Android mobile network not avaliable - Android Q&A, Help & Troubleshooting

Hello. Huawei G6-u10 .Try to call get message - mobile network not avaliable.Checked IMEI but IMEI is unknown.Tried resetting(factory or hard) but during formatting data step it stuck on .Freezing.Help please.

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Solved "Your SIM card does not allow a connection to this network"

Hello Everyone, I am using Samsung Ace s5830i and since yesterday I am not able to make any calls, when I try to call a number it says "Mobile Network not available" but I can see good signal strength and I am also able to use GPRS. In the notification area it says "Emergency calls only".
I went to Settings -> mobile networks, when I try to manually select my operator(TATA Docomo, i'm from India) i get the error "Your SIM card does not allow a connection to this network".
I have removed the sim card, inserted in another mobile, it works fine. When I try try to insert a sim card of some other operator into ace I get the same errors listed above.
These are the things that I have tried.
1. Removed the sim card, battery inserted them back and restarted the phone
2. Restored my Nandroid backup
3. Complete factory reset
None of these worked and still I get the same error.
Information regarding the phone:
Model- Samsung Galaxy Ace s5830i rooted with CWM 5.0.2.6
Android version - 2.3.6
Mobile network type - GPRS
Network- TATA Docomo
Signal Strength - -90dBm
Service state - Out of service
Mobile network state - Disconnected
IMEI - Unknown
I have called Network provider they say fault is with the phone.
Any help would be really appreciated...
Anil Kiran said:
Hello Everyone, I am using Samsung Ace s5830i and since yesterday I am not able to make any calls, when I try to call a number it says "Mobile Network not available" but I can see good signal strength and I am also able to use GPRS. In the notification area it says "Emergency calls only".
I went to Settings -> mobile networks, when I try to manually select my operator(TATA Docomo, i'm from India) i get the error "Your SIM card does not allow a connection to this network".
I have removed the sim card, inserted in another mobile, it works fine. When I try try to insert a sim card of some other operator into ace I get the same errors listed above.
These are the things that I have tried.
1. Removed the sim card, battery inserted them back and restarted the phone
2. Restored my Nandroid backup
3. Complete factory reset
None of these worked and still I get the same error.
Information regarding the phone:
Model- Samsung Galaxy Ace s5830i rooted with CWM 5.0.2.6
Android version - 2.3.6
Mobile network type - GPRS
Network- TATA Docomo
Signal Strength - -90dBm
Service state - Out of service
Mobile network state - Disconnected
IMEI - Unknown
I have called Network provider they say fault is with the phone.
Any help would be really appreciated...
Click to expand...
Click to collapse
you have lost your IMEI... u'll need to flash stock firmware via odin!
see this thread for procedure!
http://forum.xda-developers.com/showthread.php?t=1840645
Re: Help "Your SIM card does not allow a connection to this network"
Just for the knowledge, what may be the reason for losing imei and does flashing stock rom retrieve my imei.
Sent from my GT-S5830i using xda app-developers app
possible reasons are many...i don't know what files did you flash? (Rom/kernel/scripts)
Cronmod script is known to have this issue...did you flash this script?
Flashing stock rom with odin will give back your imei!
What's your ROM/kernel? and what scripts did u flash?
Re: Help "Your SIM card does not allow a connection to this network"
I am using stock rom. No i didn't flash cronmod script. I'm not sure but i think problems started after installing Online Nandroid backup tool maybe it has installed some scripts, i'm not blaming the tool it is fanastic app to make nandroid backups.
Let me flash custom rom, hope problem goes off.
Sent from my GT-S5830i using xda app-developers app
js2892 said:
you have lost your IMEI... u'll need to flash stock firmware via odin!
see this thread for procedure!
http://forum.xda-developers.com/showthread.php?t=1840645
Click to expand...
Click to collapse
Thank you so much, I have flashed stock firmware using odin, now everything is working on my phone.
Anil Kiran said:
I am using stock rom. No i didn't flash cronmod script. I'm not sure but i think problems started after installing Online Nandroid backup tool maybe it has installed some scripts, i'm not blaming the tool it is fanastic app to make nandroid backups.
