Unable to connect to Mobile Network - Galaxy S I9000 Q&A, Help & Troubleshooting

My phone is failing to connect to the network, its able to pick up the signal but when you try to search for any available mobile networks it gives an error.
I have checked the IMEI number and its fine, also enabled all the radio frequencies.
Please help.

What is the ROM on your phone? Which modem do you use? What did you do last before the error occured first? Is WLAN or BT or strict 2G mode working?

is your apn configured the right way? Have a look at the "Mobile Network" section...

I installed 2.3.3 gingerbread, wireless and bluetooth are working fine and as for the modem i am using zsjv5. initially the phone was stuck in airplane mode then it worked for a while and now it has a circle with a line accross it.
Apologies for the late response.

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Losing Connection (stuck on Edge)

I'm having a weird issue with my signal and the strangest part is I can completely control when it happens. All I have to do is go into Network Settings and enable 3G connections and suddenly I have no network connection OR signal. Once I set it to only use 2G networks then it works as usual, besides not being able to connect to 3G networks.
I'm using CM5 Test 2 which is not the latest. Could it be an issue with my radio?
Bump, please help I'm stuck on Edge....

mda compact v (data nor wifi working)

I have managed to get andriod onto my compact v, but everytime i switch it off windows comes back on, is this normal??? Also it wont let me connect to the internet either by wifi or my data connection. can someone help?
many thanks
This is all normal: all versions are still in beta development, wifi and 3g work with latest builds.
Windows is still the main operating system that gets started when you turn on the phone. You can make it quickly switch to Android by using Gen.Y dual boot. You can find that on the forum here.
You're data problem may be caused by the wrong setting for cdma in your startup.txt. Follow the instructions in the beginning of this thread and on xdandroid.com closely.
gmcrobb said:
Also it wont let me connect to the internet either by wifi or my data connection.
Click to expand...
Click to collapse
Same here.
Korrekt APN Setting appleid.
STARTUP.TXT as well contains ppp.username ppp.password ppp.apn settings.
With force_cdma=1 no connect to any network. Even GSM doesn't work.
With force_cdma=0 GSM Works but no 3G/2G Connections. WiFi as well.
Alright guys, for fixing the wifi issue, before booting haret.exe switch "on" the wifi in WinMo. For 2g/3g data connection try to apply in android the APN settings and restart android, if this is not working try enabling airplane mode and disabling it.

Problem connecting to my network Please help!!

the weirdest thing happened to me, my phpne was working fine, i flashed fearkill fr13 after a full wipe coming from fr12 mcr.
It worked well for a couple of hours and all of the sudden i cant connect to my network. The only way it connects is by enabling 2g networks only and even like that i cant make any calls. I have even tried reinstalling the baseband 405 and nothing works...
My network is fine by the way, its just my phone
Please help me!!
Edit:
A little more info:
I tried a different sim card with the same results
Whenever i try to search for a network it just stays thinking for a while and does nothing
When I try to do it automatically it says it cannot connect to the network at this time immediately...
I managed to make a call on 2g networks only but as soon as i remove the check i cant connect
Edit 2:
Woooooow, this just gets weirder by the second!!
I can connect to the internet with wifi disabled and a clear X on the network as in no network connection... I can browse the internet just fine, NO CALLS though
... after countless Wipes and installing plenty of roms With no luck i gave up and as soon as i Woke up it Was Working again... strange but im happy
Guess it was your network after all
maybe, i had a blackberry beside it with a working 3g connection :S
And no idea how to explain 3g working with no bars and an x on it haha
O have problems with my network connection too.
In some rooms at my house I can get 3G access and in another room only EDGE.
Several times per day I can't get access to the network anyway. The only way to solve the probölem is to restart the phone.
Sometimes my phone tells me it is connected but there is no data transfer for several hours. I noticed that when I got home and many emails from the last hours appeared after being connected to my wifi.
I'm using the MCR but I've also tried the ROM from romkitchen-org. Changing the baseband had no effect.
I'll have a try with the stock ROM. If this would fail too I'll send my phone back to the dealer. I think it could also be an hardware defect.
Greets from Germany

