[Q] Unable to connect to network - Galaxy S II Q&A, Help & Troubleshooting

Ok, so I just bought an unlocked sgs2 gt-i9100 off a friend today, but I haven't had any luck in connecting it to my mobile network. After inserting my SIM and booting it up, it doesn't warn me about the lack of a SIM card, but it doesn't ask me for a PIN or anything either? Is that normal? Also it says I have no contacts to import from it, and when I manually search for my carrier, it brings up only 4 options (vodafone, movistar, orange, yoigo), none of which are mine. I tried with a movistar SIM card too, but when selecting movistar as the network, it just says "Unable to connect. Try later."
Wifi works well, but no phone features do. It shows the generic IMEI of 00499010640000, and I read in this post about a possible solution to returning it to back to normal. I haven't rooted the phone yet though because I don't want to modify it too much in case I decide to give up and return it to my friend. She apparently could use it well even with this IMEI before factory resetting it for me. Since the reset, none of the phone-related features have worked.
It's running Android 4.0.3, baseband I9100BULP7
Anyone else had this problem or know what I can do? Thanks in advance!

Probably better to try to get a mod to move this to the q&a section.
Sent from my GT-I9100 using xda premium

crap, you're right. Sorry about that...

Related

[Q] Atrix 4g WiFi not working

Hey guys,
i have the atrix 4g on which i used a simunlock code, so that i coudl put in my sim card from a european carrier, that works great, but the thing is the WiFi stopped working, it just went into a scanning/connecting loop and than it disconnects.
So i factory restored it and figuered out that s soon as i put in a working sim card (one that has cellular reception), the WiFi starts to behave like that and to get it to work i have to factory restore again without a sim card or with a nonworking sim card.
So i tried the motorola support and they said ye hardware issue, send in the phone, my problem however is im in europe right now and i cant really send or get the phone to motorola USA and they totally refuse to send it to an address outside of the US. However im 100% sure its a software issue (both things work for itself, and the thing that even removing the sim card doesnt restore the wifi funcionality makes me think there is some software issue).
So please guys if anyone has an idea how i could fix that i would be really greatful. Btw i tried some of the apps from the market to "fix" wifi (fxr, wififix etc). Fxr said it fixed the wifi bit it still wouldnt connect, the other apps just had the same issue as the stock wireless manager.
Thanks for your time
Did.you use software to unlock it or just a code?
Sent from my MB860 using XDA App
just a code
crnkoj said:
Hey guys,
i have the atrix 4g on which i used a simunlock code, so that i coudl put in my sim card from a european carrier, that works great, but the thing is the WiFi stopped working, it just went into a scanning/connecting loop and than it disconnects.
So i factory restored it and figuered out that s soon as i put in a working sim card (one that has cellular reception), the WiFi starts to behave like that and to get it to work i have to factory restore again without a sim card or with a nonworking sim card.
So i tried the motorola support and they said ye hardware issue, send in the phone, my problem however is im in europe right now and i cant really send or get the phone to motorola USA and they totally refuse to send it to an address outside of the US. However im 100% sure its a software issue (both things work for itself, and the thing that even removing the sim card doesnt restore the wifi funcionality makes me think there is some software issue).
So please guys if anyone has an idea how i could fix that i would be really greatful. Btw i tried some of the apps from the market to "fix" wifi (fxr, wififix etc). Fxr said it fixed the wifi bit it still wouldnt connect, the other apps just had the same issue as the stock wireless manager.
Thanks for your time
Click to expand...
Click to collapse
I have the exact same problem.
My phone is unlocked and can make calls, but WiFi disconnects me almost immediately. The phone also thinks my prepaid sim has H+ connectivity.
When I go back to my AT&T SIM, I have to do a reboot or 2 to get it cleared up, and then WiFi works again.
oh, i see that, i guess its some sort of ATT measure to block nonATT SIM cards, eventho the phone gets simunlock code. But the funny thing is there are a lot of people for whom it all works (like the guys in the unlock thread, using it in canada without a hitch), so im really wondering if this is not just a software glitch (i hope it is and gets fixed witht he 2.3 update..), otherwise my only hope are the devs here to crack wide open the bootloader and put some custom roms on it =/ really a great phone, but all this ATT software crap makes it feel like its an Iphone ...
But uhm still, anyone has any ideas how to try to fix this problem before the updates? =/
crnkoj said:
oh, i see that, i guess its some sort of ATT measure to block nonATT SIM cards, eventho the phone gets simunlock code. But the funny thing is there are a lot of people for whom it all works (like the guys in the unlock thread, using it in canada without a hitch), so im really wondering if this is not just a software glitch (i hope it is and gets fixed witht he 2.3 update..), otherwise my only hope are the devs here to crack wide open the bootloader and put some custom roms on it =/ really a great phone, but all this ATT software crap makes it feel like its an Iphone ...
But uhm still, anyone has any ideas how to try to fix this problem before the updates? =/
Click to expand...
Click to collapse
i also have a friend in saudi arabia who got the unlock code and the wifi is working fine.
