Database Info

[Q] Network problems with I9000 bought in Singapore, using in Canada

Hi everyone,
I bought a Samsung Galaxy S GT-I9000 (16gb) in Singapore and was using it fine on Singtel's network (signed a contract with them). Now I have moved back to Canada and brought my phone with me assuming that all would be ok to use it with the network here. However I'm having big problems with this one network I just signed up with (Virgin Mobile).
85% of the time I cannot connect to it: voice calls and SMSing won't work nor will the data work on it, the only thing it says is "Emergency calls only". Then at other times everything will seem to connect and work fine - I can make calls and use data.
Virgin Mobile will not support me much because they're thinking it's the phone's problem, if I use the phone they gave me (a lower-end model) it works fine.
Here are some details of my phone:
Firmware version
2 2
Baseband version
I9000DXJPA
Kernel version
2 6 32 9
root (at) SE-S604 #1
Build number
FROYO DXJPA
If I check out the status, it usually says this:
Network
Unknown (switches to VIRGIN when it does work)
Mobile network type
UMTS (switches between that and HSDPA and GPRS)
Service state
Out of service
Mobile network state
Disconnected (switches to connected when working, and even when it's not working sometimes)
I have Network mode set to auto mode (GSM/WCDMA). I've tried to switch it to GSM only but that didn't seem to change anything.
I'm wondering if there's some kind of configuration settings I still need to do with the phone? I'm also wondering if it is the network I'm with right now? Virgin Mobile isn't one of the bigger telcom companies here and I'm thinking that if I switch to one of the bigger telcoms, will it work better?
Something else to add - before I signed up with Virgin I was using my phone with a pre-paid service (called Chatr) for voice only and it was working fine.
I'm sure this phone can support the GSM frequencies here.. can't it?
I also still have the Singtel customizations on the phone. Will it help if I remove it?
Any help would be greatly appreciated!
Thanks a lot!
Ryan

sorry, wrong category..

[Q] how to select network operator manually?

i am using AT&T's Samsung galaxy s2 skyrocket (unlocked), i am unable to select a network operator manually. As i keep going around different countries, i keep on purchasing local sim cards for calling home, so i need to select the network manually, otherwise it will select the network which has best signal strength and i may land up paying heavy charges for roaming.
when i go to wireless and network/ mobile networks/ network operators only thing which comes written is "DEFAULT SETUP" and that is greyed out. (when i tap on nothing happens).
also when i change back to my old AT&T sim, i am able to access that greyed out area, but when i put another sim "DEFAULT SETUP" is again inaccessible.
can someone please guide me through it..??

Are you using the stock ROM?
Sent from my SGH-T989 using Tapatalk

I have bought the phone just a weak ago... i have changed nothing except for SIM card....
actually i dont know any thing about ROMs and i m new to android also... i just guess that above written satisfies your question.

well thats your answer. You can not do that on stock att firmware

what modifications i have to do .... to achieve the desired results...??
and please tell HOW to do also....!!

You need to flush custom ROM that supports changing network operator settings.
Look at this post if you would like to use custom ROM:
http://forum.xda-developers.com/showthread.php?t=1383464

[Q] Nexus S is not getting Mobile network(GSM) signal

Hi All,
I got a Nexus S (I9020T) from US. I am trying to use it in India with a GSM carrier - BSNL ( gsm 900Mhz).
Problem :
When ever I am inserting GSM Sim, it catches the signal (both gsm + data) but after 3-5 minutes only gsm signal is lost. I cannot make or receive calls, it says emergency call only.
I tried to make call, it says "no mobile network available". Where as i could surf the net with 3g data plan.
what I did :
1) I tried to reboot the phone. Still no signal.
2) I tried to remove battery and sim , and put it back and switch on. Still no signal.
3) I tried to dial *#*#4636#*#* . Enter into phone information-->Select preferred network type to - WCDMA preferred, GSM only (all GSM options tried)
and reboot the phone. Still no help.
Please help me. I am completely frustrated.
Regards,
Rajesh

Contact your provider , they might be blocking your device for some reason ...

Have you added the new APN?
(I'm assuming you're on 4.0)
Settings --> More... --> Mobile networks --> Access Point Names --> Press menu button and select "New APN"
Google the APN settings for your provider and input them. Make sure you remember to press menu and SAVE APN when your finished.

krymson0 said:
Have you added the new APN?
(I'm assuming you're on 4.0)
Settings --> More... --> Mobile networks --> Access Point Names --> Press menu button and select "New APN"
Google the APN settings for your provider and input them. Make sure you remember to press menu and SAVE APN when your finished.
Click to expand...
Click to collapse
Im in the same boat tried to set apn wont save no matter what i do. please help.

