Database Develop

Calling not possible

Hey together,
since 5 or 6 h I do have a problem:
My One stays everytime on 4G, no change to H,3G or Edge. Means, I can not call out! Unfortunately there is no option to force my One to use only 3G, H, or Edge.
What can I do?
Best regards

Bembel80 said:
Hey together,
since 5 or 6 h I do have a problem:
My One stays everytime on 4G, no change to H,3G or Edge. Means, I can not call out! Unfortunately there is no option to force my One to use only 3G, H, or Edge.
What can I do?
Best regards
Click to expand...
Click to collapse
I don't have a ONE yet, but you should be able to turn off the mobile network in the settings. It is part of the Google design.
My current phone also has a setting under mobile network to change the network mode, which is the same is forcing it between 2g and 3g. There are play store apps that get you to that menu, although there appears to be no way to create a toggle for it from the desktop.

Hm, where can I find that point in my settings?

Bembel80 said:
Hm, where can I find that point in my settings?
Click to expand...
Click to collapse
Just lurking in these forums in anticipation of my HTC One arriving, so can't guide you through the menu yet, but I'd try these things first.
1. A quick toggle in and out of airplane mode.
2. A way to force a type of radio is to open your dialer and dial *#*#4636#*#* then select 'Phone Information'.
Scroll to the bottom and find the "Set preferred network type" drop-down menu.
I'm not sure what it will be set on as I do not have 4G, but in that menu should be an option to select GSM only. This will force the phone, if only for a while, to drop the 4G connection.
Occasionally my HTC One X would get stuck on 2G and this usually solved it. Hope it helps you.

Okay, I will try it. Thank you.
But is that normal behavior? Does it often happen?
BTW, I'm on TrickDroid 4.0.0!

Bembel80 said:
Okay, I will try it. Thank you.
But is that normal behavior? Does it often happen?
BTW, I'm on TrickDroid 4.0.0!
Click to expand...
Click to collapse
It is certainly not normal behaviour as your phone should be shutting down data to make voice calls. (Unless they have changed something recently or 4G works differently to 3G). In any case it should definitely not be preventing you from making calls!
You may be best served searching in the Trickdroid forum thread to see if anybody has had similar problems. Does that ROM have a custom recommended kernel? I haven't been in the development threads much yet.
Another thing to try if nothing works is to either flash the ROM back over the top after a cache and dalvik wipe, or extract the boot.img from the ROM if it is custom and re-flash that with fastboot. Don't forget to fastboot erase cache after flashing the kernel and before rebooting.
Then either quickly try another rom (take a backup first) or request a replacement SIM card from your network provider. I have had two faulty SIM cards, and one of them was a micro SIM with my One X which played hell with which radio it would use. It's rare but it does happen.

wnp_79 said:
It is certainly not normal behaviour as your phone should be shutting down data to make voice calls. (Unless they have changed something recently or 4G works differently to 3G). In any case it should definitely not be preventing you from making calls!
You may be best served searching in the Trickdroid forum thread to see if anybody has had similar problems. Does that ROM have a custom recommended kernel? I haven't been in the development threads much yet.
Another thing to try if nothing works is to either flash the ROM back over the top after a cache and dalvik wipe, or extract the boot.img from the ROM if it is custom and re-flash that with fastboot. Don't forget to fastboot erase cache after flashing the kernel and before rebooting.
Then either quickly try another rom (take a backup first) or request a replacement SIM card from your network provider. I have had two faulty SIM cards, and one of them was a micro SIM with my One X which played hell with which radio it would use. It's rare but it does happen.
Click to expand...
Click to collapse
My wife has an S3 mini international version that we use here in CA on 3G/4G. If her phone is on 3G, then it won't make calls. She has to reboot it when that happens. For the moment she is living with it. I may have to put a custom ROM on there for her eventually. Evidently the 3G won't allow simultaneous voice and data, and her phone detects the data and refuses to call.
I realize it is a different device, but it sounds like a similar problem.

With the above mentioned key combination I can choose appropriate networks. When I use GSM only it works like expected. But I do not want to use that combination everytime to switch from LTE to GSM. Is there any other solution?