only 2 people reported this so far. i guess it could be a hardware problem ? because the other user beside you have this problem even without sim installed " or that what i understood from him "
you can check the other thread too. maybe someone could post something usefull.
hmm i see, where did you find that thread, i was sort of searching for ages and didnt find any issues like that =/
Ye i mean i have this problem without a sim aswell if i dont factory restore the phone, after i do that without a sim card however the WiFi works great...
so i am kind of reluctant to believe it being a hardware issue due to this, sort of software specific issue (at least i think if it would be hardware related, the wifi would start working as soon as i go to airplane mode/take out the sim and a factory reset wouldnt be necessary), or do you think that my theory is rather flawed in thinking that?
and ye the problem is im in europe now and as the reps at motorola support told me, i would have to send the phone to the US for warranty and they would only send it back to an address within the US =/ i will try my luck with the german and uk support site, to see if they could do something for me.
thanks for your time guys tho
hey guys what do you think if i would use this code:
* 2767 * 3855 #
Think before you give this code. This code is used for formatting the original manufacturer. This will delete all files and settings, including internal memory storage. This will also reinstall the phone’s firmware.
To restore it to manufacturer (will it request an unlock code again after that?) cuz i have 2 codes to unlock but the first one worked, so maybe if i woudl try it with the second one than?
I just unlock my atrix with the code from cellunlock, works great and wifi is fine as well. Would like to know where u get the code, and how it turns out if u try reset to default using the combo. Pls update. Ths
Sent from my MB860 using XDA App
I'm having the same issue of not being able to connect to WiFi.
I bought the phone in Las Vegas with an AT&T - pay as you go (no contract).
I bought an unlock code from SwiftUnlocks, and used my Rogers SIM, which appeared to work. I then rooted the phone.
Using the Rogers network, I've been unable to use any sort of data. Phone calls and texts work fine. Then I noticed that my WiFi was not working properly. It would try to obtain an IP address, but couldn't connect. After several reboots, I got the phone to connect to WiFi for a few minutes.
I just did a factory reset, now I'm unable to connect to any network or WiFi to login with MotorBlur, so I can't really use the phone now.
I'm quite frustrated and not sure what else I can do.
Update - after putting the original AT&T SIM card in, and rebooting several times, the WIFI started working again.
I'm still unable to get Data working over the Rogers network in Canada.
Squig80 said:
Update - after putting the original AT&T SIM card in, and rebooting several times, the WIFI started working again.
I'm still unable to get Data working over the Rogers network in Canada.
Click to expand...
Click to collapse
i am getting my phone in few hours, then i am going to order from cellunlock a code and wait for 2 days to get the lock. unless someone has a spare code he can pm me i would be thankful.
the code is IMEI specific, cant give oyujust spare codes
secondly, to get wifi to work you have to remove your sim card, put in the att or a nonworking sim card and do factory reset, than wifi will work. and you can load all the stuff via wifi, and than just put in your working sim and use the phone as a phone +3g data (the 3g data works great for me to be honest)
oh i got my code from swiftunlock but i dont think that matters, they all get it from teh same provider im pretty sure.
and if anyone si wondering t he sbf update did NOT fix my wifi problem. i ahve tried several wifi fix programs and neither worked aswell, the fxr wifi did some stuff that the phone now sees the networks but still cant connect.
this is to update everyone that i got the phone. had an issue about the screen doing lots of flickering. contacted amazon and sent it back.
in the whole process so far i lost around 60$ between importing and exporting the phone. all in all. i will stick with my iphone 4 for now. its a good phone.
but i cant take this sadness all over again if i imported another phone with an issue with it as well. i am too OCD for my own good.
so true what you say, tho im coming form a nokia 6220 classic, a bit older than the iphone 4
Hey GUYS...
I have the same problem.... My Bell Atrix WiFi works great with my Rogers SIM (I had someone unlock it for me), but when I put in my Qatar Qtel SIM, it stops working, and goes into that connect/scan/disconnect loop.
Any solutions?
Search in the dev forym there is a solution for it
crnkoj said:
Search in the dev forym there is a solution for it
Click to expand...
Click to collapse
Thanks. Found it: http://forum.xda-developers.com/showthread.php?t=1077329&highlight=wifi
help mine stoipped working
[16:53] <arana> hi guys i need help with an unlocked atrix 4g att , that was ulocked with att code, then in order to use recovery i got one of the files here http://forum.xda-developers.com/showthread.php?t=1204500
[16:53] <arana> now it is unlocked but wifi is stuck at obtaining ip address
[16:53] <arana> i tried the solutoin here: http://forum.xda-developers.com/showthread.php?t=1077329&highlight=wifi
[16:53] <arana> but still not working
[16:54] <arana> i'll appreciate any help
[16:56] <arana> if possible i would like to put the stock recovery partition if that would fix things, or unlock it with official sbf but i can find it
[16:56] <arana> i used zomgunlock-lite.sbf to unlock
any help?
my carrier is telcel (mexico) and wifi was working fine before i "unlocked" the phone, thank you for any help

