Database Users

Network and GPS Functionality Vanished

Hi all,
I flashed my phone, and thought I’d go with Darky's Raw Steel Edition (4.1), which is awesome btw. I installed it correctly, installing I9000XWJM8 first (the MODEM and PDA, not CSC as none seemed to come in the package).
Everything was working smoothly until I realise 3G/Data Network is no longer working (it did previously). Not only that but it seems it won’t connect to my service provider (Three) at all (emergency calls only), and I’ve also now noticed GPS doesn’t seem to work at all, I can’t even get into GPS test mode. Wireless does however work though it being off, or on, has no impact.
I’ve tried:
Flashing different firmware - Stock JM8 and Doc Froyo’s latest JPO.
Hard Reset
Deleting and re-entering APN settings, though they were correct and already on the phone anyway.
Testing my SIM on another phone – signal is strong, inc. 3G on that.​
I’m really at a loss here. Any ideas anyone?
Thanks
UPDATE: So, I won't bump this myself, but incase anyone finds this thread in the future: the gprs, gps, 3g, etc all work - just not in my house, on the SGS, anymore. I have no idea why - my other phone, it's fine.. and it used to be fine with this phone too. I'll update again if I figure it out.

the other phone works fine with the same sim you are using in the SGS?

Yep, the same SIM works in my old Nokia 6600 fold, people in my house also with Three are getting solid reception right now. 4-5 bars with 3g established.
It worked beautifully all the way home from work on the bus, just not in/around my house.
It's as if the local cell towers near my house have blocked my SGS specifically (can't receive calls or texts either). I did turn the wireless on and off in short succession (which would cause the gprs/3g to try to re-establish each time).. maybe I flooded them and they blocked my IMEI? Or is that just a ridiculous idea?
The real odd thing is GPS not working either (again, just around my house/street); surely it doesn't need a cell site for that?
It does seem as if I can't download apps from The Market anymore either, and have tried various cache clearing solutions to fix it (problem occurred roughly when I noticed my reception was nill).

You might have a problem with the band selection thing of your phone.. have you tried downloading/speed test when you /do/ get a connection? If it seems capped at 40kbps, you might have the same problem I experienced before, of being stuck on 2g. (Despite settings saying otherwise).
I fixed it by doing the solution to having a missing 850 band, the thread of which is found somewhere in this forum.

Thanks. That sort of worked earlier.
It made a slow data connection, and some texts came through.
I then went out to a location a few miles away, had a look and it was still on a slow connection type for a few mins, then all of a sudden it went to HSPDA (with the occasional 3G flicker) and was blistering fast.
Now that I'm back home, I've lost all reception again and can't make/take calls
[EDIT] Clicking around my phone in the hopes of finding something: checked product code in my nv_data.bin file with SGS Toolbox, and it's showing I9000HKDKOR; whilst the backup is showing I9000HKDH3G - could I be on to something? I backed up my efs folder after rooting before doing anything else - so, going to try restoring that.

I have a hunch based on a 2 year old post (http://forum.xda-developers.com/showthread.php?t=445913).
From what I understand, Three UK piggy back on Orange's network when Three's 3G cell towers are out of reach. Orange don't provide Three users with the full service though, just 2G and I'm guessing they prioritise Orange customer traffic.
I think when I flashed my phone, I removed code commanding the phone to prefer Three cell towers. Without that code, the phone simply goes to the strongest/first signal it detects. I'm guessing in the area near where I live, it's Orange (or maybe any old network which is why I'm often getting Emergency Calls only).
This is all guesswork. I'm hopeful, seeing as if I quickly switch the SIM to my two+ year old phone, then I quickly get 5 bars and 3G.. unless the SGS's signal issues really are *that* bad.

http://forum.xda-developers.com/showthread.php?t=831022
Try see if you have the symptom of a missing band?

Hi Nwsk, I tried that before and assumed it didn't work, but actually the change isn't sticking. Which seems to be the case for a couple of others! Thanks for pointing me back to it!
[Edit]
Ohhhh dear. Now I have another theory (I really hope I'm wrong).
I've just read on a thread that some phones don't have the 850 Band, it's down to a lack of hardware support. I'd wager every Three UK branded phone sold will have the correct hardware as stock. I sent my phone back to Samsung for repair, they said they replaced the motherboard.. inference: they replaced it with one without the WCDMA 850 support.

