[Q] Problem with 3G network... - Galaxy S III Mini Q&A, Help & Troubleshooting

Hi, I have a problem with my S3 Mini (no custom roms, no mods). After rebooting, my phone always disconnects from my network, and says : No service (O2-CZ not available). But when i search for networks, it finds mine network and normally connects. Is it a bug? or bad update? Thanks for answer...

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3G network problem

Sorry for my English ...
I have a problem with phone network in all roms (Cyanogen, Gingerbread Stock, etc, and based on those).
As I read through the forums, people know it as "network ghost". That is, the phone network says it has, but in reality the phone is not network and gives off if they call me.
If I put the phone in 3G mode, the phone loses the network. But if I put the phone in 2G mode, the network apparently never lost.
Can you help me solve this problem for the phone so do not miss 3G network?
Currently I have CM Kang P204-35.
A greeting and thanks.

[Q] S III mini network issue

Hi guys,
I own an i8190, baseband : I8190XXALJL and I encounter frequent network outage.
Although the signal strenght indicator shows 3-4 bars, I cannot be called, cannot call and data is not being fetched.
On battery usage app, the network is most of the time "green".
On any other phone around me (blackberries, iphones, SGS II and III), and on the same network the problem does not reproduce.
If I turn the phone to airplane mode, and then back on, I am able to call, send mails so on and so forth.
Does any of you have the same problem ?
If any of you updated to I8190XXALL2, is this problem still persisting ?
Should I send it to the service ?
I'm currently running the ALL2 baseband, but previously had both the ALJL and the ALK6 ones and didn't encounter any such issue...
Before sending it back you could try with a different SIM card, maybe yours is acting up (it sometimes happens, especially with old SIMs).
Seeing how nobody complained of a similar issue though, I don't think that changing your baseband will have an impact, but if you'd like to give it a try you can download original firmwares (that contain the baseband) from here: http://www.sammobile.com/firmware/. In order to install them, just follow the steps in the root thread.
Will do so. I'm going to pit-stop my SIM card @ Vodafone and let you know about it.
It's strange that this happens only deep inside buildings (eg. offices, malls, etc..).
When this happens, usually the data activity indicator disappears OR the S3 mini is using 3G frequencies (not H, not G, but 3G)
Just changed my sim card and the issue still persists...
It's driving me nuts. My feeling is that the S3 mini doesn't lock on a network cell when 2 are available with similar coverage.
Will upgrade to the latest build and let you know about it :banghead:
Sent from my GT-I8190 using Tapatalk 2
And now the handset runs XXALL2 from vodafone uk.
I'm curious if the phone will have that network issue furthermore.
Happy Holidays!!
Sent from my GT-I8190 using Tapatalk 2
bogdangr said:
Hi guys,
I own an i8190, baseband : I8190XXALJL and I encounter frequent network outage.
Although the signal strenght indicator shows 3-4 bars, I cannot be called, cannot call and data is not being fetched.
On battery usage app, the network is most of the time "green".
On any other phone around me (blackberries, iphones, SGS II and III), and on the same network the problem does not reproduce.
If I turn the phone to airplane mode, and then back on, I am able to call, send mails so on and so forth.
Does any of you have the same problem ?
If any of you updated to I8190XXALL2, is this problem still persisting ?
Should I send it to the service ?
Click to expand...
Click to collapse
I'm exactly in the same situation . Please let me know if your new firmware solves the problem.
Tks,
ci6i said:
I'm exactly in the same situation . Please let me know if your new firmware solves the problem.
Tks,
Click to expand...
Click to collapse
So far there's no difference. Where I live the network coverage is pretty bad, but it doesn't "disconnect in the background".
Only at the office I can test it out for sure or inside massive buildings.
ci6i, go ahead and update; install kies (for drivers only ), get odin3 1.87 and flash it with XALL2 from samfirmware.
Lately I see there is XALL3 available for some asian countries.
I still think that my BlackBerry 9810 is a tank. unfortunately vodafone romania doesn't sync emails two ways via BIS so... :crying: I had to get back to samsungs...
Well, i understand to lose signal if network coverage is bad, but my phone gets "network stuck" in the middle of town. I noticed this few times: at job, the phone stands on the table near me, and i receive sms about missed calls (i have voice calls diverted to voice mail when unreachable). If i try to call or browse the net at this moment, it's impossible until i set airplane mode on then off. All this time, the phone shows full network signal and HSPA data connection.