General sudden network loss on vodafone but not others

hey first post on here and really need a bit of help
i've an unlocked galaxy s2. i updated it and its been running 2.3.4 for a while now with various roms over the top
it was XXKG1 and was running perfect on vodafone
all of a sudden it dropped network. still showing bars, but no g,3g or h beside them. can't make or receive calls. says mobile network not avaliable.
i looked immediately at the apn's. cannot see anything wrong with them. reset to default and tried again. no luck. reset phone to default, no luck.
reflashed the stock 2.3.4 using odin, same again.
thought it was therefore a hardware thing so i tried my mums o2 sim card. works perfect. so its something to do with the vodafone settings. tried a different vodafone sim that i have, still same thing. bars but no mobile network
also tried going in and out of flight mode....and double checked just about every setting on the phone
forgot to add that i then flashed the newer XXKG6 firmware and still no luck
created a new apn using the settings from vodafone site, still nothing
help!!
anyone?? please
Vodafone
Same thing happened to me (Vodafone Romania)
Can't really tell yet if it's a phone issue or an operator issue. On Orange it seems to work OK.
There are plenty of threads, including my own, which regard this matter and still no one has a clear view on the matter.
Meanwhile i've sent mine back to service, to rule out the "faulty hardware" problem at least.
Here are some other threads in which this issue is discussed:
http://forum.xda-developers.com/showthread.php?t=1097612&highlight=data#
http://community.vodafone.com.au/t5...laxy-S-II-Internet-Problems/td-p/19563/page/5
http://forum.xda-developers.com/showthread.php?t=1216438

i9300 Unlock Problems

I just bought an i9300 locked to Orange UK. I want to use my o2 UK sim card with it. had to transfer to a micro sim, which went fine and new sim works ok in old phone with adaptor.
first i tried an app called GalaxSimUnlock. This looked like it had done the job, but i couldnt connect to o2. Restored EFS back to original state. I then decided to go with a true unlock via one of those gsm companies, and they sent me a code. Code was accepted, i get bars of signal, but no network connectivity. it says "Unable to connect. Try later" when i try to connect to o2.
My IMEI looks good (353xxxxxxxxx080) but i just cant get on o2. Any ideas where i can go next?
Baseband version is i9300XXLFB, rooted with CF6.4
peterpandemic said:
I just bought an i9300 locked to Orange UK. I want to use my o2 UK sim card with it. had to transfer to a micro sim, which went fine and new sim works ok in old phone with adaptor.
first i tried an app called GalaxSimUnlock. This looked like it had done the job, but i couldnt connect to o2. Restored EFS back to original state. I then decided to go with a true unlock via one of those gsm companies, and they sent me a code. Code was accepted, i get bars of signal, but no network connectivity. it says "Unable to connect. Try later" when i try to connect to o2.
My IMEI looks good ************ but i just cant get on o2. Any ideas where i can go next?
Baseband version is i9300XXLFB, rooted with CF6.4
Click to expand...
Click to collapse
Remove your IMEI from the post. It's supposed to be confidential. Also as for your connectivity problems, try adjusting the APN settings. Can you make a call or text people?
Should you print your IMEI number?
circuit 89 you beat me to it.
jb.traveller said:
Should you print your IMEI number?
circuit 89 you beat me to it.
Click to expand...
Click to collapse
Lol
thought the IMEI might be important. "Not registered on network" when i try to call, texts don't get sent. i did check AP settings with what's on the o2 site and it looked good. will look for more to try
tried using APN settings from ny old phone but still no good. put sim back in old phone to make sure its ok and it is. This should work right? when you get a valid unlock code the phone should then take any sim... right?
I got a T-mobile UK phone, looked. Used the first tool, stuck my old o2 sim in and worked fine!
I don't know why you're getting issues.
SaticICE said:
I got a T-mobile UK phone, looked. Used the first tool, stuck my old o2 sim in and worked fine!
I don't know why you're getting issues.
Click to expand...
Click to collapse
Just tried that app again and it says im unlocked. Still no good though. Think i need an orange sim to make sure that works