No solution for my problem?

Bembel80 said:
No solution for my problem?
Click to expand...
Click to collapse
Take a look at these 2g/3g toggles, maybe it will help:
https://play.google.com/store/search?q=2g+toggle

[Q] XT890 - Data Roaming Issue

Hi Folks,
I hope you can help me with a data roaming issue I am seeing on my RAZR i. I have data roaming disabled in the options.
There seems to be a lag of some kind, where the RAZR i will not recognize a cell/operator switch while in standby/locked mode.
I can reproduce the error everytime - I have the phone locked and connected to my bluetooth handsfree in the car - it will show my home network operator. I cross the border and drive to a point where I know 100%, that I have lost home operator connectivity. The BT handsfree will show my home network operator - data will be sucked in the background, since the phone believes it is still booked in under my home country operator.
I helped myself by setting my contract to explicitly activate roaming everytime by sending an SMS message - I am getting the notification SMS everyday, that data roaming has to be enabled, and I am now trying to consume data in a foreign country....
As soon as I press the power button and wake the phone up, the network operator will immediately switch to the foreign countries operator and data roaming activity will cease...
I have tried this well over hours already as well, to leave it in standby state, to see if it will eventually recognize the operater switch, but even after 6hrs at my workplace (50km away from the border) it was still showing my home countries operator.
This has happened to me on ICS 4.0.4 as well as JB 4.1.2 - I thought the update might resolve it.
I am stock JB Retail EU, unrooted (thanks Moto) and locked BL.
Anyone else observing this or able to reproduce the fault? I have opened a ticket with Motorola but their first "repair" attempt was to flash the latest firmware again, which did of course not resolve the error....
thanks a million for your time reading this and maybe offering some insight on what might be causing the issue.
cheers, Stefan

Out of curiosity, is this your first Android phone? And also do you have data to show that other Android phones switch instantly when crossing the border?
(Not trying to be rude, just that the expectation on that behavior might not be feasible and it is not the Phone's or Motorola's fault, I have no idea at the moment)

Omar-Avelar said:
Out of curiosity, is this your first Android phone? And also do you have data to show that other Android phones switch instantly when crossing the border?
(Not trying to be rude, just that the expectation on that behavior might not be feasible and it is not the Phone's or Motorola's fault, I have no idea at the moment)
Click to expand...
Click to collapse
Appreciate the quick response Omar, and no worries I don't see your question as rude. This is indeed my first Android phone, however - I think a fundamental function like Data Roaming should work immediately when the event is about to occur, since it can inccur significant cost..
When it is switched off, I expect the phone to not download data when it is on a foreign network, so I assume it would be an easy thing to "program" polling cell-information again before I start the download, no?

StefanGA said:
Appreciate the quick response Omar, and no worries I don't see your question as rude. This is indeed my first Android phone, however - I think a fundamental function like Data Roaming should work immediately when the event is about to occur, since it can inccur significant cost..
When it is switched off, I expect the phone to not download data when it is on a foreign network, so I assume it would be an easy thing to "program" polling cell-information again before I start the download, no?
Click to expand...
Click to collapse
Need to block international roaming - I live near Canadian border
Since we do have that option to select "Home Only", see if that makes a difference. I think that might even block the phone calls too .. but try it as a first approach.

Omar-Avelar said:
Since we do have that option to select "Home Only", see if that makes a difference. I think that might even block the phone calls too .. but try it as a first approach.
Click to expand...
Click to collapse
I am not sure where to find the "Home Only" option.. I looked through the data and phone menu - where is it located? Maybe it is not available on the "Retail" phones?

StefanGA said:
I am not sure where to find the "Home Only" option.. I looked through the data and phone menu - where is it located? Maybe it is not available on the "Retail" phones?
Click to expand...
Click to collapse
Oops, I couldn't find it ... maybe it was there on ICS? But you can also try under Network Operators try unchecking "Choose automatically".

