[Q] Problem with T999 when using GSM900 - T-Mobile, Samsung Galaxy SIII

I unlocked t999(T-Mobile) with Z3x without any problem.
But it works perfectly on 1800 band but when trying 900 band sim takes too much time to connect call and sometimes call ended without connecting, phone not reachable when we calls to this phone.
I changed settings to gsm only, 900 preffered etc, updated firmware, different radios but same problem.
Imei, Serial number everything is all right
please help somebody

where do u stay
gsm420 said:
I unlocked t999(T-Mobile) with Z3x without any problem.
But it works perfectly on 1800 band but when trying 900 band sim takes too much time to connect call and sometimes call ended without connecting, phone not reachable when we calls to this phone.
I changed settings to gsm only, 900 preffered etc, updated firmware, different radios but same problem.
Imei, Serial number everything is all right
please help somebody
Click to expand...
Click to collapse
Where do u stay?

dikachik1 said:
Where do u stay?
Click to expand...
Click to collapse
India

Related

No service - HELP!

Hi Everyone.
Stock O2 ICS- rooted - bootloader unlocked
I've recently bought used HTC One V locked to O2. Problem is gsm service never worked for me.
WiFi, Bluetooth, GPS are fine but emergency call only.
I've tried different sim, 2 custom roms, hard reset and no lucky.
Under mobile network setting I cannot swap between WCDMA only - Auto - GSM only, it is sticked to WCDMA/GSM Auto only
When push *#*#4363#*#* Cannot change network mode too, WCDMA preferred fixed only, if going to radio band selection cannot choose any (Automatic, EURO Band etc) just got message "Set [automatic or any] Unsuccessful.
What is weird, When I turn mobile data on with correct APN for my provider (currently giffgaff) I have gprs running and can send and receive data, but with my other phones I had before my service has been alwaysfast as 3G and HSDPA, not "G" like now.
Please see below my screenshots, I've checked my mobile network with many apps and there is what I've found
Ok this may seem a very stupid question but it happened more than once. Are you using the little piece that covers the sim card? That has contacts in it, without it there is no signal
mr_nooby said:
Ok this may seem a very stupid question but it happened more than once. Are you using the little piece that covers the sim card? That has contacts in it, without it there is no signal
Click to expand...
Click to collapse
thanks, but no lucky
osstis said:
thanks, but no lucky
Click to expand...
Click to collapse
If you still have warranty, run a ruu so it goes back to stock, and take it to the HTC centre. If you are lucky they will recognize it as hardware problem and give you a new one. Remember to tell them it never worked, and if they ask about root or stuff, you don't know about it
No I don't have a warranty (it's second hand and a have no seller contact anymore), otherwise I would not asking here. Looking for somebody who solved this, if.

Unlocked SGH-T989 works on one network but not another?

