[HELP] No Network Suddenly - Galaxy S III Q&A, Help & Troubleshooting

Hey guys
my SGS3 GTi9300 suddenly does not detect any mobile network. I cannot make or recieve any calls :crying::crying:
I have tried using a different sim card and same issue. No Service.
My sim card in a different phone works properly.
Manual searching of the network does not work.
reboot, airplane etc does not work.
My IMEI and everything is proper I havent made any changes in the phone. A very Spontaneous problem.
everything else works fine. wifi bluetooth etc.
I am from India on LiquidSmooth v3.2 rom. Android 4.4.4.
Network provider Reliance.
Please help

Try a different modem.
The one you WAS using will work but do you know what one it was or have a back up of it? I'm from the UK so I don't know what modem you would use. Also check apns as this happens with that to. All this fails go back to stock and test. If that is still a fail it time to check if imei is blocked by provider . I belive India networks now block imei that have been reported.

Solution
Surprisingly changing the network mode from 3g to 2g worked. Now I have network.
My service provider sent me the settings again maybe they got deleted or something.

Related

[Q] mobile network state disconnected

ive been using the phone for a few weeks now and it was fine until today, i cant connect to the internet via edge . ive tweaked with all the settings but nothing seems to work. everything else is fine . ie i can make calls and send text's but i cant connect to the internet. i checked under the status and it shows the mobile network state is disconnected. i have no clue as to wat this is since im new to android.
pls help!
Have you turned MOBILE DATA off via the power on/off menu .
jje
ive checked that too.
Go to Settings- Wireless and Network- Mobile Networks- Access Point Names and see if the APN is ticked or not or the correct APN is ticked.
everything is back to normal again,it connected to the internet, by itself . must be a random bug in the os
problem solved. peace
I have experienced the same thing with my phone, except that it shows "activated". After a while it just started working again.
I've had the phone for a couple of months now and everything has worked fine till now, a little bugs here and there but no issues. A few weeks back (on android 2.3.3) I was unable to make or receive calls, but surprisingly was able to make text messages. I tried everything, turning flight mode on/off; the phone on/off; etc. I was on the verge of contacting Samsung but then suddenly the thing started working once I came back home from the office.
There has been no problems till then but today suddenly (now on android 2.3.6) the outgoing calls no longer work, same for outgoing text message; but I still get incoming calls and messages.
Just to be sure that this wasn't a SIM or service issue, I tried changing SIM's (different SIM did not work on the phone) and used my SIM on different phone (where it worked).
Also 3G doesn't work as well, but connection here is spotty so I wouldn't trust that. The only message I see different on the 'About Phone' tab is 'Mobile State-Disconnected'. I have full signal strength and all that.
My thoughts are that it was, or rather is a phone specific issue and would appreciate someone else's thoughts on the matter. As to my problem I assume it will sort itself out in a little while.
FYI: Samsung Galaxy S2; Android 2.3.6; NOT rooted; Indian version; On Airtel Mobile Network.
Mobile network state disconnected.
Hi guys, I have the same problem with my network connection also my 3g does not work anymore, I`m play with some secret codes like a ##72786# on my epic 4g touch sprint phone flashed to metro pcs and now I have no 3G service. In the setting menu under network status say Sprint. How can I get my 3g back?. The mobile net. 3G is on and the wifi is off. I need to change the network to metro pcs in the status setting and how can do that? Thanks for your help and sorry for my bad English.

[Q] "Unable to connect. Try later"