Hi
krymson0 said:
Have you added the new APN?
(I'm assuming you're on 4.0)
Settings --> More... --> Mobile networks --> Access Point Names --> Press menu button and select "New APN"
Google the APN settings for your provider and input them. Make sure you remember to press menu and SAVE APN when your finished.
Click to expand...
Click to collapse
Hi,
Thanks for reply..
Yes, I added APN..(it automatically appeared) and also I am able to surf the net due to 3G data plan, but strangely i am not able to make any calls nor receive any calls, it says no mobile network available

What is the version of your baseband? You can check it in Settings/About or in Fastboot/Bootloader mode.
What is the model written beneath your battery on the sticker?

anglergab said:
What is the version of your baseband? You can check it in Settings/About or in Fastboot/Bootloader mode.
What is the model written beneath your battery on the sticker?
Click to expand...
Click to collapse
Hi, baseband version - I9020XXKI1
Kernel Version - 3.0.8-g6656123
model -I9020T

The baseband is OK. It supports 900 MHz operation. You should contact your operator regarding this issue, it can happen they use special/non-standard GSM solutions (frequency sets, etc.) which is not supported by this phone.
You can try switching to 2G mode only (you can find this in Settings/Mobile networks).
You should check in this mode the signal in Settings/About/Status (in dBm).
If it's below -100 dBm then signal coverage is poor or unsupported frequencies are used by your operator or your HW radio chip is corrupted.
To rule out the last possibility, you should check your signal and dBm value with a SIM card from another operator.
UMTS functionality is handled by a separate chip (not by GSM radio), so it can happen 3G is OK but GSM (2G) not.

Hi
anglergab said:
The baseband is OK. It supports 900 MHz operation. You should contact your operator regarding this issue, it can happen they use special/non-standard GSM solutions (frequency sets, etc.) which is not supported by this phone.
You can try switching to 2G mode only (you can find this in Settings/Mobile networks).
You should check in this mode the signal in Settings/About/Status (in dBm).
If it's below -100 dBm then signal coverage is poor or unsupported frequencies are used by your operator or your HW radio chip is corrupted.
To rule out the last possibility, you should check your signal and dBm value with a SIM card from another operator.
UMTS functionality is handled by a separate chip (not by GSM radio), so it can happen 3G is OK but GSM (2G) not.
Click to expand...
Click to collapse
Thanks for reply..n helping me out.
I believe my carrier BSNL uses standard GSM frequencies..samsung note, galaxy series pretty much work with it.
I tried switching to 2G mode, same problem.
I checked signal strength : it varies from -91dBm to -93dBm.
I inserted other GSM carrier SIM , same problem - no signal.
This Nexus S mobile was working fine with T-mobile when I was in USA.
It seems some Hardware radio incompatibility or something else..God Knows!!

Hi
Rajeshandroid said:
Thanks for reply..n helping me out.
I believe my carrier BSNL uses standard GSM frequencies..samsung note, galaxy series pretty much work with it.
I tried switching to 2G mode, same problem.
I checked signal strength : it varies from -91dBm to -93dBm.
I inserted other GSM carrier SIM , same problem - no signal.
This Nexus S mobile was working fine with T-mobile when I was in USA.
It seems some Hardware radio incompatibility or something else..God Knows!!
Click to expand...
Click to collapse
One thing i noted, it identifies the carrier correctly in Settings-->About-->Status-->Network
IMEI(*#06#) shows different from the IMEI written under battery.

Are you using Custom Rom?

Why IMEI difference between device screen and behind battery ? something wrong is here ...

mahanddeem said:
Why IMEI difference between device screen and behind battery ? something wrong is here ...
Click to expand...
Click to collapse
Your /efs is corrupted and some carriers block generic IMEIs, that's where your issue lies
Sent from my ice cream powered Nexus S

Wrong IMEI
Yes my /efs is corrupted. My IMEI shows 004999010640000.
I came to know it happened due to flashing custom ROMs ( Ohh god why did i flash custom ROM) .
I used CWM. This didn't back up my /efs folder and hence the problem.
Its my bad luck, even i did not read any suggestion to back up /efs folder in any guide for flashing custom ROM.
Its really waste of time and effort on my part to go for Android. So much complexity for just a cellphone.
I would better go for iPhone. (Thank God , no custom IOS).
RIP - my Nexus S.
Thanks everybody for helping me and answering me.