There's an option for data roaming under Mobile Network settings, just uncheck it if it's enabled...

nick7722 said:
There's an option for data roaming under Mobile Network settings, just uncheck it if it's enabled...
Click to expand...
Click to collapse
This is what I have unchecked from the very beginning, but the issue is, that the phone is not obeying that setting.. thus the thread...
@Omar-Avelar, I don't have my Razr currently to check your suggestion with the operater selection - Motorola had me send the phone in another time, "to fix it" - so apparently they are admitting there is an issue in the way it is behaving.. I wonder if anyone else has the issue or it is just my phone - which would mean hope in terms of an "easily repairable hardware defect"...

Omar-Avelar said:
Oops, I couldn't find it ... maybe it was there on ICS? But you can also try under Network Operators try unchecking "Choose automatically".
Click to expand...
Click to collapse
Hi Omar, received my phone back yesterday - tried this morning and of course it is still not working.. I will try your suggestion of disabling the automatic network selection tomorrow morning on my way to work and see if that works.
What I did notice, is that I seem to have a different baseband version, than the official specs are suggesting:
according to this site:
http://pdadb.net/index.php?m=reposi...0_android_4.1.2_ota_system_upgrade_91.2.26001
the baseband is supposed to be:
SUNRISE_SMB_REV30_V2_R3_1233.C7_sec
however, my phone is showing:
SUNRISE_SMB_REV30_V2_R3_ENZO_1251.B_SEC
the name somehow smells custom made fishy to me - I am sure I never messed with this however. My girlfriends Razr i is showing the same version and I know she never ever touched it other than doing the OTA upgrade, so I wonder if there was a faulty OTA distributed at some point?
Could this be the culprit? If so, can I switch to the "correct" baseband without unlocking/rooting?
Really appreciate all your feedback and help so far.
cheers, Stefan

I'm in the UK with a retail UK firmware and the same baseband as yours.
Sent from my XT890 using xda app-developers app

kenrw7 said:
I'm in the UK with a retail UK firmware and the same baseband as yours.
Click to expand...
Click to collapse
Thanks for the feedback, do you have a chance to test, if you are having the same issues disabling roaming capabilities?

StefanGA said:
Thanks for the feedback, do you have a chance to test, if you are having the same issues disabling roaming capabilities?
Click to expand...
Click to collapse
I'm on Tescomobile (O2 provide the network) and have my data roaming off and the phone never locks onto another provider, as I understand the problem for you is when cross a country border which I don't (being an island and no borders) I'm due to go to vacation in South of France in 5 weeks and I'll check then whether my roaming switches on when I change to another provider there.
Have tried select another network (Orange) but cannot connect,
Hope I understood your problem.

kenrw7 said:
Hope I understood your problem.
Click to expand...
Click to collapse
yes, you got it exactly right. I have no issues within my country (Germany) either, phone stays on T-Mobile and never locks onto another network (O2, Base, etc..), it is like you said, when I switch to another countries roaming partner, the phone in standby mode still believes to be in the home network (T-Mobile).
Watch out in France then, although the issue might not be happening for you - assuming you fly in and switch off the phone. Once you reactivate the phone in the foreign country, it will be actively pulling and seeing the foreign operator I suppose.. In my case the phone switches countries in the background in standby, thus not actively searches/recognizes the change... at least this is my current theory that would match the behavior that I observe on an external hands free unit display...

Right I'll watch it when in France, might even make a working visit to Munich before then. I do know when I went to Hoogeveen in Jan I had a xperia go and that retained roaming off when on kpn.
Sent from my XT890 using xda app-developers app

Hi @Omar-Avelar,
I tried your suggestion this morning and disabled automatic network selection - guess what, I am observing a similar behavior.
The phone does in fact loose network connection at a point when the home network is no longer in reception, but the phone/hands free unit is NOT updated.. it keeps saying "Telekom.de" and shows 3 bars.. Even turning off the external bluetooth hands free unit and disconnecting the bluetooth link, then re.enabling the bluetooth link on the hands free, does NOT update the network operator status. You have to wake up the phone for it to realize it is disconnected from the network.... (good news obviously in the state of being disconnected from the network there is by the nature of design no possibility to retrieve data....)
My non-technical skills tell me, that the baseband is doing it's job of handling the network connections/operations properly, but when it comes to passing on the network piece to the "software/android side" this is where the disconnect is. Obviously the roaming setting is an android feature, that is not handled within the baseband, so if the phone/software doesn't know what's going on, it can't interact.
Any suggestions? fixable? did you take a look at my previous post on the baseband version?