"No Sim" Error on AT&T Galaxy Note

All of sudden, my phone does not detect the SIM card anymore. I inserted another good SIM card, and get the same error. I tried to press the SIM card to ensure good contact, but not working. No problem with other function. I inspected the SIM card slot and it appears perfect. The phone has never been dropped or having liquid damage.
I did the factory reset, but could not get rid of the error. Unfortunately I just travelled to oversea...
AT&T agreed to replace the phone, but I will not have any phone on the road.
I am willing to try anything. Does not seem to be software related, but...
Anyone know how to fix the problem?
Thanks.
Hey. There us a thread about this just search for it... don't think they found a solution
Did this happen while your sim was still in the phone or after a removal and replace?
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
My 1717D stpped working too when I installed T-Mobile radio
I bought 1717D with Android 4.o.4 on it , Kernel 3.0.8-perf-1717DTLLF4-CL793911 and tryed to install T-Mobile modem to work with Mobilicity.Ufter this update phone doesnt recognize my SIM card any more.I Tryed all 3 modems with the same results, even though I did changed modem on two previous 1717 phones before.They were with 3.3.5. I thing The problem is in Gingrbred rom this pfone has.Where can I get original Yelus factory Rom ?One more thing is strange: it doesn't show any IMEI ,Baseband shows Unknown.
The phone has ics 4.0.4. I inserted a foreign sim card while traveling abroad and found "no sim" error. Then i switched back to the att sim and found with the same error. I shall say i always use the foreign sim while oversea and never had problem with this phone before. And i always power down, remove battery and then replace sim card.
I reflashed the ics radio and still no good. I can see the imei number in setting. But the baseband is unknown. I read almost all related posts and could not find a software fix.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
hmei888 said:
The phone has ics 4.0.4. I inserted a foreign sim card while traveling abroad and found "no sim" error. Then i switched back to the att sim and found with the same error. I shall say i always use the foreign sim while oversea and never had problem with this phone before. And i always power down, remove battery and then replace sim card.
I reflashed the ics radio and still no good. I can see the imei number in setting. But the baseband is unknown. I read almost all related posts and could not find a software fix.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Click to expand...
Click to collapse
Help!
I have the exact same issue. Unrooted, ICS 4.0.4.
timidtommy said:
Help!
I have the exact same issue. Unrooted, ICS 4.0.4.
Click to expand...
Click to collapse
I had the same issue.
http://forum.xda-developers.com/showthread.php?t=2260171
SENT FROM MY I717
Made in China:{
"No SIM" just happened to me. I recently updated to the official JB stock ROM & Note worked great for about ten days... then just quit and displayed the "No SIM" error message. I first tried just shutting down, removing & cleaning SIM, replacing & rebooting. Nada. Then tried different, fully charged battery. Still no go. Still at home tried a factory reset, removing SIM, clean, & reboot. Gave up and went to an AT&T kiosk. Rep set me up with a new SIM and I'm back in business for two days now. Rep was quite philosophical, "it happens sometime." Still don't know why.

[Q] "Can't connect right now. Try again later." or equivalent in stock, CM9 and CM10

