Hi all!
For about a week my International Samsung Galaxy S3 (i9300) have been experiencing network issues. At first I have full connection and after a while the network cuts off and my sim card disables (in the status bar the mobile data icon shows "no data sim") and then it switches back on and everything works.
This process happens constantly.
I have tried numerous solutions like flashing new ROM and trying to view logs.
It still shows the IMEI and I don't want to unnecessarily modify my EFS I've read that it can cause serious problems.
What is the problem and how can it be solved? Any help is most welcome and I will send logs and info if needed.
If the problem is already solved please show a link because I couldn't find anything that helps.
Thanks in advance!
I'm having a similar problem with my I9300 as well, the difference is that the network only gets cut off when I try to make a call, and then it comes back after a few seconds, and it doesn't show 'no data sim' it just stays with no connection (no bars). Messaging and 3G Data connection works fine.
I already tried to solve with several methods, the only one that I didn't try is to Odin flash back to stock, wich I don't really want to. I'm running cm-11-2016 at the moment.
Related
The Edge symbol in my Galaxy S2 disappears when the signal is down.
It never reappear when the network signal get back. Even If i change all settings... tried disable/enable "Use packet Data" and other settings...
NO USE! It seemed to be serious and consistent bug.
Hi balavj, maybe a silly question, but are you sure that you are in an area well covered by edge gprs signal?
Sent from my GT-I9100 using XDA App
Signal drops inside a room... when i come out of a room... network signal regains... everything works... data connection symbol does not come back... this is the exact problem... only after reboot... it resolves
Ah I see... Never met these conditions with my phone here, so sorry I can't be of much help.
Sent from my GT-I9100 using XDA App
i am having a similar problem, seems to have happened quite recently for me as previously i had no real issues with it at all.
I keep having to reboot my phone to get a mobile network connection, otherwise the Mobile Network Status shows as connecting all the time...
Very strange
Try other modem, or shove the phone into airplane mode and back again should kick it back onto data.
I have the same problem here...
Tried KE4 (Original), KG7 and KH3 modems e nothing..
Tried many roms too, and nothing, the problem is on all of them...
Data on/off, Airplane mode on/off, nothing gets data working back, only reboot...
Ps.: ROMs tested: Lite'ning, Cognition, Exynos, KE4, KG7.
Kernels: Niphetamine, Jeffrey, Speedmod
SAme here
same here...
Is anyone still experiencing this?
I was having major issues with connectivity, data and calls. I got to the point where i could barely make or receive a call or connect to a mobile data network.
I tried numerous modems and firmware, including original O2 carrier branded firmware, generic firmware and custome ROMs. I found the problem replicating across them all.
I finally settled on Crsikelos ROM (V14) with KE7 modem, however i had previously done a full wipe install of my original O2 firmware (XWKDE i think) and tried a couple of different modems (KH3, KE2 and KE7).
I even tried removing my SD card as i am convinced my sd card is not compatible and is causing issues...
All of a sudden everything started to work again?? I put my SD card back in and left it in, no chance everything was still working. So then i flashed Criskelos Rom and made sure my modem was KE7, that was about a week ago and it's still all good.
TBH i think it may be something to do with O2's network being pants (rather than my SD card )....
Not sure this will help but i thought i'd post my experience for you...
Hope you get it fixed
i have the same problem i.e data loses connection. after a fresh flash of stock rom and factory reset , it starts working fine for a week or so and then the shyt happens again . i can tell u , its not a hardware issue, it more like a software issue.
i m not good at android but wen i used to run squid on a linux machine as a proxy server , i recall i had to clear a log file to make data flow possible every few days. i think android has a similar issues some logs files build up or some **** like that.
Hello everyone, i'm asking this because it's the third time i had this issue. I often keep my Data Network Mode deactivated and turn it on only when i need because of my 3g plan (quota, taxes, and also because it's likely to find a WiFi network in the places i usually go).
The problem is, sometimes i turn on 3g (by Phone options menu) and... nothing happens... i need to reboot to make it work again.
The 3G network in my country is quite unstable, but i'm pretty sure that isn't a signal problem because one of the times i was turning on/off the 3G to make it work and i gave up and forgot to turn it off, the next day when i tried again i found it was On but not connected. After a reboot, working again.
Anyone having this issue who found a fix? Could be a problem with the kernel or app?
Edit: I Forgot: CF-ROOT Kernel, KF3
Omega Frost said:
Hello everyone, i'm asking this because it's the third time i had this issue. I often keep my Data Network Mode deactivated and turn it on only when i need because of my 3g plan (quota, taxes, and also because it's likely to find a WiFi network in the places i usually go).