kenrw7 said:
Right I'll watch it when in France, might even make a working visit to Munich before then. I do know when I went to Hoogeveen in Jan I had a xperia go and that retained roaming off when on kpn.
Click to expand...
Click to collapse
Hi there, how did your trip to France work out? Did you run into the roaming issue?

Hi @Omar-Avelar,
I think I made some progress - I believe the culprit is the intel deep sleep mode. When I interprete the sources correctly, the RAZR i enters deep sleep mode directly when going into standby/phone is locked/screen turned-off. To prove my theory, I installed "WakeMyAndroid" ( https://play.google.com/store/apps/details?id=com.gejos.android.wakemyandroidpro&hl=en ), the program is intended to prevent deep sleep mode and keep the phone in standby.. I set the timing to 9 sec and advanced invisible smart wakeup, as well as force wake if data lost - guess what, it works. Network operator switches and the phone immediately turns off data roaming.
Downturn of course is increased power consumption, since the phone never enters deep sleep. It brings me still over the day, so it is an acceptable workarround, I may play with the wake interval, too to increase usage, but I guess there should be a way to check network status in deep sleep mode, no? I am not a developer, so I don´t know what would need to be done, but shouldn´t it be able to poll network status in deep sleep every couple of seconds? Or rather a baseband function to "invisible wake" the phone when network operator changes?
Hope you or anyone else reading this, can help me. Appreciate your time.
cheers, Stefan

Hi @StefanGA do you have any tips or update on the issue?
In my country we pay data traffic by just roaming with another operator (within the same country). Because the signal of my current operator isn't always good, the roaming happen often, resulting in a lot of additional 0,01€ - 0,03€ that pile up.
Thanks

Sorry, Motorola admitted, they have no solution to the problem - I.e. No interest to invest time to research it.. I returned my RAZR i and exchanged it for a RAZR HD.
Sent from my XT925 using Tapatalk

[Q] Problem with data after installing stock JB 4.1.2 EU

Hello, everyone! :laugh:
I'm new on this forums but I want to contribute as much as posible. In this moment I have a question, though; my RAZRi was filled with bloatware from Telcel (my operator in Mexico), so I decided to install a retail stock ROM, specificaly that labeled EU (I also tried with the GB one).
Apparently everything was fine, I even installed the CWM and rooted my phone, but I started to notice that my 3G and HSPA data weren't working. The phone showed the 3G and H+ letters in blue and apparently I had internet, but data is not received at all; the up arrow blinked from time to time but that's it. My WiFi and GPS work as charm.
I'm trying to figure this out because my girlfriend lives in another state and whatsapp is our only link while we're on the street.
Has anyone have the same problem using a stock room from a different country than yours? I'm thinking that it might be a problem with my operator's network because my internet comes back from time to time, but believe me, it's more the time that I don't have internet than the time I do have it, call it a 95 off - 5 on. It's been two days like this and I can't find a solution.
Thank you very much for your help.

Hey Richie,
do you checked the APN ?

HeyRichie said:
Hello, everyone! :laugh:
I'm new on this forums but I want to contribute as much as posible. In this moment I have a question, though; my RAZRi was filled with bloatware from Telcel (my operator in Mexico), so I decided to install a retail stock ROM, specificaly that labeled EU (I also tried with the GB one).
Apparently everything was fine, I even installed the CWM and rooted my phone, but I started to notice that my 3G and HSPA data weren't working. The phone showed the 3G and H+ letters in blue and apparently I had internet, but data is not received at all; the up arrow blinked from time to time but that's it. My WiFi and GPS work as charm.
I'm trying to figure this out because my girlfriend lives in another state and whatsapp is our only link while we're on the street.
Has anyone have the same problem using a stock room from a different country than yours? I'm thinking that it might be a problem with my operator's network because my internet comes back from time to time, but believe me, it's more the time that I don't have internet than the time I do have it, call it a 95 off - 5 on. It's been two days like this and I can't find a solution.
Thank you very much for your help.
Click to expand...
Click to collapse
Im from mexico too , i have the Omars Rom and before that the french version of Jb, never had this issue
What about chek the apn config?
Intel device - Razr i Owner
Hit thanks if i help you or you like my style