Hello all, I'm having a strange issue with the t-mobile S2. First off I'm not from the US, the person brought the phone for me to unlock. I sent the IMEI code and got back all the unlock codes. When I inserted my local sim card (bmobile) I noticed that the phone did not prompt to enter the unlock code. Instead it seemed to register on the network, I was able to make a call with the phone so I know it works.
Here is where it gets interesting, I inserted another sim (digicel) and it does not register on the network. I even went into the mobile settings and tried to switch the network manually but to no avail. My question is basically this, what? Why would a seemingly unlocked phone work on one network and not the other. I will have to ask for a refund now since the phone was already unlocked.
Here are the bands of the carriers:
MCC MNC Brand Operator Status Bands (MHz)
374 12 bmobile TSTT Operational GSM 850 / GSM 1900
374 130 Digicel Digicel Operational GSM 850 / GSM 1900 / UMTS 1900
Any thoughts?
amd-dude said:
Hello all, I'm having a strange issue with the t-mobile S2. First off I'm not from the US, the person brought the phone for me to unlock. I sent the IMEI code and got back all the unlock codes. When I inserted my local sim card (bmobile) I noticed that the phone did not prompt to enter the unlock code. Instead it seemed to register on the network, I was able to make a call with the phone so I know it works.
Here is where it gets interesting, I inserted another sim (digicel) and it does not register on the network. I even went into the mobile settings and tried to switch the network manually but to no avail. My question is basically this, what? Why would a seemingly unlocked phone work on one network and not the other. I will have to ask for a refund now since the phone was already unlocked.
Here are the bands of the carriers:
MCC MNC Brand Operator Status Bands (MHz)
374 12 bmobile TSTT Operational GSM 850 / GSM 1900
374 130 Digicel DigicelOperational GSM 850 / GSM 1900 / UMTS 1900
Any thoughts?
Click to expand...
Click to collapse
Never unlocked a phone....but does the new sim automatically setup new APN settings? If so, are they right. And if not....that's your issue maybe??
Again....totally guessing.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
kj2112 said:
Never unlocked a phone....but does the new sim automatically setup new APN settings? If so, are they right. And if not....that's your issue maybe??
Again....totally guessing.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
Click to expand...
Click to collapse
Yes it sets the appropriate APN settings, sometime I also have to go into the mobile networks menu and scan for networks and always update it :S very very strange, could flashing a different baseband help?
amd-dude said:
Yes it sets the appropriate APN settings, sometime I also have to go into the mobile networks menu and scan for networks and always update it :S very very strange, could flashing a different baseband help?
Click to expand...
Click to collapse
I believe you still need the new T-Mobile radio....I think.
I'd triple check the apn settings tho....every line. They'd be different for each sim/carrier. Try Googling the apn setting for the carrier. Throw t989 in the search....in case someone has same phone on same network as you.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
kj2112 said:
I believe you still need the new T-Mobile radio....I think.
I'd triple check the apn settings tho....every line. They'd be different for each sim/carrier. Try Googling the apn setting for the carrier. Throw t989 in the search....in case someone has same phone on same network as you.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
Click to expand...
Click to collapse
Thanks mate, i'll give it a try.
The last time I had a T989 that worked on one network (AT&T) but not the other (T-Mobile), it was because it was reported stolen.
I had bought it used, and had no idea it was stolen.
I checked the IMEI here:
http://www.t-mobile.com/VERIFYIMEI.ASPX