Hi there!
I've found several threads with this issue, but still not that serious like mine.
I've been using my GS II for 3 month without any problem, untill yesterday. During surfing on the net the network suddenly gone away and since I don't have mobile network connection. I've got IMEI, CSC, signal from provider (unlocked phone), my SIM card works in other devices, I also updated the firmware, I made several hard resets, checked other SIM cards, checked the problem with flight mode, but I haven't found any solutions. The signal sign is there in the upper corner, but I'm not able to connect to any providers for 48 hours.
Please help me. I don't know what to do
Maybe a country specific CSC change? I don't know how to do that. I have one .tar file for that but Odin can't install it. I'm a beginner here...
Thanks in advance...
Have you tried checking the access point settings?
Sent from my GT-I9100
Yes. They are fine. I've just changed them and put them to default again because there was no change.
When the phone went offline I was just surfing on the net so I did not change any options.
Any other ideas maybe?
Thanks...
try talking to your provider. Your account may have a problem which could be fixed by a simple reset on their end.
Thanks for the comment. Well, I've tried to use other sims for the same and also from other providers, even a sim from another country, and none of them worked. I also tried to put my sim into another phone and the sim works fine there. The only logical solution is that the problem is with the phone.
I guess it's worth a try, maybe they blocked the IMEI of the phone because of something? It's not a stolen mobile though.
Now I've got a flashed brand new mp4 player from samsung. Nice, it drives me crayz...
Another idea. While I was surfing on the net I installed "advanced task killer" (before the "crash" happened) and I killed some ordinary apps (not sure about this) then I just deleted the program. This connection rejecting thing happened after this. That's why I thought I should make a firmware update, maybe the problem was caused by this task killer. Well, don't know if the is a connection or not...
I have exactly the same proble with my Galaxy SII - I went on a long trip - when I got back it stopped working. Has anyone found a solution to this?
To reiterate - the phone sees all the networks, but when I select Vodafone UK I get the message "unable to select vodafone UK automatically". The sim card works fine in other phones - there is clearly an issue with the phone. The only thing that has changed is I have updated some of my apps on returning home.
Any ideas?
Wrong IMEI
Wrong CSC
Sim Card connections/ sim card faulty .
Network problems .
Backup data Factory reset .
jje
same problem...
Hunt88 said:
Hi there!
I've found several threads with this issue, but still not that serious like mine.
I've been using my GS II for 3 month without any problem, untill yesterday. During surfing on the net the network suddenly gone away and since I don't have mobile network connection. I've got IMEI, CSC, signal from provider (unlocked phone), my SIM card works in other devices, I also updated the firmware, I made several hard resets, checked other SIM cards, checked the problem with flight mode, but I haven't found any solutions. The signal sign is there in the upper corner, but I'm not able to connect to any providers for 48 hours.
Please help me. I don't know what to do
Maybe a country specific CSC change? I don't know how to do that. I have one .tar file for that but Odin can't install it. I'm a beginner here...
Thanks in advance...
Click to expand...
Click to collapse
yes..im DIGI(Malaysia) user..facing exactly problem like you in ics rom..in gb rom was perfect.. no problem with network.. can flash any rom.. Becoz of that prob,i tried to input apn setting manually by follow DIGI apn setting manual step by step.. unfortunately,i dont know why i cant save my apn setting in ics rom..after i create apn setting, it went missing..blank..i had tried a lot of latest ics roms like turkbey, wanam, omega,darky, resurrection, criskelo(full wipe data, cache, dalvik cache, sim card changed).. but still the same.. until now i still cant get DIGI network in ics rom.. if anybody has a solution, please help..
JJEgan said:
Wrong IMEI
Wrong CSC
Sim Card connections/ sim card faulty .
Network problems .
Backup data Factory reset .
jje
Click to expand...
Click to collapse
My CSC is XEU (correct for UK as far as I can see - and has worked for the past 3 months)
Sim card works fine in another phone
Network is fine (my wife is also on Vodafone and has no issues - my sim works on the network on her phone)
My Imei is correct
-Everyone else who has had this problem had no joy with a factory reset so I'm loathe to try it until I''ve tried everything else.
Any other ideas?
Just to recap:
The phone is stuck in emergency calls only mode
I can see all my local networks (Vodaphone, Orange etc...)
When I try to connect (in any of the modes 2g/3g) I get the error message
The sim card works fine in other phones
Other people's sim cards have the same issue in my phone
There are plenty of 'Emergency calls only' threads around, but the ones that have my exact symptoms never seem to get solved. Does anyone have any other ideas, or better, has anyone come across a thread where the issue was resolved? Getting pretty desperate.
