Database Users

[Q] uk mz601 xoom 3g connection failure

Hey guys, I'm totally confused what's wrong with my xoom mobile connection. The sim card and 3g work fine when I put the sim into my htc cell, however on the tablet it refuses to work despite the dynamic tray indication (3g changes to hsdpa or to edge, even the up- and download arrows appear), though the indicator color is gray like it doesnt work. I have no idea what's wrong, I tried all the mobile connection settings, still nothing seems to get better. The problem appeared several days after my xoom was updated to official 3.1 (not rooted btw).
It worked fine before and after the update. I rebooted the xoom like 10 times, still no effect, same for factory reseting the xoom twice. In addition, the device network info shows that IP address is unknown.
What can I do to fix the connection? I'd appreciate any help.

seriously guys, no ideas?

I have a similar issue with my Optus MZ601 where it starts H data and then suddenly drops out, ending with the modem seemingly rebooting... Not sure whether this is my coverage in Aus, or whether there are other issues. I tend to suspect "Fast Dormancy" is on and playing a part in all of this, however with out a dialer, there's no way I can do the *#9900# to get into the menu and turn it off to test my theory.

Same problem
I'm having the same issues, It started a few days ago. Updated to 3.1 about a month ago with no problems.
Now I can't connect with 3G. Wifi works fine. tried everything from soft resets to full recovery. My xoom recognizes the sim and shows data connectivity but still can't connect.
Is there a problem with the update?

wow finally I'm not the only one with such problem.
did you guys reinstalled the stock 3.0.1 image? cause that's what I'm intending to do now. the only thing that stops me so far is that I'm not completely sure whether it will void my warranty or not.
I just don't want to find myself with a crippled xoom which moto refuses to take back >_>

[Q] Proplem with all 2.3 based roms

Hello. I have been using void until now. Sometime ago I tested Oxygen. I immedietly noticed a problem with connections. The phone had to be in roaming mode to get any connections at all. Even then I was only able to call and send txt but no internet was available.
So I switched back to void which worked like a charm.
Today I suddenly got the urge to try something new again. So I installed MIUI. The same problem exist with it as it did with oxygen. No internet connection what so ever. After furiously messing with the roaming mode button and a couple of restart the internet connection suddenly came to life. But it is extremely slow and it suddenly disconnects from time to time.
I have a model bought from finland and it was originally with saunalahti version of 135. Any help on how to continue using 2.3 based roms would surely be appriciated.

This is not rom problem. I used all roms and never ever had ANY of problems. ANY.

nioman said:
Hello. I have been using void until now. Sometime ago I tested Oxygen. I immedietly noticed a problem with connections. The phone had to be in roaming mode to get any connections at all. Even then I was only able to call and send txt but no internet was available.
So I switched back to void which worked like a charm.
Today I suddenly got the urge to try something new again. So I installed MIUI. The same problem exist with it as it did with oxygen. No internet connection what so ever. After furiously messing with the roaming mode button and a couple of restart the internet connection suddenly came to life. But it is extremely slow and it suddenly disconnects from time to time.
I have a model bought from finland and it was originally with saunalahti version of 135. Any help on how to continue using 2.3 based roms would surely be appriciated.
Click to expand...
Click to collapse
Let me clarify this once and for all. Android is a slightly different OS, it uses something called middleware, which acts like a bridge between the hardware and the drivers on each Rom.
Now going back to your B135, which is very old btw, you need to upgrade the Stock Rom to at least B137, which will upgrade your AMSS file. This way the Wifi/3G/screen/sensors modules get updated firmware and that should fix your connectivity problems with 2.3 drivers.

Saunalahti is MVNO and it roams on Elisas network so it's normal that you need to enable roaming. Stock ROM has modified RILs or something so that they recognise Elisas network as Saunalahtis and then you don't need to enable roaming. I tried getting those RIL work with Oxygen but those didn't fix it. Cyanogenmod has settings so you don't need to roam. (atleast you can get rid of that roaming symbol)
I don't understand why it works with Void and FLB, maybe those are based on some other MVNO's stock rom idk. Or does it work as it should on every Froyo ROM? Haven't tried other ones and really cba.
You can just enable roaming, you won't get any fees for that as long as you roam on finnish networks. (and it just roams on Elisa afaik)

