Database Develop

[Q] 850mhz band broken on my phone? (''Unable to connect. Try later'' got me crazy):

Hello guys! I've been reading these forums for a long time, amazing what you guys do in here
Here is my problem: I live in México, and I traveled to USA for summer vacation, my mexican mobile phone carrier uses 850mhz (TELCEL) and when I went to USA it was using ATT's network.
So everything was working fine, but when I returned just before I was about to cross the border, it stoped working!
It has a message that says ''Emergency calls only'' where it's supposed to say ''TELCEL GSM'', so no internet, no calls, no messages.
I was using Froyo on my phone, and thought of doing a reset to restore factory settings on the phone, but it did not work :/
Then I updated my phone to Darky's Rom 10.2 (Gingerbread) and it's still not working!
When I go to Settings>Wireless and network>Mobile networks>Network operators I can see that my carrier is available to select, but when I try to, it gives me a ''Unable to connect. Try later'' msg.
It is really frustrating because I depend on my phone so much, mainly because I share my 3G connection to my laptop for school's work and stuff.
There's one weird thing though, I unlocked my phone, and placed a MOVISTAR(1900mhz) SIM card on it, AND IT WORKS!!!
But the thing is that I don't have internet on that SIM card(is prepaid and it's EDGE, not 3G), and on my TELCEL SIM card I have a contract to complete (still a year to go).
When I put my SIM card on someone else's phone, it works like a charm, but if I try to put a TELCEL (850mhz) SIM on my galaxy; just says ''Only emergency calls''
What do you guys think happened to my phone? I would really appreciate your help.

flash a new modem... one that contains more frequencies enabled.. any bell or telus will do.
UGKC1 modem should fix your problem.

It did not work, should I keep trying with other modems?

you can.. jk4 or jl2 are other modems with 850 and 1900 enabled... maybe your problem is different then I thought... but it sounds like your modem... maybe try unlocking your phone? if you can connect to wifi download sgs unlocker pro (paid app) in the market to unlock, your phone also needs to be rooted. are you using the i9000T? that may be different problem altogether...
edit: sorry I see you said it is unlocked... just doesn't sound like it...
a) modem related (ugkc1) should have fixed that
b) SIM carrier not compatible to phone (unlock phone to fix)
c) Busted SIM card, check in other phone
d) make sure phone option is set to Automatic CDMA/GSM
sounds like you checked everything I would check....
does your 3G work... make sure your VPN is setup to your carrier

maybe imei got blocked...? only way around that is to get provider/samsung to unblock

Hey have you solved this, I have the same problem

my solution
http://forum.xda-developers.com/showpost.php?p=25509654&postcount=279

Note I9220 no signal in UK problem

Hi All
I bought my galaxy note i9220 in China on 18th Aug. It is a genuine phone, NOT a clone just to note.
It was working perfectly fine when I was in China using a China Mobile SIM card.
Last Sunday I went to hongkong to catch a flight to London, and when I was in Hong kong, I changed back to my UK 3 SIM card, which again, was working OK in hongkong.
Before flight took off, I switched the phone off.
During the flight, I must have hit some button and accidently switched the phone on ( as when I landed, I took my phone out and it was “ON” with no signal).
Ever since I landed in Heathrow, I got no signals. The phone shows I can only make emergency calls.
I have tried all of the below but none worked:
1) Switching the phone off & on.
2) Take out battery (while phone was off) & SIM and put them back later.
3) Take out battery (while phone was on) & SIM and put them back later.
4) Reset to manufactory status.
When I go to Setting – Wireless & Network – Mobile Network – Search operator, I can see “3” in the list of operator, but when tried to connect to it, it said “Unable to connect to the network”.
The “3” sim worked fine in my old NOKIA phone so I don’t think it’s a problem on the SIM.
Anyone able to help? Thanks sooo much!

a suggestion..try to make sure you inserted the sim card with the bend angle facing the bottom of your phone..sometimes you insert your sim in a wrong way and this cause your problem..am not trying to be funny but it happen with quite a lot of people including me...
or Could be a fault on your phone..and these things happen..
or your sim is invalid for a reason..i suggest to get a pay as you go 3 uk sim card and try it ...or call 3 customer service and speak to one of their agents to have a look at your account ... they might send you another sim or pop in one of their stores and speak to someone about it...if nothing wrong with your account then am afraid it is a hardware issue with your phone..