Can't get 3g to work

Hello, I just got a Note 2, I got it on amazon.
But I can't get to connect to my 3g network. I live in el salvador, and our 3g network works on 900mhz which my Gt-n7100 suppose to work, but it just fails anytime.
At first I fought it was a fake note, but everything looks good, amazing screen, good s-pen, really fast, touchwiz, etc.
(I have a note I so I can compare) . the only thing is that it says that it has a total of 24gb of storage (weird).
I downloaded the genuine app, and it says that It is genuine.
So how can I make it work , If I check GSM only, it does connect to the network (calls, data just GPRS even tough EDGE should work) , but when I check WCDMA only It finds the network but it fails on registering.
I tried to update on the phone, but it fails, I will try with KIES and see if that works.
But please help.
Thanks
P.S I should note that my modem number is XX (which it's supposed to be europe countries) does it has anything to do?
I remember a while ago that I flashed an htc, I had to flash the radio band, so It can pick my countries frequencies? could that be?
thanks
dcuchillas said:
Hello, I just got a Note 2, I got it on amazon.
But I can't get to connect to my 3g network. I live in el salvador, and our 3g network works on 900mhz which my Gt-n7100 suppose to work, but it just fails anytime.
At first I fought it was a fake note, but everything looks good, amazing screen, good s-pen, really fast, touchwiz, etc.
(I have a note I so I can compare) . the only thing is that it says that it has a total of 24gb of storage (weird).
I downloaded the genuine app, and it says that It is genuine.
So how can I make it work , If I check GSM only, it does connect to the network (calls, data just GPRS even tough EDGE should work) , but when I check WCDMA only It finds the network but it fails on registering.
I tried to update on the phone, but it fails, I will try with KIES and see if that works.
But please help.
Thanks
P.S I should note that my modem number is XX (which it's supposed to be europe countries) does it has anything to do?
I remember a while ago that I flashed an htc, I had to flash the radio band, so It can pick my countries frequencies? could that be?
thanks
Click to expand...
Click to collapse
Check your APN settings. I got this problem few days ago. Just set ur apn to default. Use this app. https://play.google.com/store/apps/details?id=com.tweakker
As for the 24 gb, u might have gotten the 32gb variant.
Smack that thanks button if I helped.
N7105 Note 2 LTE International powered by Illusion ROM 2.6
Plasma Kernel 2.02
Sent from a small country named Singapore
thanks, but it's not that the data isn't working, I cannot even connect to the WCDMA network so no calls, no data.
It works on "GSM ONLY" well kinda, cause in my last phone when I was on GSM only it had EDGE connection, but this one has GPRS.
I have set the correct APN for my carrier. But I cannot even connect to the network.
Irwenzhao said:
Check your APN settings. I got this problem few days ago. Just set ur apn to default. Use this app. https://play.google.com/store/apps/details?id=com.tweakker
As for the 24 gb, u might have gotten the 32gb variant.
Smack that thanks button if I helped.
N7105 Note 2 LTE International powered by Illusion ROM 2.6
Plasma Kernel 2.02
Sent from a small country named Singapore
Click to expand...
Click to collapse
dcuchillas said:
Hello, I just got a Note 2, I got it on amazon.
But I can't get to connect to my 3g network. I live in el salvador, and our 3g network works on 900mhz which my Gt-n7100 suppose to work, but it just fails anytime.
At first I fought it was a fake note, but everything looks good, amazing screen, good s-pen, really fast, touchwiz, etc.
(I have a note I so I can compare) . the only thing is that it says that it has a total of 24gb of storage (weird).
I downloaded the genuine app, and it says that It is genuine.
So how can I make it work , If I check GSM only, it does connect to the network (calls, data just GPRS even tough EDGE should work) , but when I check WCDMA only It finds the network but it fails on registering.
I tried to update on the phone, but it fails, I will try with KIES and see if that works.
But please help.
Thanks
P.S I should note that my modem number is XX (which it's supposed to be europe countries) does it has anything to do?
I remember a while ago that I flashed an htc, I had to flash the radio band, so It can pick my countries frequencies? could that be?
thanks
Click to expand...
Click to collapse
i think you have 32gb version..plus minus all apps in the phone you got 24gb of storage.
about your 3g,i dunno about that because there many fix solution...some said just factory reset,some said modem is the problem and flash other modem may fix it...you can try bring it to local shop and ask them
Just one question, If the genuine app, says that it is genuine? that's trustable?
I am just worried that It might be a knock off after all, but everything on the phone seems excellent.
dcuchillas said:
thanks, but it's not that the data isn't working, I cannot even connect to the WCDMA network so no calls, no data.
It works on "GSM ONLY" well kinda, cause in my last phone when I was on GSM only it had EDGE connection, but this one has GPRS.
I have set the correct APN for my carrier. But I cannot even connect to the network.
Click to expand...
Click to collapse
go to setting >more setting>mobile network>network mode>click GSM/WCDMA (auto mode)
sora9009 said:
go to setting >more setting>mobile network>network mode>click GSM/WCDMA (auto mode)
Click to expand...
Click to collapse
I've done that, but it only works on GPRS not in 3g .
Also, when I check for the network operators on all the phones I got, I always get all the carriers, but in this phone I can only get one.
dcuchillas said:
Just one question, If the genuine app, says that it is genuine? that's trustable?
I am just worried that It might be a knock off after all, but everything on the phone seems excellent.
Click to expand...
Click to collapse
just connect it to kies or dial *#0*#
sora9009 said:
just connect it to kies or dial *#0*#
Click to expand...
Click to collapse
I tried the code and It took me to some sort of testing thing
dcuchillas said:
I tried the code and It took me to some sort of testing thing
Click to expand...
Click to collapse
fake note 2 do not have that testing thing..so you are good :laugh:
I've done that, but it only works on GPRS not in 3g .
Also, when I check for the network operators on all the phones I got, I always get all the carriers, but in this phone I can only get one.
Click to expand...
Click to collapse
cant really help you about this
sora9009 said:
fake note 2 do not have that testing thing..so you are good :laugh:
cant really help you about this
Click to expand...
Click to collapse
Well thanks, that's a relief.
I tried a factory reset right now, will try to update later.
Could it be that I have another model rom?
cause in the settings I don't get WCDMA/GSM , but LTE/WCDMA/GSM. But the GT-N7100 doesn't have LTE.
dcuchillas said:
Could it be that I have another model rom?
cause in the settings I don't get WCDMA/GSM , but LTE/WCDMA/GSM. But the GT-N7100 doesn't have LTE.
Click to expand...
Click to collapse
n7105 rom cannot be installed in n7100 phone..different hardware
maybe some expert here can help
Please If anyone can Help.
I bought this phone because my old phone (xperia ion) only supported the 900mhz frequency on GSM, so I could only get EDGE speed.
This phone (NOTE 2) it's supposed to support 900mhz in the HSDPA, but I can't get it to work only on GSM and with GPRS (slower than EDGE)
PLease, I really need help
Okay, so I was trying to do the ARIZA patch, because my serial number is 00000000 and I couldn't connect to any networks.
When I put my phone into download mode, it was all in korean and it says product name: SHV-E250S, which is supposed to be the korean note, but it doesn't have an antenna like the phones I have seen.
Could this be that this phone is really screwed???? Cause it like a gt-n7100 on the rom but has LTE, and doesn't pick any network .
If this real the korean it only works in this band 1900, 2100, which none of my carriers in my country use them...
Would you say I try to root it and try to patch??