[Q] "Can't connect right now. Try again later." or equivalent in stock, CM9 and CM10
Hi folks! Needing some help, please.
I've googled my problem a lot but couldn't find any working solution. Below is the detailed history.
I have recently bought a Samsung Galaxy S3 GT-i9300, cut my previous SIM, and used it for about four weeks with no problems. During this time, I rooted my phone, backed up the stock ROM, installed CM9 and afterwards CM10.
About a week ago, while using CM10, I switched off airplane mode after about nine hours and the signal power meter was empty. All the services related to my carrier (SMS, 3G, calls) were inoperative. I rebooted the phone, tried removing and reinserting the SIM, with no success.
I tried flashing the previous backups, also with no success, but noticed that while using the stock rom, the signal meter was full. This prompted me to access "Settings > Wireless (...) > More... > Mobile Networks > Network Operators", where to my surprise all the available carriers were listed. I did the same check in the rural area of my town, where I know my carrier does not work, and the cellphone correctly detected only the other three carriers.
These symptoms led me to believe that my cut sim could be the problem. I got a microsim from my carrier, but the problem persisted.
After this, I assumed the problem was software related, googled it and found some recommendations:
Complete wipe and backup restoration: this was not successful with stock, CM9 and CM10.
Complete wipe and stock ROM re-installation with Odin: also not successful.
Modem flashing with Odin: also not successful.
Firmware flashing with KIES: I put the cellphone in download mode and made the firmware recovery procedure from KIES. Also not successful.
Restoration of efs folder and IMEI related issues: I did not have backup of this folder, but the symptoms related to the problem in the posts I found always included the absence of IMEI. When I type *#06# in my phone, I can correctly see my IMEI, so I discarded this possibility. My carrier also informed me that my IMEI is not blacklisted.
I thought of getting a new microsim to rule out any SIM related issues, but still haven't done it.
Information regarding my phone:
Phone model: GT-i9300
Baseband version: I9300UBLG2
Firmware vesion when on stock (from KIES): PDA:LJ1 / PHONE:LI2 / CSC:LJ2 (ZTO)
Could someone please help me? I still have not tried the EFS folder troubleshooting, but the procedures I found were related to problems that did not show the same symptoms as mine. Do anyone have any suggestion? Please tell me if any more information is needed.
Thanks!
Why not just get a micro Sim to begin with....they don't cost anything and it saves a whole lot of hassle. My guess is the sim reader is damaged....IF and WHEN you decide to get a new micro sim, if it doesn't work then that could be the only cause and the service centre your only option. Seriously dude, next time to save yourself hassle....go an get a micro sim from your carrier, I wouldn't even think about hacking away at an old sim because I can't be bothered to walk to a Vodafone shop.
Sent from my GT-I9300 using xda premium
speedyjay said:
Why not just get a micro Sim to begin with....they don't cost anything and it saves a whole lot of hassle. My guess is the sim reader is damaged....IF and WHEN you decide to get a new micro sim, if it doesn't work then that could be the only cause and the service centre your only option. Seriously dude, next time to save yourself hassle....go an get a micro sim from your carrier, I wouldn't even think about hacking away at an old sim because I can't be bothered to walk to a Vodafone shop.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
I have just come back from the carrier store, where I got a new SIM, and the issue persists. I also double-checked any IMEI blocking or problems with my services, and everything is ok.
Coincidentally, a Samsung consultant was around. He checked my phone and talked to Samsung tech support describing the issue.
They do not think it is related to the cutting of the SIM card for two reasons, the first being the ability to locate the carriers, the second being the fact that a visual inspection of the slot and the scratch marks on the SIM card do not indicate a broken or bent contact.
Obviously, he recommended that I send my phone to an authorized Samsung service center for maintenance.
I am still inclined to think it is a software related issue. I will, of course, send my phone to Samsung if it is case, but in the meantime I would like to try new procedures to bring back my phone's ability to connect to my carrier.
Suggestions?
Thanks in advance!
An additional information:
I tried checking my sim through some apps, to confirm there is no damage in the contacts. GalaxSim Unlock is able to detect my sim and correctly show my phone status as unlocked.
Any suggestions on tests?
Sent from my GT-I9300 using Tapatalk 2
Hello!
I'm having the same identical issue with my Lenovo S939. Could you, please tell me if and how you managed to resolve the issue?
Thank you very much!
change to gsm only ? full signal hehe
Cgbspender more info (what you do ect.)
exe98123q said:
change to gsm only ? full signal hehe
Cgbspender more info (what you do ect.)
Click to expand...
Click to collapse
Hi!
I bought S939(not completely new), which from what I understand is not a device that's created for the European market. In order to make it function, I believe that the device was rooted\modified. Now, I can perfectly use it to go on the internet, make photos ecc, but when I put my SIM , I'm unable to "catch" the network of my provider. A message "Can't connect right now. Try again later." appears. I can save numbers on the SIM, for example, but unable to register on the network.
Also on the main screen, I can see writter "Invalid IMEI".
Thanks!
no backup imei ? try flash stock, should repare imei (i think) - but i have phone with mediatek and cant flash (get error)
Was the issue ever resolved, I'm having same problem with my i9300 on virgin mobile. My phone works fine on giffgaff.
ldyte1 said:
Was the issue ever resolved, I'm having same problem with my i9300 on virgin mobile. My phone works fine on giffgaff.
Click to expand...
Click to collapse
Inactive sim?
Beamed in by telepathy.

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