Hi folks,
This is my first post so if I've done anything wrong please let me know. I think I'm experiencing quite a unique issue.
I have a Samsung Galaxy Nexus (Maguro) phone on O2-UK.
I'll try and summarise my issue
Currently I cannot make calls or send messages but can use 3g on the device.
When I put my girlfriends EE sim into the phone I can make calls and send texts
When I went to France with my O2 sim I could make calls and send texts
When I put my O2 sim into another device I can make calls and send texts
Whenever I try to make a call it states 'mobile network is unavailable' and when I try to connect to O2-UK in settings it states 'cannot connect at this time. please try again later'. The phone states emergency calls only but on the status bar it looks like it has a network connection and 3g can be used.
I've tried phoning O2 to setup the APN settings
It all started when I upgraded to CM12.1 from CM11. Although I have tried downgrading to the previous version and I am still having the same issue. I've tried wiping everything on the phone numerous times.
Is there anything else I can try, something I can wipe or a setting I can change?
Any help would be much appreciated!
If I can't sort it I'll grudgingly have to buy a new phone which is annoying because it only seems to have an issue with O2 in the UK
I had this when I upgraded from cm11 to cm13, all I did was turn on airplane mode for 10 seconds and switch it back on.
I wish it was that easy for me!
It seems that my phone has been blocked on my network (O2) since updating. Is there any way that an IMEI number can be involuntary changed during a root and installation of ROMs/radios?
I know this may be a very stupid question but my provider seems to think the IMEI number is strange, even though I purchased the phone from them in November 2011.
When I phone O2 their system says my IMEI number is different from when I type in *#06#.
Has anyone experienced this?
wattereus said:
I wish it was that easy for me!
It seems that my phone has been blocked on my network (O2) since updating. Is there any way that an IMEI number can be involuntary changed during a root and installation of ROMs/radios?
I know this may be a very stupid question but my provider seems to think the IMEI number is strange, even though I purchased the phone from them in November 2011.
Click to expand...
Click to collapse
Hmmm, you stated that the card worked in other phones right? I am pretty sure you stated that other cards also worked so to be honest, this is something you have to phone them up seriously about.
Yes when I put my girlfriends EE sim into the phone it works fone. Also when I was in France my sim card worked fine, I'm guessing because it was using other networks.
It gets even stranger, when I type *#06# into my phone I get an IMEI number. I used an online website to check the status of the IMEI number and it stated that my Samsung Galaxy Nexus (which I've owned from new) is actually an iPhone....
wattereus said:
It gets even stranger, when I type *#06# into my phone I get an IMEI number. I used an online website to check the status of the IMEI number and it stated that my Samsung Galaxy Nexus (which I've owned from new) is actually an iPhone....
Click to expand...
Click to collapse
I think we just found the source of our (well technically, your problem) problem. Now, do you have a nandroid backup or something that you are willing to restore to? I will look online for how to restore the imei.
Related
Hi all. Just after a little help if possible.
Bought a 2nd hand S2 and was told it was locked to Virgin, before I bought it I made sure I saw the buyer make a call with the Virgin SIM on the phone.
I downgraded from ICS to 2.3.5, rooted the phone and used unlock tool from Market to unlock the phone. Tried several SIM cards in the phone, but I cannot connect to any mobile networks. In Phone Status, it shows phone number, signal strength etc but when I try and make a call is shows ‘Not Registered on Network’
I went out and bought a PAYG Virgin SIM card as I thought the unlock may not have worked correctly and exact same thing happens. Put the Virgin SIM in my unlocked HTC Desire and works fine. So, its deffo the phone that has the problem. I checked the IMEI number online to see if it had been blocked but it looks ok.
Any thoughts??
Thanks in advance.
Hi
A few things to check/try -
Does the IMEI number displayed by typing *#06# into the dialer match the IMEI number on the back of the phone (Under the battery)?
When you put a sim card in (other than Virgin) do you get a message from the phone asking for a network unlock code?
Does the network name of the Sim card appear in the status bar?