APN checked
Marco Lomas said:
Im from mexico too , i have the Omars Rom and before that the french version of Jb, never had this issue
What about chek the apn config?
Intel device - Razr i Owner
Hit thanks if i help you or you like my style
Click to expand...
Click to collapse
I have checked them, I even set the APN settings manually but it gave me the same result. What part of Mexico are you in, Marco? Do you know if there's any problem with Telcel network in Mexico City?
Thanks :fingers-crossed:

Can you change the Network Mode to GSM only for testing
Sent from my Razr i using Tapatalk 2

Bananen said:
Can you try the Network Mode to GSM only for testing
Sent from my Razr i using Tapatalk 2
Click to expand...
Click to collapse
Sure. Well, I have two options under 'Select Network': Automatic and 2G only, Automatic is selected by default. Should I choose 2G?

Yes
Gesendet von meinem LT18i mit Tapatalk 2

Done
It works! And actually I went back to my original stock ROM, just to make sure, and the same thing happens when on 3G/HSPA, no data, but on GSM everything works fine.
I guess that means it's my operator's network, isn't it? I'll have to call and ask them if there's a problem in my area; it's a shame because, in the meantime, I'll have to stay on 2G just to keep my internet working ):
I hope Telcel fix it soon. Thank you very much! :victory:

HeyRichie said:
It works! And actually I went back to my original stock ROM, just to make sure, and the same thing happens when on 3G/HSPA, no data, but on GSM everything works fine.
I guess that means it's my operator's network, isn't it? I'll have to call and ask them if there's a problem in my area; it's a shame because, in the meantime, I'll have to stay on 2G just to keep my internet working ):
I hope Telcel fix it soon. Thank you very much! :victory:
Click to expand...
Click to collapse
Yeah maybe its a telcel problem, im on Monterrey, Nuevo Leon. And here i havent any issue i have hdspa/hdspa+/3g/2g working
I never has to change my apn, on every custom rom or homemade fastboot it already install it
Intel device - Razr i Owner
Hit thanks if i help you or you like my style

I'm going bonkers! I'll pay you 50 dollars to fix me!

I have a Note 4 Sm N910L from Korea. I live here in Japan at the moment. I bought the phone properly over Amazon and its new. I bought a data sim for it and it was working perfectly for about 7 weeks then one morning when I woke up there was no signal I have tried everything - updated from 444 to 501 then downgraded again UP and DOwn Maaany times. If I go near the Docomo store I can get connected again and it will stay connected for the 3km back to my home and then go off again when I reach home and not go back on - so I know the hardware still works ( I guess). It now just continually says Limited service or "your card is not authorised to use this network". Ive tried many other sims in the phone, none work.
If you can give me a step by step COMPLETE guide with links to any files I need to fix it, I'll pop 50 dollars in a paypal account the same day I can make my first skype call again!!! First person's info that actually does the job gets the money.
Love my phone and Im absolutely &%$'ed without it.
Hope you can help (the wife is out buying some rope and a straight-jacket as I type)

kazbluesk1 said:
I have a Note 4 Sm N910L from Korea. I live here in Japan at the moment. I bought the phone properly over Amazon and its new. I bought a data sim for it and it was working perfectly for about 7 weeks then one morning when I woke up there was no signal I have tried everything - updated from 444 to 501 then downgraded again UP and DOwn Maaany times. If I go near the Docomo store I can get connected again and it will stay connected for the 3km back to my home and then go off again when I reach home and not go back on - so I know the hardware still works ( I guess). It now just continually says Limited service or "your card is not authorised to use this network". Ive tried many other sims in the phone, none work.
If you can give me a step by step COMPLETE guide with links to any files I need to fix it, I'll pop 50 dollars in a paypal account the same day I can make my first skype call again!!! First person's info that actually does the job gets the money.
Love my phone and Im absolutely &%$'ed without it.
Hope you can help (the wife is out buying some rope and a straight-jacket as I type)
Click to expand...
Click to collapse
I loved the way you exposed your problem. I don't come here with a fix but only with few suggestions (so I don't deserve the 50 bucks) :
- check the pins of the sim slot
- check the back screws also and tighten them a little bit
- in network settings try to manually set provider and also choose only one mode (no auto 2g/3g/lte) preferably 2g only
Envoyé de mon SM-N910C en utilisant Tapatalk