Let me flash custom rom, hope problem goes off.
Sent from my GT-S5830i using xda app-developers app
Click to expand...
Click to collapse
thanks for this info..it might help others too!
it's always good to keep a backup of IMEI.. Use galaxy toolbox app on Google Play!
IMEI still lost
js2892 said:
thanks for this info..it might help others too!
it's always good to keep a backup of IMEI.. Use galaxy toolbox app on Google Play!
Click to expand...
Click to collapse
hi, My IMEI is still lost and I cannot connect to the network is there another way of sorting this out
rasmutu said:
hi, My IMEI is still lost and I cannot connect to the network is there another way of sorting this out
Click to expand...
Click to collapse
You can solve your IMEI problem with the guide in this thread:
http://forum.xda-developers.com/showthread.php?t=1968360
rasmutu said:
hi, My IMEI is still lost and I cannot connect to the network is there another way of sorting this out
Click to expand...
Click to collapse
flash stock kernel and everything will be okay..!!
imei problems occurs with me everytime i flash custom kernel..!
even if u are on stock kernel, flash stock kernel again..
give it a try !!
Flashing Stock Rom did not Work but the other method worked!
srt99 said:
flash stock kernel and everything will be okay..!!
imei problems occurs with me everytime i flash custom kernel..!
even if u are on stock kernel, flash stock kernel again..
give it a try !!
Click to expand...
Click to collapse
Hi I tried Flashing the stock Rom 3 times( I even Changed the Firmware to that of a Different Region) But nothing Worked.
So I used the fix IMEI GUIDE and Now I have my IMEI back, Thanks all the same
Anil Kiran said:
Hello Everyone, I am using Samsung Ace s5830i and since yesterday I am not able to make any calls, when I try to call a number it says "Mobile Network not available" but I can see good signal strength and I am also able to use GPRS. In the notification area it says "Emergency calls only".
I went to Settings -> mobile networks, when I try to manually select my operator(TATA Docomo, i'm from India) i get the error "Your SIM card does not allow a connection to this network".
I have removed the sim card, inserted in another mobile, it works fine. When I try try to insert a sim card of some other operator into ace I get the same errors listed above.
These are the things that I have tried.
1. Removed the sim card, battery inserted them back and restarted the phone
2. Restored my Nandroid backup
3. Complete factory reset
None of these worked and still I get the same error.
Information regarding the phone:
Model- Samsung Galaxy Ace s5830i rooted with CWM 5.0.2.6
Android version - 2.3.6
Mobile network type - GPRS
Network- TATA Docomo
Signal Strength - -90dBm
Service state - Out of service
Mobile network state - Disconnected
IMEI - Unknown
I have called Network provider they say fault is with the phone.
Any help would be really appreciated...
Click to expand...
Click to collapse
Just flash everything back via Odin, settle !
leezhijiang said:
Just flash everything back via Odin, settle !
Click to expand...
Click to collapse
Refer to post 6, i have already solved the problem. Anyway thanks for the reply
Network or sim card error
Please help me guys !!!! I have Samsung galaxy Ace 3.Sometimes it works everything fine but later while calling no hearing occurs and call ends automatically.While i tried to enter additional call settings it appears a box "Network or sim card error" and in notification bar its "Emergency calls only".I tried different sim cards but the result is same.Factory reset,Hard reset nothing worked for me.
Model number: GT-S7270 (not rooted)
Android version: 4.2.2
Mobile network type: EDGE:2
Signal strength : -83dBm 15asu
Not roaming
Mobile network state: disconnected
Please reply me soon!!!!
junkYardz said:
Please help me guys !!!! I have Samsung galaxy Ace 3.Sometimes it works everything fine but later while calling no hearing occurs and call ends automatically.While i tried to enter additional call settings it appears a box "Network or sim card error" and in notification bar its "Emergency calls only".I tried different sim cards but the result is same.Factory reset,Hard reset nothing worked for me.
Model number: GT-S7270 (not rooted)
Android version: 4.2.2
Mobile network type: EDGE:2
Signal strength : -83dBm 15asu
Not roaming
Mobile network state: disconnected
Please reply me soon!!!!
Click to expand...
Click to collapse
Not a right place to get technical helps , in regards of your ACE 3 issues ( Galaxy Ace S5830i Q&A, Help & Troubleshooting)
Please make it @ proper section