Which app did you use to unlock the phone? I've used Galaxy_S unlocker several times without any issue. (I install a ginger bread rom first, then insecure kernel, then root, then run Galaxy_S Unlock)
SMORG00 said:
Hi all. Just after a little help if possible.
Bought a 2nd hand S2 and was told it was locked to Virgin, before I bought it I made sure I saw the buyer make a call with the Virgin SIM on the phone.
I downgraded from ICS to 2.3.5, rooted the phone and used unlock tool from Market to unlock the phone. Tried several SIM cards in the phone, but I cannot connect to any mobile networks. In Phone Status, it shows phone number, signal strength etc but when I try and make a call is shows ‘Not Registered on Network’
I went out and bought a PAYG Virgin SIM card as I thought the unlock may not have worked correctly and exact same thing happens. Put the Virgin SIM in my unlocked HTC Desire and works fine. So, its deffo the phone that has the problem. I checked the IMEI number online to see if it had been blocked but it looks ok.
Any thoughts??
Thanks in advance.
Click to expand...
Click to collapse
Check ur imei no dial *#06#
verify that imei no with the one beneath ur battery
if it same then try flashing the stock rom again and root it and try unlocking again using the unlock soft from play store
Yes, the IMEI number matches so no problem there. Have been onto several free IMEI check sites to see if the IMEI number is blocked and it shows as not being blocked. How reliable these sites are I do not know...
No, no unlock message comes on. However, I locked the phone again when rooted and put the Virgin SIM in, which it should be locked to so should work, and I got a SIM unlock message? So, when the phone is locked, it does ask for unlock code, when unlocked using the app, lock code doesn't appear.
I do not get the name of the network in the status bar. When I look at the phones status, it does show a signal strength, and I do sometimes get signal bars but when I try and use the phone I get 'Not registered on network'
I used Galaxy_S app and did everything that you have done!
Have tried flashing stock rom, rooting and unlocking and nothing seems to work.
Worried that I may have bought a nice, expensive media player...
If your IMEI matches up with the one under the battery then I really don't know why you can't get a signal. Maybe someone else on here will give you some better advise. It sounds to me like you did everything right. The obvious thing would be if the phone is on the blacklist (stolen phone, or reported as stolen, 2 different things!). I wasn't aware of any sites that can tell you if the phone is reported as stolen so can't comment on how accurate they are.
Hope you get it sorted, it's the best phone out there at the moment so would be a shame if you can't make calls on it.
have you tried with diferent modem? or diferent rom?? or both at the same time?
for the modem try KI3 or KI4, seems to work pretty fine for almost everyone..
have you tried
hi have you tried going to
settings>wireless and network>mobile network>network operators
and checking the settings in there are set to autoselect network.
if this does'nt work +1 for all posts below.
hope it does.
also not sure but i think sim lock is set in security settings and the pasword for unlocking is stored on the sim that password was put on. anyone feel free to correct if this statement is wrong. many thanks
A while back one of my customers found a T-Mobile Samsung Galaxy S2 at a bus stop which she handed in at the local police station. Last week she went back to see if it had been claimed and it had not so the police released the phone to my customer to keep as her own property.
She was aware that it was blocked but wanted to give it to her child to use as an android game device but when she told me about it I said I would have a look at it for her to check it was defiantly blocked.
On trying all network SIM cards I could only get the 'Emergency calls Only' notice. I did a Checkmend report and the device was still listed as stolen and blocked (the police have given her entitlement paperwork for the phone which I have seen) so I guessed it would be out of the question ever being able to use it as a phone again.
I decided to root the phone anyway and install a CM stock ROM. I then also installed the 'Galaxy S Unlock' APK and zero'd out the lock codes. I then tried all the SIM cards again with the same results as before.
After some browsing on the internet I download an APK called 'HC-kTool' and installed it. I then backed up my kernel and EFS folder to my SD card before hitting the advanced key and deleting my current installed EFS folder.
I turned off the phone, wrote down my IMEI number from behind the battery and inserted a Vodafone SIM card.
When the phone rebooted I got a full Vodafone signal and rang my home number, and it rang!