nioman said:
Hello. I have been using void until now. Sometime ago I tested Oxygen. I immedietly noticed a problem with connections. The phone had to be in roaming mode to get any connections at all. Even then I was only able to call and send txt but no internet was available.
So I switched back to void which worked like a charm.
Today I suddenly got the urge to try something new again. So I installed MIUI. The same problem exist with it as it did with oxygen. No internet connection what so ever. After furiously messing with the roaming mode button and a couple of restart the internet connection suddenly came to life. But it is extremely slow and it suddenly disconnects from time to time.
I have a model bought from finland and it was originally with saunalahti version of 135. Any help on how to continue using 2.3 based roms would surely be appriciated.
Click to expand...
Click to collapse
This is a well know problem. As you know, Saunalahti runs on Elisa's network and when using 2.3 roms, operator is identified as Elisa, thus making the phone think that its roaming.
Some have tried fixin this, but nothing yet.
There is no harm enabling data roaming (international data roaming can be disabled from oma.saunalahti). Or by using CM7 which has an option for "national data roaming". That also removes the roaming icon...

sorry a lil OOT,
how about other features like usb tethering on 2.3.x?i see all gingerbread roms for huawei ideos x5 have issue on these.
is there any solution/workaround for usb tethering?
thanks

[Q] Help with data and GSM losses of connection

I own a Verizon Motorola Razr M, bought in ebay to an US seller. I am in Spain and I use Movistar SIM card
The phone came with stock JB 4.1.2, and therefore I could not unlock the bootloader.
I started using it, but it had a problem that I am not been able to solve so far: after some hours of use, with no problems with GSM and data connections, it suddenly looses both connections, although the signals on the status bar still appear. I take care that signals have gone when I take the phone to make a call or surf the web.
I have tried the following procedures:
Change the net settings to GSM/UMTS
I rooted the phone with motochopper 1.1.2 exploit
I installed Safestrap 3.12 in order to be able to install other available locked compatible roms.
I tried these roms, following this thread here in XDA: Clean ROM 1.0. Clean ROM 1.1, Barebone New Base, Stock Deodexed.SDswap-Locked & UnLocked BLs-xt907-9.8.1Q-94-1, but no luck. This last one uses the last radio, but no way.
I also installed the [PATCH][GUIDE] Patch to fully enable GSM on Verizon CDMA Android phones. I could only install it on Clean ROM 1.1 however. It has been impossible to install it on the other ROMS. In any case, no luck again with the patch installed. Here I had a big problem because as I still had these problems, I got into *#*#4636#*#* in the dialer, and touched the band selection option: suddenly, the net showed no signal more and I was unable to make it work again: I finally solved this by installing the stock firmware from here with RSD lite.
No way. I still have this problem and I can not use the phone. I have also tried with another SIM card, but the problem remains. It is a shame because when the connection works, the phone runs very well.
Any help would be very appreciated

More details
errotaxar said:
I own a Verizon Motorola Razr M, bought in ebay to an US seller. I am in Spain and I use Movistar SIM card
The phone came with stock JB 4.1.2, and therefore I could not unlock the bootloader.
I started using it, but it had a problem that I am not been able to solve so far: after some hours of use, with no problems with GSM and data connections, it suddenly looses both connections, although the signals on the status bar still appear. I take care that signals have gone when I take the phone to make a call or surf the web.
I have tried the following procedures:
Change the net settings to GSM/UMTS
I rooted the phone with motochopper 1.1.2 exploit
I installed Safestrap 3.12 in order to be able to install other available locked compatible roms.
I tried these roms, following this thread here in XDA: Clean ROM 1.0. Clean ROM 1.1, Barebone New Base, Stock Deodexed.SDswap-Locked & UnLocked BLs-xt907-9.8.1Q-94-1, but no luck. This last one uses the last radio, but no way.
I also installed the [PATCH][GUIDE] Patch to fully enable GSM on Verizon CDMA Android phones. I could only install it on Clean ROM 1.1 however. It has been impossible to install it on the other ROMS. In any case, no luck again with the patch installed. Here I had a big problem because as I still had these problems, I got into *#*#4636#*#* in the dialer, and touched the band selection option: suddenly, the net showed no signal more and I was unable to make it work again: I finally solved this by installing the stock firmware from here with RSD lite.
No way. I still have this problem and I can not use the phone. I have also tried with another SIM card, but the problem remains. It is a shame because when the connection works, the phone runs very well.
Any help would be very appreciated
Click to expand...
Click to collapse
The problem also seems to become worse with the use of the phone: at the beginning, coming from a factory reset, It can last some hours before the problem occurs. But since it happens from the first time, it happens more and more frequently and the phone can not be used any more. It seems that there could be a software issue.