Hmm, I'm definitely no authority on this, since I'm just guessing.. but I figure if that if was a true hardware defect, you wouldn't even be able to get it temporarily?
Are you using any 'battery-saving' type apps? Something might be messing up and keep reverting the settings. I had this occur to me a second time when I was trying out the superpower app here, I think it conflicted with another app I was using, and it borked out my network connectivity. Somehow fixed that after a few reboots, and lots of messing around in the phone debug menu with the 3g/2g thing, it suddenly worked again.

I've not seen it manage to get onto 850MHz WCDMA in my house for a while, not since the mobo got replaced (I should qualify that with a statement on my bad memory ). It will occasionally latch onto something if I walk around the house, giving me a slow data connection with the G symbol showing - it will drop pretty quickly.
Messing around while I write this, I've just realised if I set my phone to GSM(2G) with roaming [Three UK phones need this on so they can connect to Orange towers], then it does establish a data connection at 1800mhz. If I force WCDMA only, I get NOTHING. Setting both/auto leads to it being dodgy/instable, as I've discribed above.
My Nokia 6600 supports 850mhz UMTS, which would explain why it's working well inside my house.
I don't think it's an app. I've flashed a few different firmwares in an effort to get this fixed, it's currently on official Froyo JPO (not even rooted!) with Multi-CSC and a few completely harmless apps. I'd try the stock Three firmware if it was available somewhere.
I'm hoping it's software like you suggest! I will tinker away for now!
Thanks for all the help, at least now I'm fairly sure I'm on the right track!

[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

Please help, 3G/hspda:9/ problem.

Hello. Below is a link to a problem I am having:-
http://community.o2.co.uk/t5/Androi...4-1-2-update-via-kies-HELP-Please/td-p/371734
Basically, having a problem with 3g or lack of it! It use to work fine but since flashing to 4.1.2 it doesnt work at home. It works 5 miles up the road and 5 miles down the road but not here, even though here I have the strongest signal! Were I am here, I use to connect to hspda:9 but now its just hspda. My phone is connected but there is no bandwidth. I have flashed, reflashed, wiped cache, factory reset and flashed back to a older version and still it doesnt work. Does my phone use a different bit of hardware/driver/modem to use hspda:9? Down the road about 2 miles away, it changes between hspda and hspap which I have never seen. O2 say there is no network problem in my area. I presume my phone csnnot be faulty as it works in other areas but the place where I historically get the strongest signal on hspda:9 doesnt work anymore? Flashed and wiped so many times I really dont know what to do now.... Help!

Wow, 66 views and no help.Tough crowd!

try an earlier modem file and double check the APN settings are correct

Try with different SIM card
You will known if its related with your phone or your network.

Looks like you have changed your modem to me .
jje

I have checked my apn settings and they are correct. I have put my wifes vodafone sim card in my phone and it works perfectly. It works on other masts on o2, just not on the one were I live! It is either a problem with o2 mast/signal where I live OR my mobile phone doesn't support hsdpa:9 anymore! It connects to hsdpa but doesnt have any bandwidth. I have flashed back to 4.1.1 o2 firmware and that didnt work. Then flashed 4.1.1 btu firmware and that didn't work so flashed back to 4.1.2 o2 firmware.
I was originally on o2 firmware but then flashed a btu update and changed the csc to btu. I did this on 4.04 btu and it was fine. Upgraded to 4.1.1 btu and that was fine, flashed to 4.1.2 btu and that is when I noticed the problem. The problem is I dont normally use 3g at home as I use wifi so I noticed the problem after I upgraded to 4.1.2 but it could have stopped working before then but if I hadnt used 3g for a while i wouldnt have noticed it. Fed up with it now!

Reading your link with all the things you've done to try and solve this, it definitely looks like an O2 problem. Especially if you flashed a stock BTU.
If there replacement sim doesn't solve the problem, the only other thing you could try is disabling fast dormancy.
It may fix the issue with your home mast (emphasis on the may), but it will increase the battery drain where 3g works for you.
Sent from the App that Time Forgot.