It has happened to me with another phone. Turns out my SIM had failed, so it needed to be replaced. Sometimes it happens and it's quite easy to get a new one, so that would be the first thing I'd do if I were you. I hope you fix the problem soon!

Thanks but I tried the sim contacts I didnt notice any screws loose (except my own of course) I'll check (though not hopeful). I appreciate any suggestions.

iridaki said:
It has happened to me with another phone. Turns out my SIM had failed, so it needed to be replaced. Sometimes it happens and it's quite easy to get a new one, so that would be the first thing I'd do if I were you. I hope you fix the problem soon!
Click to expand...
Click to collapse
Iridaki, thank you. I ve tried 4 other sims from my provider in it and they dont want to work either. I feel it is more a software problem as it was alright when i went to sleep one night and the totally banjacked when i woke up in the morning. Im not sure though, just a noob at all this. Thank you for trying to help though.

googy_anas said:
I loved the way you exposed your problem. I don't come here with a fix but only with few suggestions (so I don't deserve the 50 bucks) :
- check the pins of the sim slot
- check the back screws also and tighten them a little bit
- in network settings try to manually set provider and also choose only one mode (no auto 2g/3g/lte) preferably 2g only
Envoyé de mon SM-N910C en utilisant Tapatalk
Click to expand...
Click to collapse
I just looked at my settings and i am unable to find any page where I can choose 2g or 3g or 4. When I rooted the phone a few days ago I remember downloading phone info which let me choose but that made no difference. Now my phone is unrooted again.
Thank you though googy

kazbluesk1 said:
Iridaki, thank you. I ve tried 4 other sims from my provider in it and they dont want to work either. I feel it is more a software problem as it was alright when i went to sleep one night and the totally banjacked when i woke up in the morning. Im not sure though, just a noob at all this. Thank you for trying to help though.
Click to expand...
Click to collapse
Ah I see.
I think I know what's going on.
The N910L supports the following frequencies: GSM 900/1800/1900, UMTS 850/1900/2100 and LTE Band 1, 3, 5, 7.
Docomo don't use GSM at all, instead they use UMTS 800/1700/2100 and LTE Band 1, 9, 19, 21, 28.
Basically your phone is not designed for the Japanese market, as it only supports two of the eight frequencies used by Docomo. The reason you had signal and still have around their store is probably because there's a tower that supports the UMTS 2100 or LTE Band 1 frequency. So you either moved recently or perhaps you didn't but one of the nearby towers was switched to a different, unsupported by your phone, frequency.

kazbluesk1 said:
I just looked at my settings and i am unable to find any page where I can choose 2g or 3g or 4. When I rooted the phone a few days ago I remember downloading phone info which let me choose but that made no difference. Now my phone is unrooted again.
Thank you though googy
Click to expand...
Click to collapse
In network settings , there should be a submenu where you can change it. You can also directly access it with long press on data connection icon in notification drawer
Envoyé de mon SM-N910C en utilisant Tapatalk