The IMEI can be restored, so your Nexus S can be made registered on your operator's network. Instructions to do so can be found, but it can be illegal in your country. Modifying an IMEI is generally is, but if it's done for restoring purposes, then it might not fall in the same category.
Rajeshandroid said:
So much complexity for just a cellphone.
Click to expand...
Click to collapse
The problem with your statement is, that these are not just cellphones, much more minicomputers (with GSM radio and UMTS modem).
Rajeshandroid said:
I would better go for iPhone. (Thank God , no custom IOS).
RIP - my Nexus S.
Click to expand...
Click to collapse
Android is far better customizable and not proprietary software as iOS. Apple can keep its price unrealistically high. They cost far much than their real value. So they are bought not because their usefulness, rather to show other people that one can afford it.

[Q] LG Nexus 5 fails to recognize celullar network

Hello,
I have a Nexus 5 phone that came with Kitkat a few months back. The phone worked without issues until I decided to update to Lollipop 5.0 (OTA update) at the end of November. Initially the phone started to have troubles to detect the network at certain times - typically "playing" with the settings "Preferred network type" by changing from 4G to 2G, restarting, letting the phone detect the network on 2G mode and change back to 3G or 4G would fix the problem. The issue became more and more frequent until a point where i can not change the "Preferred network type" from 4G to any other type (as if it is "glued" on that setting). At this point my phone does not recognize at all the cellular network but It does seem to recognize the SIM card since i need to enter the 4 digit code to unlock SIM and it displays the network name, just no service.
I've researched the internet and I've tried several things but nothing seems to fix it such as restart mobile, change to airplane mode and back, take out and re-insert SIM card, request new SIM card from operator. The APN settings seem to be OK.
I've noticed that a new 5.1 version just came out and although I was not fully familiar with the process i decided to give it a try (after reading several instructions) and update manually (using factory images posted) and see if that would fix it. The phone is now with version 5.1 and still can't recognize the cellular network - no service. Everything else works fine, including Wi-Fi.
Has anyone experienced such issue after OTA update? The only odd thing I can think of is that I did the initial OTA update to 5.0 in US while i was on travel from Europe, but I can't say if this would in some way contribute to the issue. The mobile is D821 model.
Since I was stuck and mobile is within warranty period, I have sent it to service repair. I would be interested to know ideas of what could be the issue cause.
Sorry for long message, any help would be very much appreciated.
Pedro

LG G3 850d 2G,3G,4G

Hi, I recently bought a LG g3 smarthphone and I found out that it's an AT&T version phone, but thankfully it's unlocked. My problem is, that it doesn't get any mobile network. In the setting it says that the Mobile network type this device can use is HSPA, my local carriers can only provide LTE, GSM and WCDMA rat types, I don't know if it's the case. I've tried to solve this on my own, but without luck. The solutions with 3845#*850# or similar codes just woun't work, when I choose any RAT it says: "succsess", but it doesn't change a thing and when I choose "LTE only mode", the phone blocks my mobile connection and says: "Restricted access changed: Data service is blocked" .
I really need any help, because I cannot see myself using a mobile phone without mobile internet. I tried to use 2G, 3G and 4G networks, but none work, nothing appears. Also I tried to fix this problem by flashing a Cloudy ROM wich is lollipop 5.0 and it didn't solve my internet problem. BTW, my location is Estonia.
I really need your help guys, I'm desperate as hell, this is my last option, because I didn't find any other solutions on my own.
Counting on you :3

romax11 said:
Hi, I recently bought a LG g3 smarthphone and I found out that it's an AT&T version phone, but thankfully it's unlocked. My problem is, that it doesn't get any mobile network. In the setting it says that the Mobile network type this device can use is HSPA, my local carriers can only provide LTE, GSM and WCDMA rat types, I don't know if it's the case. I've tried to solve this on my own, but without luck. The solutions with 3845#*850# or similar codes just woun't work, when I choose any RAT it says: "succsess", but it doesn't change a thing and when I choose "LTE only mode", the phone blocks my mobile connection and says: "Restricted access changed: Data service is blocked" .
I really need any help, because I cannot see myself using a mobile phone without mobile internet. I tried to use 2G, 3G and 4G networks, but none work, nothing appears. Also I tried to fix this problem by flashing a Cloudy ROM wich is lollipop 5.0 and it didn't solve my internet problem. BTW, my location is Estonia.
I really need your help guys, I'm desperate as hell, this is my last option, because I didn't find any other solutions on my own.
Counting on you :3
Click to expand...
Click to collapse
I think your a little confused about your network. HSPA IS WCDMA/GSM. You want to just slept gsm/WCDMA/LTE
Sent from my iPhone using Tapatalk

Flashing a ROM is not the solution. AT&T version of the LG G3 covers a limited radio frequency spectrum. It could be that the phone does not cover the frequency of your carrier. Another issue may be with the carrier themselves blocking the IMEI (I know some carriers require registering the IMEI on their network). Of course you must also make sure the carrier has data services available to you.

I kinda have the same problem....
No service.
I've tried everything to no avail.
Help gor a fix.