I'll try to change the firmware after hollidays.
As mentioned above, try to change firmwares (to XXALL2), I've also noticed some network drops when I'm at home (however this is expected in my case), but when I installed this firmware, I noticed some signal gain (full on 2G and +1-2bars on 3G signal).
Hi again.
The same issue even on xall2
Just happened again today in a crowded place.
It goes to "3G" from "H" and then it's gone off the network.
Will try with XALL3 although there is a small improvement concerning "sticking to the network carrier". It seems it'a hard job to get a call when in coverage area...
If still no success, I'll loose my patience with this Sammy...
See ya!
Sent from my GT-I8190 using Tapatalk 2
You get SMS because they use a dedicated network bandwidth for this technology and apparently the S3 mini does not loose connection on this communixation channel.
It appears that S3 mini is dropping voice and data, but not sms and CB (cell broadcast).
Sent from my GT-I8190 using Tapatalk 2
LJL version. No drops. Sometimes when i am on edge of 3G coverage area
Sent from my GT-I8190 using xda app-developers app
Hi, i also have the problem with vodafone Romania. I can't place calls or use data connection. After reboot everything is ok. I tried to switch to Airplane mode and back, but no results.
Same problem over here
bogdangr said:
Does any of you have the same problem ?
If any of you updated to I8190XXALL2, is this problem still persisting ?
Should I send it to the service ?
Click to expand...
Click to collapse
Hi bogdangr,
I have the same problem with my SIII mini. From time to time, after working normally, it loses the H or 3G symbol and shows about two or three signal bars, but if I try to make a call or receive one the operation fails miserably. The airplane mode trick doesn't work for me, and I have to reboot the phone to get it working again.
I've updated to the latest official firmware, but the problem is still there. Have you found a solution for this or anybody has more ideas of things to try?
Thanks you all,
MFC
I'm on VF RO, too.
Crappy phone, what can I say.
If it can't follow a network where there is sufficient coverage...
miguelfc said:
Hi bogdangr,
I have the same problem with my SIII mini. From time to time, after working normally, it loses the H or 3G symbol and shows about two or three signal bars, but if I try to make a call or receive one the operation fails miserably. The airplane mode trick doesn't work for me, and I have to reboot the phone to get it working again.
I've updated to the latest official firmware, but the problem is still there. Have you found a solution for this or anybody has more ideas of things to try?
Thanks you all,
MFC
Click to expand...
Click to collapse
Hi Miguel,
The only workaround for this issue (at least for me) is to keep it in GSM mode (no "AUTO mode", no "WCDMA only").
So the crappy phone won't have to switch frequencies and I can get phone calls (I start considering a luck when the phone rings...)
I'm on 4.1.2 now baseband I8190DXALL3 (latest on samfirmware) and still the same.
You just don't want to know how's everything downloading limted to GPRS
BR,
Bogdan
Does anyone know what's that *# code that enables service / engineering mode ?
I want to select on which network frequencies is the phone allowed to work.
I want to disable 3G mode and leave GPRS, EDGE, and HS(D)PA only.
The reason is that when the issue appears, S3 mini switches from "H to 3G" and "G to 3G" and then it's gone;
Although there are moments when it can fetch data with network on 3G coverage without problems...
The code is *#*#info#*#* but it doesn't work .
I don't think it's a good ideea to disable those settings. Maybe it's a temporarily problem and i know Vodafone is testing/launching 4G coverage.
For me, this network issue is happening once in a week. How often do you lose phone signal ?
ci6i said:
The code is *#*#info#*#* but it doesn't work .
I don't think it's a good ideea to disable those settings. Maybe it's a temporarily problem and i know Vodafone is testing/launching 4G coverage.
For me, this network issue is happening once in a week. How often do you lose phone signal ?
Click to expand...
Click to collapse
I found out the service code but the RF setup is not "sufforted".
Vodafone has implemeted already 4G in selected areas but it's not about that. On blackberry, iphone and nokia this is not happening.
As a frequency... 3-5 times a day while I'm at the office.
Sent from my GT-I8190 using Tapatalk 2
I'm using it with Orange Spain. I will try using the phone this weekend with another operator to find out if the problem is operator related.