Weird network issue... no network when switching to 3G/4G :(

I am in a fix here!!! Since long I have been facing this problem wherein, whenever I switch to 3G/4G mode, my phone looses network forever.. It seems to work perfectly fine in 2G mode.. I tried everything.. playing with radios, factory resetting and all the other help that I could get but in vain. I thought it is a hardware issue and since mine is an imported one, and I don't have warranty, I was avoiding to take it to a repair centre.. A week back, I went to Malaysia for a trip, and as I put a local SIM, my 3G starts working perfectly fine... I thought it could be a radio issue and as I came back to India, to my surprise my old local SIM was working fine in 3G mode yet again!!! I thought somehow my problem was sorted!!! It worked for 2 days and it is back to the old problem now.. no 3G whatsoever!!!! Please help me guys!!!
I was just browsing and I read an samsung user facing the same problem.. The carried switched his normal SIM to USIM.. and it started working.. could this be a valid issue?
try this.
cool_sid007 said:
I am in a fix here!!! Since long I have been facing this problem wherein, whenever I switch to 3G/4G mode, my phone looses network forever.. It seems to work perfectly fine in 2G mode.. I tried everything.. playing with radios, factory resetting and all the other help that I could get but in vain. I thought it is a hardware issue and since mine is an imported one, and I don't have warranty, I was avoiding to take it to a repair centre.. A week back, I went to Malaysia for a trip, and as I put a local SIM, my 3G starts working perfectly fine... I thought it could be a radio issue and as I came back to India, to my surprise my old local SIM was working fine in 3G mode yet again!!! I thought somehow my problem was sorted!!! It worked for 2 days and it is back to the old problem now.. no 3G whatsoever!!!! Please help me guys!!!
Click to expand...
Click to collapse
enter to this menu *#*#4636#*#*
go to phone information
and change the option lte/gsm to WCDMA prederred.
and dissable data and enable it again.
one question are you s-off?
might sound crazy my question.
If you are not s-off flash the boot.img of the rom again
Tried it bro.. doesn't work.. yes i am s-off.. thats how I could switch radios as well..
cool_sid007 said:
Tried it bro.. doesn't work.. yes i am s-off.. thats how I could switch radios as well..
Click to expand...
Click to collapse
If changing the settings in Phone Info did not help I have to agree that you need a different sim or different APN settings.
The same SIM works with the same APN in other phones... and even if it was an APN issue then the data would have been a problem.. But i don't even get network in 3G..
Sent from my HTC One_M8 using XDA Free mobile app
No help??
cool_sid007 said:
I am in a fix here!!! Since long I have been facing this problem wherein, whenever I switch to 3G/4G mode, my phone looses network forever.. It seems to work perfectly fine in 2G mode.. I tried everything.. playing with radios, factory resetting and all the other help that I could get but in vain. I thought it is a hardware issue and since mine is an imported one, and I don't have warranty, I was avoiding to take it to a repair centre.. A week back, I went to Malaysia for a trip, and as I put a local SIM, my 3G starts working perfectly fine... I thought it could be a radio issue and as I came back to India, to my surprise my old local SIM was working fine in 3G mode yet again!!! I thought somehow my problem was sorted!!! It worked for 2 days and it is back to the old problem now.. no 3G whatsoever!!!! Please help me guys!!!
Click to expand...
Click to collapse
did you solve the problem?? since am facing the same problem and i don't know how to solve it
quican said:
did you solve the problem?? since am facing the same problem and i don't know how to solve it
Click to expand...
Click to collapse
Post as much detail about your problem, if you want to get help.
What version M8?
Is it modded (custom ROM, root, s-off) or stock?
What region/carrier, and more importantly, what bands used for 3G and LTE?
What does it say for OS number in bootloader screen?
You've verified the SIM works for 3G and/or LTE on another device?
redpoint73 said:
Post as much detail about your problem, if you want to get help.
What version M8?
Is it modded (custom ROM, root, s-off) or stock?
What region/carrier, and more importantly, what bands used for 3G and LTE?
What does it say for OS number in bootloader screen?
You've verified the SIM works for 3G and/or LTE on another device?
Click to expand...
Click to collapse
The SIM does work for 3G and LTE on other devices,
its modded with:
(***RELOCKED***
M8_UL_CA PVT SHIP S-OFF
CID-11111111
HBOOT-3.19.0.0000
RADIO-1.29.213311491.05G
OpenDSP-v51.2.2-00593-M8974_FO.1015
OS-6.12.1540.4
eMMC-boot 2048MB
Nov 27 2015,01:21:29.3
)
in Tanzania and my carrier is (Airtel with bands 900, 1800 and 2100) and (TTCL which is 4G LTE)
quican said:
OS-6.12.1540.4
in Tanzania and my carrier is (Airtel with bands 900, 1800 and 2100) and (TTCL which is 4G LTE)
Click to expand...
Click to collapse
According to the following webpage, the 3G band used by Airtel is Tanzania is 2100 MHz (900 and 1800 listed are only for GSM/2G): http://www.worldtimezone.com/gsm.html
As this webpage also lists " 4G LTE TTCL" I will have to assume you got the info from the same or similar website. And that doesn't tell us what band your carrier uses for LTE/4G.
The 3G band 2100 MHz is supported by your current firmware. Make sure you have properly input the APN info for your carrier in the phone's settings.
LTE is trickier. Even with the proper band support and APN, you might not get LTE using an M8 version not intended for your region/carrier. But 3G should be possible.
I did but the 4G symbols is showed on the network bar once in a while. And it does not last long when it shows up!
For the TTCL sim card i can not access the network at all since it does not allow 2G services!
The same here. I face the problem yesterday =)) LTE icon show for the first time and then after a reboot, 3G and LTE signal gone forever =)) Now Edge only. Trying to fix it.