Are you sure the phone is not a 4G phone?
This won't work in the UK as our Cell's are different as well.
Also: http://www.chinaphonereview.com/hdc-galaxy-note-plus-gt-n7000-i9220

scorpion100 said:
a suggestion..try to make sure you inserted the sim card with the bend angle facing the bottom of your phone..sometimes you insert your sim in a wrong way and this cause your problem..am not trying to be funny but it happen with quite a lot of people including me...
or Could be a fault on your phone..and these things happen..
or your sim is invalid for a reason..i suggest to get a pay as you go 3 uk sim card and try it ...or call 3 customer service and speak to one of their agents to have a look at your account ... they might send you another sim or pop in one of their stores and speak to someone about it...if nothing wrong with your account then am afraid it is a hardware issue with your phone..
Click to expand...
Click to collapse
The sim works fine on my old Nokia phone, and i tiredputing the SIM different ways but still no luck....anooying thins is the phone was working fine but started to give me prob. as soon as i landed UK...

santoz said:
Are you sure the phone is not a 4G phone?
This won't work in the UK as our Cell's are different as well.
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Click to expand...
Click to collapse
Got my mum called the phone provider back in CHina they said it should be ok to use in the UK.
They asked me to check my SIM freuency (or sth like this). and said as long as it is on GSM900/1800/1900MHZ, then it should work...what is that???

Try change your network settings between the options, gsm, hspa, and wcdma. Think it's settings, more, mobile networks, network mode.
Probably one of those should sort you out.

hkgrob said:
Try change your network settings between the options, gsm, hspa, and wcdma. Think it's settings, more, mobile networks, network mode.
Probably one of those should sort you out.
Click to expand...
Click to collapse
Thanks.
When i went into the"mobile networks", the phone started auto search of network.
And it returns network lists:
3
O2 (forbidden)
Vodafone (forbidden)
I understand the 2 being forbidden as im not a custmer of either O2 or VDF, but it just does not allow me even to connect to 3..grrr very anooying.....
I will try changing the settings when i get home today.

hkgrob said:
Try change your network settings between the options, gsm, hspa, and wcdma. Think it's settings, more, mobile networks, network mode.
Probably one of those should sort you out.
Click to expand...
Click to collapse
THere is no network mode in the mobile network ....how can i change the mobile network type in the SGN?

[Q] After CM9, can't use phone in another country?

Hi all --
Have had i9000 with o2 (Germany) for about 2 years. Used the phone in countries all over Europe with no problem.
Recently upgraded the phone to use CM9, and everything was fine here in Germany.
Went to Norway this week, but could not connect to any mobile network. All were rejecting me. Noticed that my IMEI was showing up as 004999010640000 -- figured that might have been the problem.
When returning to Germany, I checked my IMEI number, and it was displaying the correct number.
First off, how is that possible? I thought IMEI was what it was, and displaying the number (via *#06#) had nothing to do with the network I was/wasn't connected to.
Second -- what must I do so that I can once again use the phone when traveling outside of Germany?
Rather desperate -- thanks!!!

Really sorry to bump my own post, but I truly am desperate. I just cannot understand why I can no longer connect to a foreign network when I always could from this phone. I'm leaving for a business trip tomorrow and will be screwed if my phone doesn't work.
I'm running CM9 with baseband version I9000XXJVT, if that's any help. Do I need to flash another modem?
Is there nobody out there who can offer at least some advice and/or suggestion?
Filmbrain said:
Hi all --
Have had i9000 with o2 (Germany) for about 2 years. Used the phone in countries all over Europe with no problem.
Recently upgraded the phone to use CM9, and everything was fine here in Germany.
Went to Norway this week, but could not connect to any mobile network. All were rejecting me. Noticed that my IMEI was showing up as 004999010640000 -- figured that might have been the problem.
When returning to Germany, I checked my IMEI number, and it was displaying the correct number.
First off, how is that possible? I thought IMEI was what it was, and displaying the number (via *#06#) had nothing to do with the network I was/wasn't connected to.
Second -- what must I do so that I can once again use the phone when traveling outside of Germany?
Rather desperate -- thanks!!!
Click to expand...
Click to collapse

Filmbrain said:
Is there nobody out there who can offer at least some advice and/or suggestion?
Click to expand...
Click to collapse
This is rather odd, as IMEI does not change based on location or network, it can be blocked by Networks , meaning O2 may not have agreements with other networks for it to connect when you are roaming to some or all other networks. BUT NO Network/modem can change your IMEI, only you can corrupt it by using a custom firmware read this
So what you have mentioned makes little sense and you need to contact your sim provider, as to why you cannot connect to other networks . (could be due to a sim lock)

