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[Q] Problem : No call, no SMS, but 3G ok

Hello, I have a big problem with my Nexus S Eur (I9023 SLCD)
I bought it used but almost new, and no bill…
The phone, not modified, worked fine for 3 months. (2.3.4 GRJ22)
But one day I could no longer use the calls and SMS, while the Internet connection (3G) worked fine.
The majority of other sim cards are not properly recognized, but mine yes, it recognize the PIN code, the network (Numericable, a French MVNO), and correctly read the APNs. I can go on the net with data connection, but no call, no sms… (No MMS in the subscription I chose)
I tried to restore it with ODIN like I read here, it worked fine, but same problem.
I tried Custom ROM, custom Kernels, I tried ALL the radios of the I9023, no change…
When I call, no error it just hangs up the phone.
SMS, it says sms was not sent
The only one error I can read is, when I want to consult the call forwarding settings : “Network or SIM card error”
Any idea?
If the phone is a stolen one, and if the IMEI is blacklisted (3 months after?!?), is it normal that I still use the 3G connection?
The simcard work fine in my old phone
Thanks !
PS : sorry for my english, I do the best I can

No idea?
Maybe Hardware problem?

is the phone rooted?
try the *#*#3646#*#* to select your correct baseband settings.

When the problem started, the phone was rooted
After, I tried rooted and unrooted
With the 4636 I can access to the list of the baseband settings (now GSM/CDMA Auto (PRL) ), but if I change it (GSM only for exemple), it is not saved.... It doen't say anything, but if i quit the 4636 screen and return to it, it is GSM/CDMA Auto again....

Emergency calls only and other related network issues on new android device

I've had this samsung galaxy ace s5830i (my first android) for 4 of the most frustrating months now.
The problem first started with the phone being stuck on EDGE regardless of signal strength. I tried flashing it with new roms but had zero success. I tried manipulating the menu under *#197328640# but that led to a dead end as well. Every time I tried to select WCDMA only, the network bar changes to a "circle and cross" type of thing. I tried to dial *#7465625# to check for network locks but everything reads off i.e. no locks of any kind. Finally, I tried to select a new radio band by dialing *#4636# but that operation crashes a "com.android.phone" everytime.
So in summation, service mode changes don't help and flashing the rom doesn't help.
Recently, I to switched one of the strongest networks available (other than the one I'm on) but the phone is stuck on "emergency calls only" mode. When I try a manual network search and select the network to which the SIM card belongs, I get and error telling me that the SIM card can't register onto the network.
I have used these SIM cards on nokia phones and other samsung galaxy ace devices and have experienced none of the problems listed above, even in remote areas. The support guys of my network say nothing is wrong with my account.
So there you have it. Is there anything left that I can try?

Network Not available ON my N 8000

Hello guys,
My n8000 seemed couldn't connect to a network.
It has happened since 6 months ago.
The signal shown a full bar, and the SIM toolkit application of the sim card that i inserted is appeared, and also in network setting it show the APN of my network
When i search the network, various network poped up, and i can select the network just fine.
But when i tried to call or do something network related, it always shown "Network Not Available"
I have switched SIM card to various provider but it doesnt change anything
I use
Gnabo v7 ROM,
Android ver. 4.4.2.
And boeflla kernel
My tab has history of "hard modding" in which i used to mess with the efs, broadband and imei number.. but it had been restored
Now my IMEI number is 00499xxxxxx
I think the problem is from software/system related, not the hardware problem.
Is there anyway i can check which component is messed up?
And is there anyway i can fix my problem?
Sorry for my bad english
thanks
Sent from my GT-N8000 using Tapatalk

First I would check if the IMEI is possibly black listed, maybe here: http://www.imeidetective.com/englishaparativbazi.php
If not I would go back to stock and check if network works.

getting signal with now sim card installed ?