Another try disabling fast dormancy
I´ve just disabled fast dormancy, because my operator Movistar apparently does not use this technology.
For this, I have modified 3 lines from build.prop system file, as indicated in another site.
The 3 lines are:
ro.mot.ds.fastdormancy.disable=true
telephony.lteOnCdmaDevice=0
ro.telephony.default_network=3
Having fast dormancy enabled when your operator does not support it, seems to drain battery, and could cause other problems. That´s why I´ve done this. I have used root explorer apk from Google store, it is free and it automatically creates a backup of build.prop file when you modify it.
I keep the fingers crossed, let´s see what happens.

Fast dormancy: yes but...
After some days using the phone with fast dormancy disabled (for this, I also added this line to build.prop: ro.ril.fast.dormancy.rule=0 ; I read this for ICS Roms, I do not know if this command is also valid for JB, any comment will be welcome), I still get some cuts (less I would say), but at least the phone tries to restart the connections. For this, I have also installed the apk from Google Play called 3g reconnect.
In any case, any comment would be appreciated.

Issue not solved
I still get data and voice disconnections when I use GSM/UMTS or only UMTS modes. They occur ransomly, and they also occur as soon as I use a WIFI connection. I can only use the phone on GSM only mode, which is frustrating.
Any advise?

errotaxar said:
I still get data and voice disconnections when I use GSM/UMTS or only UMTS modes. They occur ransomly, and they also occur as soon as I use a WIFI connection. I can only use the phone on GSM only mode, which is frustrating.
Any advise?
Click to expand...
Click to collapse
I do not go near *#*#4636#*#* anymore. So tell me do you use that to make these changes (phone info is the app name).

Choosing GSM/UMTS or GSM only
aviwdoowks said:
I do not go near *#*#4636#*#* anymore. So tell me do you use that to make these changes (phone info is the app name).
Click to expand...
Click to collapse
Hello,
I have tried both: using *#*#4636#*#* or using the usual phone settings. Sometimes I have also checked that the changes made with the usual settings appeared also dialing *#*#4636#*#*.
Yesterday evening, I tried selecting global mode instead of GSM/UMTS and it seemed to work for some hours, but today morming, the problem occured again. So far, the unique way I have found to avoid connection cuts off is using GSM ONLY mode. I have to say that I have tried with 2 different SIM cards but the result is identical.

errotaxar said:
.
Click to expand...
Click to collapse
Did you select the 3 dot menu & mess with the "band" settings?
---------- Post added at 07:08 AM ---------- Previous post was at 06:56 AM ----------
http://forum.xda-developers.com/showthread.php?t=2346623

I did that once, and all the signals disappeared. I restored the phone with RSD Lite, that appeared to be the unique way to have again signals working. Now I do not even dare touching these 3 dots.

errotaxar said:
I did that once, and all the signals disappeared. I restored the phone with RSD Lite, that appeared to be the unique way to have again signals working. Now I do not even dare touching these 3 dots.
Click to expand...
Click to collapse
What booby a trap? How many step into!

I don´t know if I am understanding you. I did that once because I did not know what else should I do to solve the problem. I saw that there was the possibility to choose theoritically between US bands and Cellular, and I entered in that menu. It is not so stupid to try that if you have already tried 100 other ways.
In any case, anybody has an idea about how to solve this problem? I´m sure I am not the unique person having this issue with this phone.

errotaxar said:
I don´t know if I am understanding you. I did that once because I did not know what else should I do to solve the problem. I saw that there was the possibility to choose theoritically between US bands and Cellular, and I entered in that menu. It is not so stupid to try that if you have already tried 100 other ways.
In any case, anybody has an idea about how to solve this problem? I´m sure I am not the unique person having this issue with this phone.
Click to expand...
Click to collapse
You are saying the problem is now still there. Yet the radio partition is fixed. Please restate what has been fixed with the rsd flash & what remains unfixed.

Well I think I have fixed and solved the problem: I initially copied the APN settings I had with my previous HTC Sensation, because the phone operator was the same (MOVISTAR), the SIM card too, and I have not moved. In these APN settings, the proxy was "undefined" as well as the proxy gate. I wonder if the radio stucks looking for a proxy each time or whatever. I tried yesterday with completely different APN settings, with a concrete Proxy and a gate... and now I have not had any issue in the past 24 hours. I will still wait a couple of days to see if that was finally the reason.
Which in any case would be silly, because I just applied what was working OK with my sensation, but...

New APN settings: let´s see
Well I think I have fixed and solved the problem: I initially copied the APN settings I had with my previous HTC Sensation, because the phone operator was the same (MOVISTAR), the SIM card too, and I have not moved. In these APN settings, the proxy was "undefined" as well as the proxy gate. I wonder if the radio stucks looking for a proxy each time or whatever. I tried yesterday with completely different APN settings, with a concrete Proxy and a gate... and now I have not had any issue in the past 24 hours. I will still wait a couple of days to see if that was finally the reason.
Which in any case would be silly, because I just applied what was working OK with my sensation, but...