Agreed -- it makes no sense whatsoever. Even stranger is the fact that though I could not connect to any network, I was able to get data -- check emails, etc. Phone calls were not possible, and there was an 'X' over the signal bars in the top bar. Can't explain that either...
Prior to CM9, I had no problem connecting in Norway (I was using stock Gingerbread.) Only this time was I denied access to any and all networks.
However, at the moment I am in Denmark, and I have managed to connect to one of their networks with no problem. Let's see if it works in Finland later....
xsenman said:
This is rather odd, as IMEI does not change based on location or network, it can be blocked by Networks , meaning O2 may not have agreements with other networks for it to connect when you are roaming to some or all other networks. BUT NO Network/modem can change your IMEI, only you can corrupt it by using a custom firmware read this
So what you have mentioned makes little sense and you need to contact your sim provider, as to why you cannot connect to other networks . (could be due to a sim lock)
Click to expand...
Click to collapse

Filmbrain said:
However, at the moment I am in Denmark, and I have managed to connect to one of their networks with no problem. Let's see if it works in Finland later....
Click to expand...
Click to collapse
most likely a roaming problem that your network provider needs to address

Sorry for interference , but after your description seems to be the know lost of IMEI after flashing a custom ROM.
If you have a backup of efs ...its simply to restore IMEI...just search the forum, there are a lot of posts about restoring IMEI...
If not have that backup, then install again GB 2.3.6....make a save efs folder...and then install again CM9, i recomend last CM 9 Stable.
Greetings.

Hi Xsenman
xsenman said:
most likely a roaming problem that your network provider needs to address
Click to expand...
Click to collapse
Hey there buddy! you from the philippines?
My SGS have problems with network signal.. my father gave it to me he's in Uganda, South Africa but when i got the phone.. I don't have any signal. maybe you can help me? I am also using SMART as my simcard..
Thanks mate!

[Q] no data connection

Hello.
Having problems with my I8190N. About 2-3 days a go it suddenly lost ability to connect into internet. I can switch data connection on or off, it doesnt make any difference. I have tried to reflash various ROMs and it's all the same, no internet. I get the usual signal bars but no H/G/E marks.
It did not happen after flashing, had CM11 on it for days and I could connect Internet just fine. No carrier limitations either, I can make calls out and same SIM in my old phone can go to internet.
Should I flash the stock ROM/bootloader back and RMA it? Or is there something else I can do? (perhaps known issue and solvable on my own)
Phone is fairly new, bought it in August as brand new.

i suppose APN settings are correct?
you can try to flash another baseband to try with it, what is yours current baseband?
basebands you can find here for N version, XXAMJ ist newest and working for me...

I had the same problem a couple of days ago. It turns out that my problem was the simcard, have you tried to put another simcard in your phone and see if it works?

I have this problem, same with two phones and two SIM cards, both phones are ZTE, both problem SIM cards are on Vodafone, both phones have no problem connecting to data via t mobile sim? This leads me to believe that voda data does not work on zte phones, apn details are correct. Does anyone knowa fix?
finally sorted it........... f'd around with a few different apn's and even phoned up talktalk(same as vodafone network) who confirmed I had the right settings which I hadnt!
Found the correct settings on the geeksquad website. seems i didnt need to bother filling out some of the fields and then wham internet connection straight away!
Sent from my ZTE V967S using xda app-developers app

Network Unlocked LG Optimus 4x HD Cant Connect to New Network

Hello everyone,
I have just recently unlocked my phone because I'm currently away for business in China. However, when i got here and got a new simcard with the local mobile stores my phone cant connect to the networks at all. my phone is rooted and i am quiet a beginner regarding cellphones and what not. any help at all is greatly appreciated

Go to Settings / Mobile / Preferred Network Type.. choose different settings? Maybe you are trying to connect to a frequency that is not offered in China... or click "Choose Network Operator"

yep i did that, theres a choice of three networks, all three for China, two is GSM and one is UTMS, i tried connecting to any of the three and was not successful. automatic select network was also not successful. I bought my phone with Wind

Try inserting that sim card in another phone.Couple months ago i just lost signal with my phone was busting hed for 2 hours try to fix it and eventualy i realized my sim card was dead.

thanks for that, i have my old wind simcard and that works fine I dont think its the simcard's fault because i can still choose to select a network without the simcard in my phone, which still doesnt work.. pretty frustrating.
I was reading something about a HTC phone having the same problem and they solved it using something called a superCID or something like that. Does that ring a bell for anyone?

peterchao said:
thanks for that, i have my old wind simcard and that works fine I dont think its the simcard's fault because i can still choose to select a network without the simcard in my phone, which still doesnt work.. pretty frustrating.
I was reading something about a HTC phone having the same problem and they solved it using something called a superCID or something like that. Does that ring a bell for anyone?
Click to expand...
Click to collapse
So you bought phone from Wind, wind simcard works. You put another simcard and it doesn't work?
Your phone is locked to wind. So it won't accept any other simcard aside from wind simcard.