I then dialled *#06# and noticed my IMEI number has changed to something entirely different.
The phone has been connected over an hour now, I have not tried any other SIM as yet but I don't doubt it is unlocked and working on all networks now.
I read something briefly about T-mobile using a non-standard (I think) network system and deleting the EFS folder has the Samsung software revert it back to a non-T-mobile modified one. this could be totally wrong though...
Can anyone throw some light on this?
Is the imei 04999010....?
Sent from my GT-I9100 using Tapatalk 2
Most likely a silly network that doesn't block the dummy Samsung "default" IMEI...
MemoryController said:
Is the imei 04999010....?
Click to expand...
Click to collapse
Indeed it is. I thought that IMEI wasn't supposed to work to make calls?
Odder n odder!
Yeah had the dummy imei too and didnt notice until 2 weeks or so had passed, thankfully i had a backup from a year or so
Sent from my GT-I9100 using Tapatalk 2
MemoryController said:
Yeah had the dummy imei too and didnt notice until 2 weeks or so had passed, thankfully i had a backup from a year or so
Click to expand...
Click to collapse
So are there any negatives to using the dummy IMEI then? Also, if I edit the hex of the nv_data_bin files from the backup of the original IMEI can I change it to anything I please?
I dont think you can do that as it would be stupid from samny's side but try(after taking an efs backup). AFAIK no negatives except that some providers will block this IMEI
Sent from my GT-I9100 using Tapatalk 2
MemoryController said:
I dont think you can do that as it would be stupid from samny's side but try(after taking an efs backup). AFAIK no negatives except that some providers will block this IMEI
Click to expand...
Click to collapse
I have dumped the efs of the default Samsung and will compare the hex in hex workshop against the original dump. I'm guessing the main file here being the nv_data_bin.
While it is good news for my customer that this ex-stolen phone now works on Vodafone I don't think it is very responsible of Vodafone to allow default IMEI numbers to connect to their network. If I had my phone stolen I wouldn't like to think that the thief could potentially use it again.
Yes mine too was allowed on Vodafone after getting the dummy IMEI
Sent from my GT-I9100 using Tapatalk 2
I remember reading some time ago that although illegal in allot of country's if you were able to change a phones IMEI number so as to connect to a network it would still not be a worthwhile effort as if the fake IMEI was the same as that on another phone you would get the other phones text messages and calls mixed up with yours.
I always had doubts about that as it made more sense that calls and texts would be sent to the phone broadcasting the correct SIM number ID. But I was assured by people much more experienced in this stuff than I that the IMEI was a more secure method of ID'ing the correct device to send secure DATA to.
So if this is true, surely that would mean I am the only person on the planet using the default Samsung IMEI number as I have had no odd text messages or phone calls since I got this phone. (I am now the owner as I swapped it for an 8GB iPod Touch!)
Anyone can un-confuse me here!
imei change
hi im a noob did u yave any luck with the chang of inei? i have a phone that i thot i lost over 2 years ago but its been blocked i tried all the things u said the imei changed but still wont let the o2 card register on the network any more help you could offer? its a samsung galaxy s2 it is locked to the 3 network i have rooted it
sparkyuiop said:
A while back one of my customers found a T-Mobile Samsung Galaxy S2 at a bus stop which she handed in at the local police station. Last week she went back to see if it had been claimed and it had not so the police released the phone to my customer to keep as her own property.
She was aware that it was blocked but wanted to give it to her child to use as an android game device but when she told me about it I said I would have a look at it for her to check it was defiantly blocked.
On trying all network SIM cards I could only get the 'Emergency calls Only' notice. I did a Checkmend report and the device was still listed as stolen and blocked (the police have given her entitlement paperwork for the phone which I have seen) so I guessed it would be out of the question ever being able to use it as a phone again.
I decided to root the phone anyway and install a CM stock ROM. I then also installed the 'Galaxy S Unlock' APK and zero'd out the lock codes. I then tried all the SIM cards again with the same results as before.
After some browsing on the internet I download an APK called 'HC-kTool' and installed it. I then backed up my kernel and EFS folder to my SD card before hitting the advanced key and deleting my current installed EFS folder.