tried rooting and flashing different modems maybe its a hardware problem with the modem.
djseaneq said:
tried rooting and flashing different modems maybe its a hardware problem with the modem.
Click to expand...
Click to collapse
i have the same problem in greece galaxy s2 i9100....in ics i havent network in 2.3.5 i have...i dont know why...in cm9 ics i have network...
Last update - I have flashed the phone to Ice Cream Sandwich, (LPQ version), which means I have:
Carried out a factory reset
Flashed a new ROM and Modem
When I rebooted it asked me for my carrier (Vodafone UK) and filled in the APN settings itself. I still have the same issue. I can't work out what is left that I haven't reset/reloaded that could still be causing issue. There can't be many settings left that aren't new?
cavemanxd said:
Last update - I have flashed the phone to Ice Cream Sandwich, (LPQ version), which means I have:
Carried out a factory reset
Flashed a new ROM and Modem
When I rebooted it asked me for my carrier (Vodafone UK) and filled in the APN settings itself. I still have the same issue. I can't work out what is left that I haven't reset/reloaded that could still be causing issue. There can't be many settings left that aren't new?
Click to expand...
Click to collapse
i try to put manual apns but i cant save this in phone...in network search found my carrier but not conected...only with cm9 ics found network...pff...
Success?!?! It looks like we have tracked down the problem (extremely helpful input from another forum). Quick call to Vodafone and it turns out that my IMEI has been blacklisted (stolen!) Imagine my surprise - currently having a very interesting with Carphonewarehouse as to how hey managed to give me a stolen phone - should hopefully have everything resolved shortly
i try to put manual apns but i cant save this in phone...in network search found my carrier but not conected...only with cm9 ics found network...pff...
Click to expand...
Click to collapse
Very odd - when you first boot after a flash does it not ask you to select your contract type (that is the bit that automatically fills in the APN for me?)
my solution
http://forum.xda-developers.com/showpost.php?p=25509654&postcount=279
this helped to me
Had the EXACT same issue on my Galaxy Note II for two days. My last hope was trying to restore my EFS with the EFS pro app.
Now when enabled my wifi at home and connected to my home network my sim prompted for the pin code.
Strange but I guess it was waiting for a connection (from my home wifi (not any other wifi) from a "half downloaded" app from the play store.
Anyways I'm happy this issue is resolved.
Does your phone prompt for a pincode when you start it? (mine said unable to complete download everytime it booted)
Hope this will help you guys...
Samsung Galaxy "Unable to connect. Try later" issue still remain
Hi guys,
I have the same issue with the following device:
Samsung Galaxy S3
I live in continental western Europe. Operators tried: BASE, MOBISTAR, PROXIMUS, POST.
The IMEI is correct, does not start with 00. The phone was bought from a shop, new, I have the invoice, so is legal, not stolen.
For some unknown reason, suddenly it does not want to connect to the mobile operators, any of them. I see "Emergency calls only". When I try to connect any one automatically or manually, I always get the message "Unable to connect. Try later".
The SIM card work well in another device, a Nokia C3-00. Another SIM does not work in my defective Samung S3. I sent back the device to the shop to be repaired and they gave it back to me saying it work very well, they just upgraded to the latest firmware, etc.
I am very annoyed because the device is unreliable. I have it in my pocket and do not realize it is not connected to the mobile network, I cannot be called or receive messages. Also I am unable to call.
The WIFI work well.
I tried everything, removing the SIM, inserting another, shutting down, enabling and disabling flight mode, nothing works.
But the later for some unkown reason and logic, it just work again for some time.
You guys wrote about some solution by looking in a folder, but I don't see that folder. Also you mention rooting. Does this mean cracking the phone? I do not wish to meddle with this, because I could destroy my device and I paid a lot for it. It will remove the warranty. So if you have a solution, please give a legal one.
Anyone have a hint or explanation for this strange behaviour?
Thanks a lot.
had a similar problem with galaxy core prime.
bought without a sim card and no knowledge of what network it was on.
every sim i tried was getting unable to connect error as i was trying to register on network
dont know if this will work for everyone as mine is a dual sim phone but here goes.
inserted two different sims from different providers, ee and vodafone.
reset phone to factory settings and when it booted back up, it recognised the ee sim card, went to mobile networks and network operators in settings and selected the ee network and presto, it registered ! used sim manager to select voda card and repeated selecting vodafone as carrier and it also registered straightaway
as i said none of the cards would register before on their own, but somehow this method worked for me.
hope this helps
had to set one sim to gsm only and other to autoconnect