[Q] Only connecting to 3G, Please Help

Ok I have a Galaxy S3 I9305, ive tried many radios and basebands but cant get my phone to get connected to the 2G GPRS service, I live in a very poor 3G area... My nexus 4 connects ok, ive tried *#*#4636#*#* and set it to GSM only but it just disconnects and get no service whatsoever, it happens with every network
Any help would be deeply appreciated
Thank you
Update: Turns out an O2 mast has failed in my area and is not working, checked my dads iPhone and has the same 3G only issue... Too coincidental since I just bought the S3
Hopefully they'll fix mast soon

[Q] Unable to connect to Vodafone 3G (C5302)

Hi
I am in Kolkata India and recently switched from a 2G to a 3G plan with Vodafone Kolkata. Ever since then, my problem is that I am unable to connect to 3G using WCDMA. Neither voice nor data works. If I revert to GSM only, then voice and 2G works fine. Wifi has been fine and my saviour at home.
Phone details: Sony Xperia SP C5302 running Android 4.3 build 12.1.A.1.205.
I have confirmed with network service that it is not a SIM card issue, by carrying out the foll. tests already
1- Signal strength in the area of use : At the time when I am unable to connect to 3G, my colleague sitting in the next desk and using a Motorola phone is consistently able to connect to the same 3G network from his phone. So the network strength must be fine.
2- SIM damaged or dirty - I have obtained a new SIM card as replacement, after this problem started, from my service provider yesterday. But the problem is not resolved.
3- Manual network search and connection - I have tried this many times, using WCDMA only or WCDMA(Preferred) options. In either case, only on rare occasions, the phone was able to connect to a network. However, 3G data connection (H+ icon) did not show and then the phone disconnects from network. On most occasions, when I manually attempt to connect to the 3G network, I get the message "Could not register to the selected network. Make sure SIM is inserted."
3- Trying different SIM/Handset - I have tried out both options of switching SIM and handset.
- My SIM on Motorola handset - connects to H+
- Another SIM on my Sony - momentarily connects, then disconnects and then does not connect to network.
Please let me know if anyone has faced similar issues and found any resolution. Thank you in advance.
soumit.c said:
Hi
I am in Kolkata India and recently switched from a 2G to a 3G plan with Vodafone Kolkata. Ever since then, my problem is that I am unable to connect to 3G using WCDMA. Neither voice nor data works. If I revert to GSM only, then voice and 2G works fine. Wifi has been fine and my saviour at home.
Phone details: Sony Xperia SP C5302 running Android 4.3 build 12.1.A.1.205.
I have confirmed with network service that it is not a SIM card issue, by carrying out the foll. tests already
1- Signal strength in the area of use : At the time when I am unable to connect to 3G, my colleague sitting in the next desk and using a Motorola phone is consistently able to connect to the same 3G network from his phone. So the network strength must be fine.
2- SIM damaged or dirty - I have obtained a new SIM card as replacement, after this problem started, from my service provider yesterday. But the problem is not resolved.
3- Manual network search and connection - I have tried this many times, using WCDMA only or WCDMA(Preferred) options. In either case, only on rare occasions, the phone was able to connect to a network. However, 3G data connection (H+ icon) did not show and then the phone disconnects from network. On most occasions, when I manually attempt to connect to the 3G network, I get the message "Could not register to the selected network. Make sure SIM is inserted."
3- Trying different SIM/Handset - I have tried out both options of switching SIM and handset.
- My SIM on Motorola handset - connects to H+
- Another SIM on my Sony - momentarily connects, then disconnects and then does not connect to network.
Please let me know if anyone has faced similar issues and found any resolution. Thank you in advance.
Click to expand...
Click to collapse
I think that there's an option to use 2G instead of 3G in the settings menu, have you checked to see if that is enabled?
Plum Crazy said:
I think that there's an option to use 2G instead of 3G in the settings menu, have you checked to see if that is enabled?
Click to expand...
Click to collapse
That is the WCDMA option I've mentioned about, there was no other setting for this.
Anyways, it turned out to be a hardware problem. Got the "mother-board" replaced for free as it was under warranty & now working fine!
soumit.c said:
That is the WCDMA option I've mentioned about, there was no other setting for this.
Anyways, it turned out to be a hardware problem. Got the "mother-board" replaced for free as it was under warranty & now working fine!
Click to expand...
Click to collapse
Good to see that you've sorted out the problem!

[Q] General Mobile Data Issue, Baseband Problem?

Hi at all.
This is my first Post, but i cant get any further with my Problem.
I used to have cm11 on my I9305 (T-Mobile Germany), everything worked fine (more or less).
Last Month from one day to another my Baseband completely disappeared without any obvious reason.
Luckily I had a Backup that worked with unofficial cm12 rom.
After that nearly everything worked.
Now, since 2 Days i got a new Problem. Everywhere where I got 4G, my Mobile Data work. But in Areas where I only got H+, 3G, Edge,
I have to switch my preferred connection to 2G, else my Data wont work. Sometimes for Seconds i see the 3G Logo, light up the Status Bar.
But I got no Connection.
The Strange Thing is, that when I call Someone, during the Call, the H+ Connection seems to work, but after the Call, it disappears.
And my WLAN Connection works only after every reboot (Connects, but no Internet, Also very disappointing)
Things I did yet:
-Flashed various Modems for I9305,
-Flashed different Roms (CM11, Nameless Rom, Resurrection Remix)
-Smashed the d*mn thing against the Wall :angel:
Information from my Phone:
-Baseband Version: I9305XXALK2
-Mobile Network Type: UMTS (it shows that, but no connection)
-Mobile Network State: Disconnected
-IP: Unavailable
Has anyone encountered a similar Issue, or a Solution?
Could it be a Hardware Problem?
EDIT: IMEI is okay. I try and try, but nothing seems to Work...

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