I turned off the phone, wrote down my IMEI number from behind the battery and inserted a Vodafone SIM card.
When the phone rebooted I got a full Vodafone signal and rang my home number, and it rang!
I then dialled *#06# and noticed my IMEI number has changed to something entirely different.
The phone has been connected over an hour now, I have not tried any other SIM as yet but I don't doubt it is unlocked and working on all networks now.
I read something briefly about T-mobile using a non-standard (I think) network system and deleting the EFS folder has the Samsung software revert it back to a non-T-mobile modified one. this could be totally wrong though...
Can anyone throw some light on this?
Click to expand...
Click to collapse
the donkey said:
hi im a noob did u yave any luck with the chang of inei..:
Click to expand...
Click to collapse
As far as I know the default Samsung IMEI number will only work on the Vodafone network. If you have rooted your S2 then there is an app in the Google Play store that will unlock your phone to all networks. Search for 'Samsung Unlock' and you will find it. If not there are plenty of ways to unlock it for free that you can find here on XDA.
I'm pretty sure you won't get it working on any other network without changing the IMEI which is incredibly difficult, not worth the cost of the equipment you would need and of course illegal in most country's carrying a very real prison sentence. XDA and other cell phone development communities will rightly not tolerate IMEI changing discussions and almost always permanently ban members should they attempt it so that is as much as I will discuss that!
Another thing I found recently was a company offering to 'De-Blacklist' phones to certain networks that were on the UK blacklist. At first I thought this must be illegal as if it wasn't it would make a mockery of the entire blacklisting principle, i.e prevention of crime. However more and more companies are offering this service and nothing seems to be preventing any of them from doing so. There are two UK based phone unlocking / modding businesses with a huge reputation online that are also doing it now too.
If anyone knows what that is about please enlighten me. No amount of probing I did had any of the companies reveal any of the methods to me!
I had an iPhone 4 that was IMEI blocked (found in a skip by a charity shop - checkmend reported not stolen) de-barred to 'EE / Orange' 5 days after paying about £50 to http://www.beijingiphonerepair.com/store/#!/~/category/id=4425106&offset=0&sort=normal
IMEI
If you were not cautious enough and you did not saved your efs directory before you made changes or ROM updates to your phone, then its possible that your phone "forget" your IMEI. So if you need to re-write your ORIGINAL IMEI back to that phone that its belong to, then its not a crime!!! There is an online program that can do that for around 4 EUR, 5-6 USD. If you are a half experienced browser user, you can find it by searching the keywords.
Although there is an easier way that you go to your provider and ask them to restore your phone IMEI, they can do that for you. If your wise enough, you put back your Original ROM, and zero the counter of ROM changes. As here in XDA you can find these methodes I wont give you any links, you can find it by yourself.
So, changing the IMEI is illegal in many countries but put back the original IMEI to the phone where it belongs is not!
UFF
To the OP.
Did you experience loss of functionality at all?
Someone i know followed what you did on a barred s2.
It now connects to virgins network but she can no longer switch on Bluetooth.
It tries to start then Bluetooth flicks over to off again.
Looking in phone details reveal that Bluetooth address is listed as unavailable.
Everything else seems to work fine.
sheffieldlad said:
To the OP.
Did you experience loss of functionality at all?
Someone i know followed what you did on a barred s2.
It now connects to virgins network but she can no longer switch on Bluetooth.
It tries to start then Bluetooth flicks over to off again.
Looking in phone details reveal that Bluetooth address is listed as unavailable.
Everything else seems to work fine.
Click to expand...
Click to collapse
Quick update, my friend tells me virgin seems to have blocked the imei now.