[Q] 'Emergency calls only' after replacing USB port

Hello,
I have a weird problem after I replaced my USB port chip. I'm in India and my carrier is Airtel. When I turn the phone on, I get Emergency calls only and when I try to call anyone, I get Not registered on network. The weird thing is that SIMs from other carriers are working fine in the S2 and the Airtel SIM itself is also working fine in my other phone. When I look for networks, the phone shows all available ones but not the Airtel network.
I've tried flashing a couple of ROMs, including the latest one in the Stock official thread (unbranded of course) here on XDA to no avail. Have not wiped anything yet though. Help please!
EDIT: I have checked the keystr file and my IMEI is fine too.

[Q] I9100 with 3 Ireland - Unable to connect to network

Hi,
My S2 won't connect to my network. While living in France I rooted it, and installed a custom rom (vk-ics). This caused no problems and everything worked fine. Since moving back to Ireland (where the phone worked fine pre-rooting) I now can't connect to a network. I had a meteor sim, which was able to connect to the data network, but not make or receive calls, ie. emergency calls only. Now I've changed to 3 mobile hoping that would solve the problem. I am now sometimes able to connect to the 2g network (which works as national roaming with vodafone), but not to 3's 3g network. The sim works fine in another phone.
I have tried flashing a new rom (resurrection remix), and several different modems, but non of them have helped. I have checked my IMEI by using *#06# and it matches what written behind the battery. Does anybody have any suggestions of what the problem might be?
Thanks
I've now done a complete factory reset and flashed the phone with the latest stock firmware for 3 and still the same problem. Emergency calls only. I am completely out of ideas.
Can anybody shine some light on what's happening? It worked fine in France on SFR.
Call your carrier & check there isn't something at their end causing this (IMEI barred, some kind of issue with your account; and actually do this. Don't just say you did, come back here & go thru a bunch of troubleshooting steps that won't work because it's a carrier side issue).
If there's nothing carrier side, do a clean install of ICS stock (wipe, etc) & see if that fixes the problem, if it doesn't, post here again.
MistahBungle said:
Call your carrier & check there isn't something at their end causing this (IMEI barred, some kind of issue with your account; and actually do this. Don't just say you did, come back here & go thru a bunch of troubleshooting steps that won't work because it's a carrier side issue).
If there's nothing carrier side, do a clean install of ICS stock (wipe, etc) & see if that fixes the problem, if it doesn't, post here again.
Click to expand...
Click to collapse
I asked my carrier was the IMEI blocked weeks ago and they said no. But seeing as no other solution would work I paid for a report online with checkmend yesterday, and it turns out it is blocked. Their customer care is ridiculous. I could have saved myself a whole lot of pain if someone had been able to check the database properly!
Cheers for the reply

[Q] Unable to connect to mobile network

So I used my phone this morning and all was fine and dandy, a couple of hours later and the phone could not connect to the mobile network. I triedsaving my network's APN settings that iI got from their website, but it would not save, I tried to save the settings using this trick where I rebootthen save the settings or sth like that to no avail. I tried dialling *#*#4636#*#* and changing the network type to cdma , but the setting would change for a split sec then return to unknown. After scouring on the threads for some time I thought i'd flash Cyanogenmod, still no network. Somebody please help me here I have tried everything I have seen on the threads. I was using vanilla root box 4.2 when this happened, along with the stock kernel. Wi-Fi works fine BTW. I also tried resetting APN settings to default, but I end up with the same empty screen with no APN settings whatsoever. I never touched these settings before this unfortunate event. Maybe if I flash a modem or radio(I hear one of those is responsible for connecting to the mobile network).
Modem and radio are the same thing, flashing the right one for your country won't help the apn issue. Flashing a stock 4.1.2 rom and factory reset to test if it's hardware or software problem. First check with your network that data is working in your area.

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