[Q] Unable to use Network: “Not Registered On Network”

I am using Samsung Galaxy Chat B5330 (officially upgraded from 4.0.4 to 4.1.2). It used to work fine, but since a few days I am not able to call or send sms or use any network related services. It gives me error : "Not Registered On Network". I tried applying manual network settings. At first it gives a pop up : "Registered on Network". But as soon as I try to make a call, the same error : "Not Registered On Network".
Also I haven't yet rooted my phone.
I thought that factory reset would have been the solution to my problem, but unexpectedly , this too did not work for me. Please help.
Check if your IMEI is intact (by dialling *#06#)
If it's good, make sure it isn't a network problem or server error from your carrier itself
iamareebjamal said:
Check if your IMEI is intact (by dialling *#06#)
If it's good, make sure it isn't a network problem or server error from your carrier itself
Click to expand...
Click to collapse
i have tried checking the imei and serial number. They are fine.
Also no problem with network provider because other phones with my simcard are able to use the network.
No problem with my sim card because it works on other phones.
Also my phone is able to use simcard of other phones.

[Q] No more mobile data after 4.3(OTA) update

Hello,
I've update my samsung S3 I9300 with the 4.3 original rom (I9300XXUGMJ9_I9300OXAGMJ9_BTU and I9300XXUGMK6_I9300OXAGMK6_I9300XXUGMK6_BTU) but since that i'm not able to activate the mobile data connectivity.
The APN is well configured.
I've tried wipe cache partition and factory reset without success.
Could someone have a fix for this issue plz ?
Thanks !
sory the problem was in fact my provider... after a third call , i got someone inteligent which told me that the 3g was blocked (without any reason) .... so now the 3g is working back... thanks for your help
http://forum.xda-developers.com/showthread.php?t=2393289
[REF] IMEI / EFS - Know this stuff (i9300) - including "no network"
Sent from my GT-N5110 using XDA Premium 4 mobile app
sorry but i'm not sure about your answer ... my imei is right (not 000 or .. ) , and i'm able to send sms and make calls , the only problem is with the internet mobile connection (3g)
docizoc said:
sorry but i'm not sure about your answer ... my imei is right (not 000 or .. ) , and i'm able to send sms and make calls , the only problem is with the internet mobile connection (3g)
Click to expand...
Click to collapse
Factory reset .
Flash rom again .
JJEgan said:
Factory reset .
Flash rom again .
Click to expand...
Click to collapse
tried without success
i also tried the new test rom I9300XXUGMK6_I9300OXAGMK6_OXA.zip (open europe) but same issue.
when i'm going to the status page i get these informations :
mobile network type : hsdpa
service state : in service
mobile network state : disconnected or connecting (then back to disconnected)
any clue ?

registaring to a network problem

i have Itel it1355 android version 5.1 Lollipop my problem is that my phone reads my Sim card but it doesn't have any signal
and i can't make any calls or receive calls
i have tried searching for network both manual and auto ,changing network type,turning on and off the radio but no use ,i checked the imei if its the problem but the imei was correct
I will be really happy to get a solution

Y6 SCL-u31 Show No service and Emergency Call only

Huawei y6 SCL-U31 came in normal condition but after root mobile work slow then reset it after that mobile goes dead and flashed it with wrong build no.then i download same build no from support area.now mobile alive again but show No service and Emergency call only. .plz guide me how i fix these problems.
1. when start mobile mobile logo not show just green display show after that mobile started normally
2.model no show show as MSM8909 in Hisuite and other flashing divices
3. most imported thing mobile have no signol and show emergency call and no Service(when i enter "Mobile network
setting"all thing disabled like card1 network and card2 network totally disabled.)

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