must succeed to not pop that up.
One thing I've learned the hard way several times, is if you have AdBlocker running it screws up Activation, Update PRL etc. But you should be able to turn it back on later.
If it is failing activation even with adblocker off try activating with WIFI connection up.
You can also try ##72768# but be warned if it does not succeed you will have no voice or data. I recommend doing this only with a solid Sprint Signal 3G or 4G, but WIFI will work too.
If you call sprint, 99% sure that's the first thing they will try.
If you are using GSM in another country there is an app you can freeze. Look in Sprint M9 forums, this is asked all the time on how to kill it.
Click to expand...
Click to collapse
I'm on GSM in another country. I tried methods described before to turn it off before, but I ended up bricking my phone. If I started to be bothered by it again, I might try freezing it. Something I noticed though, I didn't notice the Activation prompt on my recent reboots recently.

For the information of all...
Dont try remove or Rename "LGStartupwizard.apk" remove this APK cause Bootloop and stuck at the "LG Security Error" and the only way to go back to life the G4 is flashing TOT file
cheers!

It might be wonky activating because your on a gsm network with a CDMA based phone.
Sent from my LG-H810 using XDA Free mobile app

soulysephiroth said:
It might be wonky activating because your on a gsm network with a CDMA based phone.
Sent from my LG-H810 using XDA Free mobile app
Click to expand...
Click to collapse
Nope I use this phone in GSM Network and run fast
Sent from my SPH-L720T using XDA Free mobile app

Solution to this on a rooted phone
U will need Shortcut master Elite Installed on you PC
Open Shortcut master press "menu" and press "search" , in search field enter
Code:
iot.ltesetting
and press "search", after search press on the first result "Service Programu" and
press "launch", in new window press "Operation Mode" and change on "Lab Network" after that
your smartphone do reboot.
I have done this on g3 check if that works on G4 as well

parin11 said:
Solution to this on a rooted phone
U will need Shortcut master Elite Installed on you PC
Open Shortcut master press "menu" and press "search" , in search field enter
Code:
iot.ltesetting
and press "search", after search press on the first result "Service Programu" and
press "launch", in new window press "Operation Mode" and change on "Lab Network" after that
your smartphone do reboot.
I have done this on g3 check if that works on G4 as well
Click to expand...
Click to collapse
Thanks Parin,
It worked perfectly on my G4 Sprint..

AVishvas said:
Thanks Parin,
It worked perfectly on my G4 Sprint..
Click to expand...
Click to collapse
Welcome

Data capability lost after signal loss

Every day I travel on the London Underground and obviously lose 4G signal when I am below ground.
Since the last update a week ago to 10.2.26.0, when I come back into a 4G area I cannot use any data services without either rebooting the phone or toggling Mobile data on and off, which is very frustrating.
The bars will show full 4G but no data will flow on any app until I do this.
Has anyone else experienced this?

Same on mine...

Yes same issue here

I had this happen to me earlier and it turned out that the access point settings had been altered at update from one firmware to the next. The system tries to install some generic APN-settings based on my operator’s name as my operator has no automatic way of installing them the usual way on this phone as it does on the more commonly used brands.
Check with your operator what the settings should look like and enter them under the access point settings for the sim-card if the current ones look off. Just an idea because I had the same problem going back to 4G from Wi-Fi. Reboot or airplane mode was the only thing to fix it for me. To be more exact it was the address for the setting “APN” that was wrong for me. The system had put an address that wasn´t a valid IP-address. Obviously, Xiaomi had tried to guess the address based on my operator name but got it wrong. As soon as I got the right setting in place all problems were gone.
This problem got worse as I had activated LTE voice calls. Before that it only happened occasionally, but with LTE-voice calls activated it happened every time I went from Wi-Fi to 4G.