Recently bought a second hand S3 on the UK three network and used a unlock code as on t-mobile/orange. It was working fine but recently it stopped sending and receiving calls and texts. Data usage is fine. Not sure when this happened as mainly use it for data as have a works phone. Can remember doing a software update (think to jelly bean) recently but couldn't say whether its started after that. Have used my cut down sim in the wifes S3 and it works okay and put her sim in miner and that has same issue. When I try to call it immediately ends call and texts just fail. Have tried setting to network manually both 2g and 3g and auto, sometimes it say cant register and other times it does but when call ends it then seems to change to another available network. Started to think the imei may have been blocked but wouldn't expect data to work. Anyway rang t-mobile and they said everything looks okay their end and the imei is not black listed but not sure how they could tell that. Said the issue must be with my phone. Have emailed samsung to see what they say but not to hopeful with it being a second hand phone. The bars on the signal seem okay too.
Anybody got any idea's on what to try or do as its currently an expensive data only device. :crying:
Have already tried a factory reset.
hardyp said:
Recently bought a second hand S3 on the UK three network and used a unlock code as on t-mobile/orange. It was working fine but recently it stopped sending and receiving calls and texts. Data usage is fine. Not sure when this happened as mainly use it for data as have a works phone. Can remember doing a software update (think to jelly bean) recently but couldn't say whether its started after that. Have used my cut down sim in the wifes S3 and it works okay and put her sim in miner and that has same issue. When I try to call it immediately ends call and texts just fail. Have tried setting to network manually both 2g and 3g and auto, sometimes it say cant register and other times it does but when call ends it then seems to change to another available network. Started to think the imei may have been blocked but wouldn't expect data to work. Anyway rang t-mobile and they said everything looks okay their end and the imei is not black listed but not sure how they could tell that. Said the issue must be with my phone. Have emailed samsung to see what they say but not to hopeful with it being a second hand phone. The bars on the signal seem okay too.
Anybody got any idea's on what to try or do as its currently an expensive data only device. :crying:
Have already tried a factory reset.
Click to expand...
Click to collapse
If it's not your imei number. Did you have a backup of your efs folder?
Throwing out of the window from my flying Ferrari killer S3 driven by a proud omega team member
Chris_84 said:
If it's not your imei number. Did you have a backup of your efs folder?
Click to expand...
Click to collapse
Didn't have a backup of anything, why? One thing I have noticed is that the sim card doesn't click into the slot. compared it against the wife s3 and the sim card doesn't go as far down as if something is blocking it. Tried my sim in the wifes s3 only putting it in the same distance and it worked fine. Anyway just in case I took some of the plastic off the bottom right up to the metal chip so it would sit in the right place not being all the way down but it still does not work. Whilst having the sim in the wifes phone I diverted all calls to my works mobile and when back in my s3 its shows as calls being diverted so it must be working up to a point. Not sure whats wrong with the sim card slot, the mechanism which you push to insert and release seems to be broken so not sure if this is the cause or just a knock on effect from taking the sim card in and out alot
.
Can the sim card slot/mechanism be replaced/fixed easily?
First of all, I'm in the US. I bought the Samsung Galaxy S II GT-I9100 (I'm in the right forum, yes?) off of ebay.
From what I remember, when I received it, it had some weird ROM that I had never heard of and can't remember the name of, along with clockworkmod recovery already installed.
I put cyanogenmod 9.1.0 on it via: [cyanogenmod's site, model galaxys2 cm9.1.0] (I can't post links yet, so I had to remove all of them).
I was using it mainly for development for a while, so I never tried to activate it on a network using a sim card, but recently I tried to do that with StraightTalk (using an AT&T sim). Nothing happened. I rebooted my phone multiple times, took the battery out, reseated the sim card multiple times, etc. Nothing is any different than before I put the sim card in (except the messages about "No sim card installed" have gone away). And in the settings, it shows that it can read the phone number from the sim. I actually talked to their support for a while and they couldn't figure out what was wrong. I tried the sim in 2 other phones and it works fine on those.
I thought maybe the problem was cyanogenmod 9, so I tried installing cyanogenmod 10 nightlies made specifically for this model from: [cyanogen's site, model i9100 cm 10 nightlies] . Same thing with that. No network connection, emergency call only, etc. I've gone through the settings, trying to change things throughout. I've tried to force-connect to AT&T's network via the Mobile network settings -> Network operators menu, but it just says it can't connect to that network. When I tried to connect to TMobile's network, it said this sim card did not allow a connection to that network.