After several days, the problem is still there. After setting new values in APN, it happens less often, but it still happens. I have to switch to GSM only mode.
2 days ago, I was surfing the net at quite high speed with no interruptions, for half an hour. I then shutted off the screen, on again some seconds later, and the connection was blocked, I had to restart the phone. It has to be a software issue.

I finally sold the phone
After concluding that I could never get rid of this problem, I sold the phone, informing that he would have to use mainly GSM only connection. Great phone otherwise, but with this issue.

This sounds like a Baseband Issue.
Europe I have found baseband:
sm_bp_101031.027.32.81P to be the most stable so far, with no H+ support though.
But most Carriers in Europe don't have H+ or LTE.
That baseband is part of build 9.8.1Q-66
Which can be all downloaded here:
http://sbf.droid-developers.org/phone.php?device=8
The baseband from 98.16.1 had H+ support in Europe but connections dropped like crazy.
Same with 98.12.4, we remedied that with Aussie Radio at the time.
Maybe this may help some International users with Data and GSM Loss

Germanese said:
This sounds like a Baseband Issue.
Europe I have found baseband:
sm_bp_101031.027.32.81P to be the most stable so far, with no H+ support though.
But most Carriers in Europe don't have H+ or LTE.
That baseband is part of build 9.8.1Q-66
Which can be all downloaded here:
http://sbf.droid-developers.org/phone.php?device=8
The baseband from 98.16.1 had H+ support in Europe but connections dropped like crazy.
Same with 98.12.4, we remedied that with Aussie Radio at the time.
Maybe this may help some International users with Data and GSM Loss
Click to expand...
Click to collapse
I'm on 9.8.1Q-94-1(98.30.1.XT907.Verizon.en.US) and wanna use it in Germany. any experiences with the radio compared to the suggested one. Or is there another way to boost the performance of the razr m? Compared to my razr I the signal and data quality is really poor...
edit: my baseband-version is: SM_BP_101032.021.32.80P
edit2: ok... now i've flashed several basebands... and the behaviour of the phone is always the same... with the australian baseband of xt905 it wasn't possible to get an hspa-connection. dunno if its enough just to flash the radio-fw?!?!?
so is there an other way to get more stability in my region? i tried to flash the radio from razr hd retail germany. but i think the razr m don't like it when I fool around. actually I love the mobile, so i don't want to make it angry... your suggestions are very much appreciated...

Data Connection problem (4g) (weird issue)

Hi,
I recently updated my phone to android 4.4.2. (official firmware KOT49.I9505XXUFNB9)
All went well, wifi works like it should, sms is good and calls too.
The problem i have is that my data connection (4g) is acting weird.
When i want to use my own connection on my phone like for Google play, facebook, games, web surfing, speedtest, ...., It all goes slow or does not connect at all.
But when i share this connection through USB and/or wifi hotspot there are no problems. Smooth as butter. No latency issues, timeouts, just as a 4G connection should be.
Thank you for helping and reading :good:

Thx for the 'help'.
Some news :
- Mobile connection goes from 4 bars to 1 if i switch from (WCDMA/GSM) to (LTE/WCDMA/GSM)
- Modem is good (flashed a few times, even other modem versions, but nothing works)
- I have a realy hard time to connect to any data network atm (3g and 4g).
- Modem and firmware version are the same as friends of mine (same country and provider) (Belgium, Mobistar)
- i had 4.2.2 before. Wanted to reinstall the firmware to get it all official again but the firmware was nowhere to be downloaded so i took a 4.4.2 and now everything is messed up.
The realy weird thing is that the data connection was the best at the standard 4.2.2 that was on the phone. Every other rom that i tried had a worse connection. (i tried ALOT of roms).

Dial *#1234# and attach screenshot.

Here you go.
Just attached a 2nd img from Samsung kies. Says (ORX). DOn't know what country that is, and i don't know what country code i sohuld take since belgium doesn't have its own code it seems. (Could this be the problem?)

[Q] Mobile data problem

I've got some problems with mobile data on my Note 4. I've bought unbranded phone in shop unrelated to any mobile provider. It's Snapdragon version (N910F).
I've got prepaid service, without LTE available (if that's important). The problem is that every now and then mobile data simply stops. There is still H or H+ sign in notification bar, and upload arrow blinks. but when i try to open web page or send message through viber, wattsup it acts like there is no network. Then i have to wait for about 30 seconds or manually turn mobile data off and then on again for internet to start working again.
I've tried changing APN settings, changing network type, but the problem is still there.
I've read some similar issues with Note 3 and SGS5 users, and some problems with modem versions, but i couldn't find anything from note 4 users
And this problem is very frustrating on phone like Note 4
Is there anything else i could try?