Service mode
try this code in the dialer *#0011# whenever you have signal it helps you to identify which band you are connected with
After that you can buy a signal repeater that support that band and bring signal to your home since its not that far distance 3km from docomo store : )

are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:

iridaki said:
Ah I see.
I think I know what's going on.
The N910L supports the following frequencies: GSM 900/1800/1900, UMTS 850/1900/2100 and LTE Band 1, 3, 5, 7.
Docomo don't use GSM at all, instead they use UMTS 800/1700/2100 and LTE Band 1, 9, 19, 21, 28.
Basically your phone is not designed for the Japanese market, as it only supports two of the eight frequencies used by Docomo. The reason you had signal and still have around their store is probably because there's a tower that supports the UMTS 2100 or LTE Band 1 frequency. So you either moved recently or perhaps you didn't but one of the nearby towers was switched to a different, unsupported by your phone, frequency.
Click to expand...
Click to collapse
Ive not moved recently, and my childrens phones on the same sim plan and provider works perfectly. Also no matter where I go I never get signal - except right outside doccomo shop. BUT phone worked perfectly for 7 weeks before with great signal. Something has changed regarding my phone I think. Maybe my phone got changed to different settings over the air or something.
Thank you

googy_anas said:
In network settings , there should be a submenu where you can change it. You can also directly access it with long press on data connection icon in notification drawer
Envoyé de mon SM-N910C en utilisant Tapatalk
Click to expand...
Click to collapse
When I long press I get a tick box for allowing a Data network and the Just access point settings tab. No tab for choosing 2g 3g 4g LTE etc.
Thanks

azizski said:
try this code in the dialer *#0011# whenever you have signal it helps you to identify which band you are connected with
After that you can buy a signal repeater that support that band and bring signal to your home since its not that far distance 3km from docomo store : )
Click to expand...
Click to collapse
Hello Azizski, I checked *#0011# and the top one says DLCH 10736 ULCH 9786
the other seemingly relavent lines say
MM Cause 0 IDLE/DISCONNECTED-SERVICE
GMM Cause 0 DEREGISTERED/LIMIT
RCC DISCONN RSSI/TX 89/0
Whatever that all means.
Thank you for your help.

are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:

devilxvergil said:
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
Click to expand...
Click to collapse
Hi, I've input the settings maybe a hundred times now - I can do it from memory almost with my eyes shut . The settings are the same as what workedfor 7 weeks. The guy at the counter of my provider input them too - they dont work anymore.. There is only one access point that used to work.
iijmio
iijmio.jp
[email protected]
iij
chap or pap
Thanks for your help. I stlll feel the problem is something software or update based, maybe the modem has been changed somehow. Or another setting deep inside the phone.
Does flashing an update also flash a new modem and baseband?

devilxvergil said:
are you on 5.0.1 ?
some suggestions for you.
settings>mobile networks, there should be the preferred network type
check your access point names again, or try adding again, sending a message to provider would probably give u the settings. :fingers-crossed:
Click to expand...
Click to collapse
Hi Yup Im on 501. Was on the phone to them 3 times last week - last time for 2 hours - nothing they say seems to work.
Thank you for your help though.

Why you dont try flashing kitkat or first lolipop u get whit odin?
Install from Play Store ☆Phone info☆Samsung and check your CSC code than go to sammmobil and download right FW...flash whit ODIN and u will be see...
*Oh sorry u allready tried that... Maybe to flash different modem?

kazbluesk1 said:
my childrens phones on the same sim plan and provider works perfectly.
Click to expand...
Click to collapse
And, just to clarify, your children have Note 4 phones, with the exact same model number (N910L)?

Jovan1997 said:
Why you dont try flashing kitkat or first lolipop u get whit odin?
Install from Play Store ☆Phone info☆Samsung and check your CSC code than go to sammmobil and download right FW...flash whit ODIN and u will be see...
*Oh sorry u allready tried that... Maybe to flash different modem?
Click to expand...
Click to collapse
Hi, Yes, I want to try to flash a new modem but Im not sure about the procedure and exactly which files I need. I have tried to flash a few modems via ZOdin but I keep getting a nand write fail. Im a noob at this and am obviously doing something wrong. If you can tell me exactly how to do it I'd be very greatful.
Ian

iridaki said:
And, just to clarify, your children have Note 4 phones, with the exact same model number (N910L)?
Click to expand...
Click to collapse
Hi Iridaki,
Nope they have 2 old iphone 4 s' using the same data sim as me. (iijmio ((basically docomo)) ). Sorry about not being clear about that.

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.
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.