as the title says , am getting a network signal in the status bar with no sim card installed in the device , where it used to show a stop or block sign before when there is no sim installed , don't know when it started but i have noticed it a week ago , and am on the 5.1.1 update ,
what i have tried so far :
1 - reset the device from the setting .
2 - reset the device with samsung smart switch for windows ( which download the latest firmware for the device & install it ) .
3 - installed the factory firmware with odin , and got the device to axiom telecom which is my warranty service provider , and the told me the have changed the whole motherboard , & after telling them the issue is still there , they showed me another s6 with no sim and there is signal and told me that this behavior is normal ( which i don't think so ) .
4 - contacted samsung directly by phone & email , and they told me to reset the device or send it to service ( which i already did ) .
so , is this behavior really normal ? are any of you guys getting this ?
my device : SM-G920F
country : Saudi Arabia

no its not normal
if you type *#06# you gonna find IMEI become 3500000000006/01
if it is then you cant make calls or send sms ( not registered on network )
its the same problem like me i don't know where this come from but we need some one to give us backup the EFS folder. to restore it back to the phone SM-G920F
please if some one can help us thank you

tazaga said:
no its not normal
if you type *#06# you gonna find IMEI become 3500000000006/01
if it is then you cant make calls or send sms ( not registered on network )
its the same problem like me i don't know where this come from but we need some one to give us backup the EFS folder. to restore it back to the phone SM-G920F
please if some one can help us thank you
Click to expand...
Click to collapse
no , it seem we are having different problems ,
*#06# reveals normal IMEI ,
and i can make & receive phone calls & sms if i install a sim card ,
try resetting yours to stock ,
other than showing a signal with no sim card installed the phone is fine & doesn't have any problems .

Speculation- you'd need emergency service call? I would assume that it's allowed to connect to network for that and not have phone disabled?
More speculation- your being spied on...
-Spy
It's only a display icon. You aren't able to still make a regular call without the sim? If it ain't broke don't fix it.
But to ease your mind just check the network status in your settings. Should say what connected to.
Surely it does have to do with the update itself if your phone still functions as normal.
I'm sure there is a network status with the super secret spy codes that you enter on your dial pad. You know the #secretrandomnumber#* codes...
Sent from my SM-G920W8 using XDA Premium 4 mobile app

space_eyes said:
Speculation- you'd need emergency service call? I would assume that it's allowed to connect to network for that and not have phone disabled?
More speculation- your being spied on...
-Spy
It's only a display icon. You aren't able to still make a regular call without the sim? If it ain't broke don't fix it.
But to ease your mind just check the network status in your settings. Should say what connected to.
Surely it does have to do with the update itself if your phone still functions as normal.
I'm sure there is a network status with the super secret spy codes that you enter on your dial pad. You know the #secretrandomnumber#* codes...
Sent from my SM-G920W8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
it could be there for emergency calls ,
in terms of being spied on , ha ha ,i don't think so , the service center changed the entire motherboard which include the eMMC with it's whole partitions .
the sim card status in the settings says Not Available for everything , and yes i can't make calls nor sms without the sim ,
but you still didn't answer my question : do you get this when you remove your sim ?

no one with a similar problem ??

I've seen it on lots of Samsung phones. It's simply a signal for emergency calls. You have to be able to make emergency calls with or without a Sim and that's telling you how much signal you have.
Seriously people this is pretty simple and no conspiracy.
You only get a circle with a line through if you have a sim card installed that is blocked from the network or the phone is stolen / blocked etc.

Jonathan-H said:
I've seen it on lots of Samsung phones. It's simply a signal for emergency calls. You have to be able to make emergency calls with or without a Sim and that's telling you how much signal you have.
Seriously people this is pretty simple and no conspiracy.
You only get a circle with a line through if you have a sim card installed that is blocked from the network or the phone is stolen / blocked etc.
Click to expand...
Click to collapse
good to hear ,
what made me think it isn't ordinary thing is that the service center didn't know about it & thought it was a problem ,
thanks a lot .

This was done on last update Samsung gods thought we needed to know how much of a signal we had for emergency calls

Having the same problem with my samsung galaxy s6 SM-920F. showing bars on the signals even without sim. not connecting to network operator as well. showing Disconnected status in SIM status from About.
Tried updating the software even downgrading, factory reset and wiping cache but nothing worked.