Mate i have exact same problem

I don't know if this is relevant, if your apn settings has a proxy and port values, try to delete it and let the proxy and port be blank. I had issues previously with data getting stuck while using proxy setting.
Sent from my SM-N910C using Tapatalk

I also loose data signal and on calls people cant hear me properly.. doesny always happen. Ill try thanks

Also experiencing this with Tmobile UK.

Also have this exact same problem with the unbranded SM-N910H, H+ but no internet all of a sudden. I also sometimes lose the whole signal (Emergency Calls Only) so I have to reboot or turn airplane mode off and on to get it working again. I asked some people and they told me it's a coverage problem with the network provider. IDK if it's true.

No ahmadmob its the phone although i have n910u i have exact same problems as u!! I thinks its modem hopefully gets solved soon im in Australia using prepaid only 3g/h+

Ausboy 2011 said:
No ahmadmob its the phone although i have n910u i have exact same problems as u!! I thinks its modem hopefully gets solved soon im in Australia using prepaid only 3g/h+
Click to expand...
Click to collapse
Glad it's not a carrier specific issue.
Guess I'll wait for an official fix or for other radios to become available.

I rang samsung australia few weeks ago and they had no idea than again when do they ever!? Lol so looks like we will have to wait buddy

Some common suggestions:
1- Swap the SIM card into another phone to see if the problem persists?
2- If the problem is due to Note 4, you may need to update your firmware/baseband to the latest one (if one is available, or you have to wait until Samsung release it), or try another firmware (from another model) or custom ROM.

Tried already mate sims fine updated reflashed stock rom and still same problem.. hopedully update comes soon

I just tried sim card from another carrier, and for now, everything looks fine.
I'll go ask for a new sim from my carrier, or switch my number to another one.

Sorry for digging, didn't want to make a new topic.
I'm here with the same problem. Did any of you find solution for it (other than switching to different carrier). I'm on Play in Poland and i find mobile data problematic mostly in roaming (free roaming with every carrier in Poland). For example on t-mobile or plus i find my up arrow constatnly blinking and H switching to H+ and again. Problem is even worse with 2 or less signal bars. I'm thinking of changing sim cars to new one, but on my note 2 everything works perfectly fine.

I thought I noticed a slight improvement after the final KitKat update, may have been a placebo effect though.
In general it's still bad, much worse than my HTC M7, same network, same location etc. It seems to be particularly bad when travelling at speed e.g. on the train I get full bars but only 1 arrow flickering.
Upgraded to Lollipop a couple of days ago and finally rooted, doubt this will make a difference but will be able to report during my commute tomorrow.
In summary: The HSDPA modem on my phone is rubbish.
P.S. Previous phones I've owned came with options for different modems, I'd often flash these to improve performance, where are they for the Note 4?

I think they're not available yet, at least on lollipop...

Mine is completely fixed after a few updates i get 4g+ here excellent reception

Medved77 said:
I thought I noticed a slight improvement after the final KitKat update, may have been a placebo effect though.
In general it's still bad, much worse than my HTC M7, same network, same location etc. It seems to be particularly bad when travelling at speed e.g. on the train I get full bars but only 1 arrow flickering.
Upgraded to Lollipop a couple of days ago and finally rooted, doubt this will make a difference but will be able to report during my commute tomorrow.
In summary: The HSDPA modem on my phone is rubbish.
P.S. Previous phones I've owned came with options for different modems, I'd often flash these to improve performance, where are they for the Note 4?
Click to expand...
Click to collapse
Nope. No Change.

Ausboy 2011 said:
Mine is completely fixed after a few updates i get 4g+ here excellent reception
Click to expand...
Click to collapse
Could tell more how did you fix your problem?

All fixed!
I can confirm that after the lollipop 5.0.1 update on my SM-N910H all my mobile data problems/mobile network drop outs are solved!. 3 days without any problems now.
Edit: maybe it had something to do with Radio and it got fixed after it got updated along with the lollipop update package?

Guys, here in my country Bulgaria, many of us owners of SGN4 have the same issue and wilth Lollipop also. I have noticed that with KitKat the problem was more frequent than Lollipop but it is still there. We have tried Polish Lollipop and now the official Bulgarian Lollipop but the problem still exists. I hope somebody will tell me which ROM you have installed (oficial) so I could share it with my fellow citizens. Thank!