gerhard_wa said:
I had this happen to me earlier and it turned out that the access point settings had been altered at update from one firmware to the next. The system tries to install some generic APN-settings based on my operator’s name as my operator has no automatic way of installing them the usual way on this phone as it does on the more commonly used brands.
Check with your operator what the settings should look like and enter them under the access point settings for the sim-card if the current ones look off. Just an idea because I had the same problem going back to 4G from Wi-Fi. Reboot or airplane mode was the only thing to fix it for me. To be more exact it was the address for the setting “APN” that was wrong for me. The system had put an address that wasn´t a valid IP-address. Obviously, Xiaomi had tried to guess the address based on my operator name but got it wrong. As soon as I got the right setting in place all problems were gone.
This problem got worse as I had activated LTE voice calls. Before that it only happened occasionally, but with LTE-voice calls activated it happened every time I went from Wi-Fi to 4G.
Click to expand...
Click to collapse
Mine is unchanged from update, and it's as indicated on my operator site

meti84 said:
Mine is unchanged from update, and it's as indicated on my operator site
Click to expand...
Click to collapse
So do you have:
wap.tim.it
or:
ibox.tim.it

gerhard_wa said:
So do you have:
wap.tim.it
or:
ibox.tim.it
Click to expand...
Click to collapse
Well, I didn't update my profile in a while, I have fastweb now... BTW I have apn.fastweb.it

meti84 said:
Well, I didn't update my profile in a while, I have fastweb now... BTW I have apn.fastweb.it
Click to expand...
Click to collapse
When I ping that address it comes up as invalid. You should see if there are alternatives.

gerhard_wa said:
When I ping that address it comes up as invalid. You should see if there are alternatives.
Click to expand...
Click to collapse
https://www.fastweb.it/myfastweb/as...ne-configura-internet-su-smartphone-o-tablet/
It's in Italian, but as you can see it's the official Fastweb guide

gerhard_wa said:
I had this happen to me earlier and it turned out that the access point settings had been altered at update from one firmware to the next.
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Doesn't seem to be the issue. I am on EE here in the UK and the APN is correct. Can't see how toggling data off and on would resolve this if the APN was wrong anyway?

meti84 said:
https://www.fastweb.it/myfastweb/as...ne-configura-internet-su-smartphone-o-tablet/
It's in Italian, but as you can see it's the official Fastweb guide
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I can see that but still, do a trace route for apn.fastweb.it and it can´t solve that address so there is something wrong with it. Anyway hope you will find the culprit of your problem!

I almost have the same problem .. after a phone call 4g disappears .. After the talk 4g comes back but the data connection does not work anymore .. Data off and switching on is the solution. I have send my phone back to the retailer i hope dee can fix the probleem.

I have the same issue.......latest Global Beta......switching data off and on for now....and hoping that fix is coming as it is annoying...

Okay so this is found to be experienced by others - how do we bring this to Xiaomi attention? Right now a phone that just randomly chooses to lose data capability is useless, as I lose notifications, messages, home automation activity prompts, Ring doorbell alerts, Nest smoke alarm alerts - pretty much renders the phone useless if I am not connected to WiFi, and the worst is not knowing it's stopped working till I try something.

One thing you could do if you have activated VoLTE is to deactivate VoLTE. If this makes a difference it sugests that something is wrong in your local configuration. Otherwise you may have to take it back to the seller.

Same problem here in Germany with o2.
I just found this solution to slightly another but very similar problem and I'm testing it right now.
Go to the APN settings (Settings -> SIM card Settings) and better do a reset to default (not necessary). Choose the o2 option and in a field called MVNO type select IMSI. You should be fine.
Will report back if this worked.

gerhard_wa said:
One thing you could do if you have activated VoLTE is to deactivate VoLTE. If this makes a difference it sugests that something is wrong in your local configuration. Otherwise you may have to take it back to the seller.
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VoLTE is not enabled on my device, but this doesn't sound likely anyway - I have had the phone since the first week it was available in Europe - over 3 months - but the data stopping working only happened with a recent update. Anyway, this thread and other forums suggest this is a wider issue - can't see that sending it back to the retailer will achieve much as the replacement will likely do the same!

cool400 said:
Same problem here in Germany with o2.
I just found this solution to slightly another but very similar problem and I'm testing it right now.
Go to the APN settings (Settings -> SIM card Settings) and better do a reset to default (not necessary). Choose the o2 option and in a field called MVNO type select IMSI. You should be fine.
Will report back if this worked.
Click to expand...
Click to collapse
The APN settings are all greyed out on EE - I can read them but I can't edit them?

Any news here? I'm still stuck with this annoying problem.
I'm on MIUI 10.2. 9.0 Global and no updates available.

Just came here to say I have he same problem. Not really too annoying as all it takes is toggling airplane mode off then back on after a couple of seconds. But sometimes I don't even know the problem has surfaced and I end up missing notifications.
It happens sometimes even after I enter an elevator then leave.