I wanted to double check to make sure the sim was actually unlocked, but none of the magic codes ( [cduu wordpress galaxy s2 secret codes] ) work except to display the IMEI. I've checked a couple online databases to make sure my IMEI is not blacklisted, and both said it was not blacklisted.
Getting pretty much nowhere, I wanted to return it to stock, but when I read up on it, I could not figure out what to do in order to do that. I'm not very experienced with the GS II; my personal phone is the galaxy nexus. After reading up on it, there's about 100 different versions of "stock" for this phone, depending upon what country/language. I don't know where this phone is from, but the only booklet it came with was in French.
I did find the sammobile released firmware versions for jelly bean and ice cream sandwich (I9100XXLSJ_I9100OXXLS1_OXX.zip and I9100XXLPH.zip) from [sammobile's site] . I don't even know if these are technically stock though. The only one I tried to flash was the ice cream sandwich one; the jelly bean one is still downloading. When I tried to flash the ice cream sandwich one using Odin3 v1.85, it just failed. Didn't harm any of the software that was on there, so I'm guessing it found that it wasn't the right version for my hardware?
So after all this work, I'm coming up empty.
Is there anything else I can do to try to troubleshoot why I have no cell network connection at all?
Should I try to flash back to stock and if so, can anyone tell me what english-language version of firmware/software I have to flash/install to my phone to get it back to stock?
Can I provide any more information to help?
Thanks for the time.
Since you have verified that the sim card is working properly.
Then the issue is with the phone,did you check with the provider if the imei of the phone is valid or not. It maybe a blocked device because it was reported lost or stolen previously.
Cosmic Blue said:
Since you have verified that the sim card is working properly.
Then the issue is with the phone,did you check with the provider if the imei of the phone is valid or not. It maybe a blocked device because it was reported lost or stolen previously.
Click to expand...
Click to collapse
I only checked in a couple online databases and they both said it was not blacklisted. I found the IMEI issuer at imei-number .com though, and it says it was issued by BABT (British Approvals Board of Telecommunications). Is that who I would contact? I don't know how I would contact them and get a response. Other than that I don't know what carrier the phone was used under before.
If it is not blacklisted
It maybe a hardware issue in that one pins for the sim card is not making contact properly. You may need to take the phone apart to see if there is an issue with sim connection.
Would it be able to read its phone number from the sim if a pin wasn't making connection?
Under About Phone -> Status, Network is Unknown, Signal strength is -111 dBm 1 asu, Mobile network type is HSDPA:9, and the phone number is listed correctly.
Oh, one thing I didn't mention is that the device ID from "adb devices" shows up as 0123456789ABCDEF.
And I just noticed in the About Phone -> Status menu, the Serial number is "unknown." Is there something in my ROM or something that is blocking or has erased the serial number or device ID?
Any ideas?
I'm probably going to have to buy a new phone for development today, so if anyone had something to try before then, it'd be really appreciated.
Hi
i bought a htc raider from kijiji locked with rogers. the person who gave me the phone told me that it is locked with rogers so at the spot i just checked the functions like wifi etc and nothing much. after when i inserted the rogers sim card it did not recognize the sim card and still said no service. there were not signals coming and there was a cross on top of the bars. i tried it with other rogers sim card and the same problem. went to setting about phone network and every thing was disabled . i reset and hard reset but the same problem. i tried to get the imei number by pressing *#06# it just showed the letters"IMEI" but there were no numbers beneath it. i went to setting to check the imei number but nothing was mentioned there either. there was a imei number pasted on the rogers box and under the battery so i called up rogers to ask about the phone and they said it was refurbished phone and it is out of warranty so they cannot help me out.
is it a possibility that the guy tried to unlock the phone and could not do it correctly. is there any ways i can do some thing about the phone. every feature is working fine but the every thing related to calling features. its like now a ipod of android
please help me. if unlocking , unrooting is the option please tell me or paste a link to do that. if you require more information to resolve this issue please mention in the comments and i will let you guys know
thank you