Found this thread when looking for an answer to this question. In my case, it is a tablet that hasn't even got a sim option but still has the mobile network signal showing, even when airplane mode is switched on. Just worry it is eating some of my battery life. Any ideas?

I am also getting same problem.
There is no sim card inserted in my phone but still it shows the network bars.. Your And my problem is same.

There, an actual answer. Guess I should add it here since I wondered the same thing
a sim card has nothing to do with the transceiver system of the phone. its literally a "passkey" it is your authentication to USE that network. ie you can always SEE the network you just not allowed to "use it" without permission hence the simcard.
Click to expand...
Click to collapse

[Help Thread] no service or emergancy call only after switching bands.

Hello everyone !
Before you read here is the specs and what I tried but didn't work to solve this issue :
Model : galaxy s5 (klte )
OS : Havoc OS 3.7 latest
Root : magisk21.1
Solutions I tried :
1 - restarted the phone .
2- clear factory reset and reinstalling the ROM.
3- checking my IMEI and its fine doesn't need repairs *#06#.
4- switched Sim cards and tested other Sim cards still no results .
5- return the official android OS still no use .
6- any other obvious solutions didn't work such as backup and restore my IMEI/EFS , airplane mod .
7- choosing network operator in the settings results a crash while searching so I can't choose manually and only be able to let it at automatic .
so lately I just bought a 4g Sim card and I know the galaxy s5 support 4g bands as I inserted the SIM it worked normally yet I wanted to switch the band to LTE so obviously I went to *#*#4636#*#* and switched bands so I can see which one would work yet suddenly while switching a couple of times the signal stopped showing and emergency calls only even though it reads the Sim card .
i tried to manually chose network operator but it crash's while it search's for it no matter what OS I install even in original so if anyone knows a command line to manually chose a network operator that would be appreciated.
Anyone know what to do ?

Gunnerpew said:
Hello everyone !
Before you read here is the specs and what I tried but didn't work to solve this issue :
Model : galaxy s5 (klte )
OS : Havoc OS 3.7 latest
Root : magisk21.1
Solutions I tried :
1 - restarted the phone .
2- clear factory reset and reinstalling the ROM.
3- checking my IMEI and its fine doesn't need repairs *#06#.
4- switched Sim cards and tested other Sim cards still no results .
5- return the official android OS still no use .
6- any other obvious solutions didn't work such as backup and restore my IMEI/EFS , airplane mod .
7- choosing network operator in the settings results a crash while searching so I can't choose manually and only be able to let it at automatic .
so lately I just bought a 4g Sim card and I know the galaxy s5 support 4g bands as I inserted the SIM it worked normally yet I wanted to switch the band to LTE so obviously I went to *#*#4636#*#* and switched bands so I can see which one would work yet suddenly while switching a couple of times the signal stopped showing and emergency calls only even though it reads the Sim card .
i tried to manually chose network operator but it crash's while it search's for it no matter what OS I install even in original so if anyone knows a command line to manually chose a network operator that would be appreciated.
Anyone know what to do ?
Click to expand...
Click to collapse
You may need to contact customer support for your carrier, they may have to fix it in their network.

Droidriven said:
You may need to contact customer support for your carrier, they may have to fix it in their network.
Click to expand...
Click to collapse
The thing is about my carrier that they have a terrible customer service in here as if it was almost non-existing so I'm left all alone to deal with the problem plus there aren't any customer service for Samsung or any other external fix center for smart phone that's why I had to learn things on my own.

Gunnerpew said:
The thing is about my carrier that they have a terrible customer service in here as if it was almost non-existing so I'm left all alone to deal with the problem plus there aren't any customer service for Samsung or any other external fix center for smart phone that's why I had to learn things on my own.
Click to expand...
Click to collapse
If you can't get back into that dialer menu and if flashing the firmware isn't fixing it and if booting into recovery and factory resetting the device aren't working, I'm not sure if there is anything you can do.