Well.... FINALLY I got someone who cared at o2. Been on the phone for 40 minutes and then spike to a engineer and they have opened a case and going to investigate as it they think its a 3g fault on the mast! 8 days and 6 phone calls it has taken but hopefully it will be sorted! Ended up on a o2 csc now though instead of btu but reset my phone so many times lately it doesnt take that long anymore to set back up!

[Q] Wi-fi issues

About a month ago I noticed that my wi-fi is working weird. It is connected, but I can't use the Internet. Looking at the wi-fi icon I can see that it is sending data to my router, but it is not recieving anything back. I basically have the arrow going up, indicating upload, but no arrow down, indicating download. After a few minutes (or after restarting wi-fi) it goes to normal for some time and then it stops working again. I'm currently on optimised CM12.1, but it doesn't matter which ROM I use. My router works fine. I checked with another phone while my s4's wi-fi wasn't working. I was considering updating baseband and modem, but I wasn't sure which one to use. I'm in Poland and my carrier is Mobile Viking, but they use Play infrastructure (or T-Mobile, if play is unavailable). It isn't anything that would make me change my phone, but it is a bit annoing.

*bump*

killermenpl said:
About a month ago I noticed that my wi-fi is working weird. It is connected, but I can't use the Internet. Looking at the wi-fi icon I can see that it is sending data to my router, but it is not recieving anything back. I basically have the arrow going up, indicating upload, but no arrow down, indicating download. After a few minutes (or after restarting wi-fi) it goes to normal for some time and then it stops working again. I'm currently on optimised CM12.1, but it doesn't matter which ROM I use. My router works fine. I checked with another phone while my s4's wi-fi wasn't working. I was considering updating baseband and modem, but I wasn't sure which one to use. I'm in Poland and my carrier is Mobile Viking, but they use Play infrastructure (or T-Mobile, if play is unavailable). It isn't anything that would make me change my phone, but it is a bit annoing.
Click to expand...
Click to collapse
It's like you said. The only thing you can try is changing your modem.
Do you have a stable connection on other wifi networks?

I have no way of checking other networks (living in a small town with no public wi-fi). Which modem should I use? I'm in Poland nad I bought my S4 in a store (not from any carrier)

killermenpl said:
I have no way of checking other networks (living in a small town with no public wi-fi). Which modem should I use? I'm in Poland nad I bought my S4 in a store (not from any carrier)
Click to expand...
Click to collapse
There is no best modem. You have to try it for yourself. I would suggest taking lollipop modems, but you have to be on a lollipop bootloader for that.

If I am on lollipop rom, does that mean that I have lollipop bootlader? When I bought my phone it was on android 4.4.2

Since lollipop my wifi has been terrible on my i9505 stock rooted. My iOS and windows devices are rock solid but sgs4 has crap connection strength. On previous devices the radio with the upgrade was normally to blame but I'd welcome any suggestions. Does cm12 use the same radio as stock?

[N9007] Modem problem with 3G/H/H+ switching

Hi!
My device is Samsung Galaxy Note 3 N9007 (Australia version OPS) and I've recently flashed 'new' firmware from sammobile.com to update my modem, bootloader etc. Everything went fine but problem with 3G/H/H+ occured. From some threads here and some from reddit I concluded that this phenomenon with switching between those three is called Fast Dormancy and that isn't bad thing and it should work great. BUT. I doesn't work at all. While switching between 3G and H+ there is no mobile data transfer which is so annoying. On H+ it works great, but when switched to 3G it doesn't. I live in Poland not Australia so I have diffrent bands for 3g etc but on old modem everything was ok, Fast dormancy didn't occured. So I restored old modem and restore old ROM which is MagmaNX but this problem still occured! Even on old modem. So I've done some research again I tried to disable Fast Dormancy with root, I've tried to disable it through service codes 9900 9090 4636 301279. Nothing helped. Best thing is that on LTE it works great, but with LTE on I can see my battery crying.
So I'm asking you, dear Users of xda Developers ( because you can do miracles ) IS there any posibility to get it back going ?
PS. I know its strange that I have model N9007 rather than N9005 but it happend and I couldn't do anything about it (I've got tricked on ebay, sadly)
Here are few screenshots about my phone. If you want some more info just let me know. @bump

I have found a soulution.