No network when making or receiving calls

Hello,
My motherboard went to heaven and I bought a lg g3 with a broken screen from a local ad site. Switched motherboards and everything was fine until I tried to make a call as it losses the network and does not allow me to make or receive calls. Oddly enough I have 4g data and everything else works.
When I switch network to only 2G or only 3G the phone losses the network and I have no data. If I put "automatically switch between 2G, 3G, 4G" I have 4G data but I can not make or receive calls.
I installed xposed and imei changer thinking that I had bought a stolen phone, changed the imei number and still no network.
It does not matter if I am on stock or any other rom. I thought about flashing different modems but I guess it would be wasting my time.
If anybody could help I´d be grateful.
fluffier said:
Hello,
My motherboard when to heaven and I bought a lg g3 with a broken screen from a local ad site. Switched motherboards and everything was fine until I tried to make a call as it losses the network and does not allow me to make or receive calls. Oddly enough I have 4g data and everything else works.
When I switch network to only 2G or only 3G the phone losses the network and I have no data. If I put "automatically switch between 2G, 3G, 4G" I have 4G data but can not make or receive calls.
I installed xposed and imei changer thinking that I had bought a stolen phone, changed the imei number and still no network.
It does not matter if I am on stock or any other rom. I thought about flashing different modems but I guess it would be wasting my time.
If anybody could help I´d be grateful.
Click to expand...
Click to collapse
I assume you have checked the APN settings, the motherboard matches your variant and you reflashed the modem. Can you test it with another SIM card? Maybe the new "motherboard" is also faulty...
Saratoga79 said:
I assume you have checked the APN settings, the motherboard matches your variant and you reflashed the modem. Can you test it with another SIM card? Maybe the new "motherboard" is also faulty...
Click to expand...
Click to collapse
I have now checked APN settings and they are fine but I dont see why they would affect the problem, as I said I do have data (4G), the motherboard matches my variant and I have now reflashed the modem (just in case) and it does not work (thanks for the suggestion). I have tested it with another sim card, no success.
Any more ideas?

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