The problem is, sometimes i turn on 3g (by Phone options menu) and... nothing happens... i need to reboot to make it work again.
The 3G network in my country is quite unstable, but i'm pretty sure that isn't a signal problem because one of the times i was turning on/off the 3G to make it work and i gave up and forgot to turn it off, the next day when i tried again i found it was On but not connected. After a reboot, working again.
Anyone having this issue who found a fix? Could be a problem with the kernel or app?
Edit: I Forgot: CF-ROOT Kernel, KF3
Click to expand...
Click to collapse
mate i am afraid you have answer already - "The 3G network in my country is quite unstable"
that can clearly produce the bug. Just in the case check your APN settings if they are correct. Settings- wireless and network-mobile networks- access Poin Names - compare the stats there with your network provider and make deep research.
just example i am on vodafone - i found that i was running vodafone live profile in APN and i was loosing conexion and i had troubles loading some pages - after research i found that there is another setup for vodafone as well - different then the live but for vodafone as well. i am using it since then and i am experiencing now the lighting speed of 3g. Just give it a try.
Searching on the internet i found that the configuration of my APN is equal to the recommended.
Backup data and factory reset phone should clear any software problems .
You could try flashing KH3 modem .
jje
Same issue here for both rooted and un-rooted GS2
Retracted - will have to do more testing
I have sgs3 international. A few months ago my phone started having down times. By down times mean that the network connection suddenly lost. I get the no signal sign where the reception bar is. It says no service in the status bar and I cant do any network related functions such as calling, sms, recive calls and surf the web. The phone would randomly lose the connection and find it again. The down times started on short perios and get worse with time. Today my phone is mostly down and sometimes get reception. When I reboot when its down and check imei it says null/null. When it has connection the imei is normal. After short use on the phone it gors down again but the imei stays the same but goes to nnull after restart. I tried different operating systems it didnt help. Tried different methods of backing up and restoring efs, didnt help. Also I rwad a lot of no service symptoms but in none of them had the peoblem of random down and up times.
Tried anti virus and nothing was found.
Also I dont know if its relevant but at the beginning my system memory used to fill up during the down times. My hd filled up in 2 days while I didn't use the phone. I reset factory settings to clear thr hd (my system folder would grow until the entire hd was full). After formatting and installing different os. Today only the down time persists and it only get worse.
Please if you ever incountered this or have any info HELP ME!!!
Can anyone please help. I cant dolve this on my own. Am I the only one this happend to? If I have an invalid .nv_data or some other filebwrong in my efs folder would my phone be able to reconnect to the network every once in a while? Are there viruses that block phone communication? If it is a virus what should I look for? A specific file or folder on my phone (my phone is rooted and I have rooted explorer). Has anyone encountered anything like what I describe?
Since this problem happens from time to time, and it is not permanent, I guess that your IMEI number is intact.
Have you tried a different modem?
You could also try an official update of Sammy i.e. if you use 4.1.2, you could upgrade to 4.3 through OTA maybe
the same goes to me, i have similar problem with him, pls help us! :crying:
Hi everybody, I am quite frustrated at the moment, since my S2 has driven me up the wall all day long. To cut a long story short, for some reason my mobile data is unusable. For some reason, yesterday I flashed a modem (...KS3 or somethng, i had already used that file previously, and worked), and after rebooting mobile data was gone. Then I don't recall what I did to troubleshoot the issue, but I came across these results:
1 - Managed to get the H+ icon back, but no internet, I could see from the arrows on the icon that it tried to connect but couldn't.
2 - Tried to switch between APNs, but with no success. On PAC rom an apn got the state 1, but still no internet.
3 - Tired with dirty flashing and no success, I decided to start over and do a full wipe and flash of CM11 official and on first boot, still no internet.
Right now it's sitting there, with no icon next to the bars, and i can't make any calls nor send SMSes. What do you advise me to do? I flashed a modem when I was on CM11, right before bosting this and still no luck.
Please give me a hand, I am starting to grow a bit desperate, thinking of an hardware issue. Never did this before, if this can help
EDIT: It is now in state 1, the icon H+ is is there, but i can't access the Internet...
Hello, I don't know what causes this problem but my brother's i9100 lost signal sometimes BUT nothing like "not registered to network" it shows full signals, it can send sms or it can use mobile data but can't get calls. I know it's not hardware related bacause when he reboot it, it fixes itself. Also this problem does not cause by location.
Might be a modem problem. Has your issue come up suddenly or did you recently flashed it with something?
it looks like modem problem. You may try to flash XXMS4 modem. Most probably it solves your problem