[Q] Mobile Network - Connection Failed

I turned my Mobile Network (3g data) connection off for the night to conserve battery, and the next morning when I tried to connect again via the quick settings, it didn't connect.
Under settings it has the caption, "Connection Failed".
The network was working fine for ages prior to this, and on a few occasions, turning off Mobile Network for the night was fine.
I've tried resetting the phone and taking out the battery + SIM for a few minutes.
I've also tried re-entering APN settings with no luck.
I'm with Vodafone Australia, running the stock 2.3.3 virgin au rom.
Nobody else on vodafone is failing (relatively speaking )
---
Update:
It was a 3G widget messing everything up, thanks letmedanz
Any ideas?
fizzlington said:
I turned my Mobile Network (3g data) connection off for the night to conserve battery, and the next morning when I tried to connect again via the quick settings, it didn't connect.
Under settings it has the caption, "Connection Failed".
The network was working fine for ages prior to this, and on a few occasions, turning off Mobile Network for the night was fine.
I've tried resetting the phone and taking out the battery + SIM for a few minutes.
I've also tried re-entering APN settings with no luck.
I'm with Vodafone Australia, running the stock 2.3.3 virgin au rom.
Nobody else on vodafone is failing (relatively speaking )
Any ideas?
Click to expand...
Click to collapse
Did you try wifi connection?
just wondering..
i am quite certain your problem is with the apn settings.
try deleting the existent apn and enter a new one. save it and try reconnecting...
though not very important, you could check for the port number to enter in the apn settings with vodafone.
also, if you are using any third party apn modification tools or even a simple 3G on-off widget, the settings do get wasted.
if you do, uninstall them, re-enter apn settings and try

[Q] Wifi disconnects data network after gingerbread update (i9000m)

Used Odin to update to gingerbread from froyo on my i9000m the other day. Theres no service here at home unless I put the phone on the bathroom windowsill, so I didn't notice until today when I went to work that I wasn't getting any data network connection. Could make and receive calls fine, wifi works, but no data, so no browsing or facebook or any apps that require it. I called bell and they came to the conclusion that I have to send the phone in for repairs. Thats a absolute last resort, so I tried another factory reset, this time from the recovery menu. The first time, during set up I enabled wifi, this time on a hunch I did not, and it worked. Also note that the first time, the network connected for a split second before disconnecting again. Anyways, I was getting 3g fine, then I tried wifi, and it disconnected again. Turn off wifi, data comes back. Whats up with this?
Did you set your APN? Go
Settings > Wireless and Network > Mobile Network > APN Names
Then hit menu and add a new APN if none are there. If one is there, it's named something like 'browser' (at least that's what mine is called on my Bell i9000m) and I'm wrong. But I had this problem, and this is how I solved it. You can find the APN settings for your network by google-ing "[Provider] APN Settings]", and if you're on bell you can find them here:
http://support.bell.ca/en-on/Mobili..._Nexus_One_for_the_Bell_Mobility_HSPA_network
It says Nexus One but it works for all phones on bell.
settings are exactly as depicted on the bell site, except the apn was called browser instead of bell. changed that, same thing. other suggestions?
Can you tell me the version of gingerbread you're on, where you got the files, any mods to the firmware like pre rooting?
Sent from my GT-I9000M using XDA App
2.3.3, downloaded from here, no mods.
Alright, so totally stock. What's the version code? It should be UGKG3. Have you tried forcing a kies update with a registry hack? Was it one PDA when you flashed it or 3 files?
Sent from my GT-I9000M using XDA App
Yes, its UGKG3. I flashed with the PDA, PHONE and CSC files. I dont really know what you are talking about with regards to forcing a kies update, if you could explain I'd try it out
This has always happened to me, on Eclair, on Froyo, and now on Gingerbread. Whenever my Wifi is active *and* connected to a network, the Data through HSPA is automatically disconnected.
I always thought it was a battery saving feature - if you have Wifi access, and presumably internet access, then you don't need internet through the cell network, right?
So if you're not getting internet access when your wifi is active and connected, then perhaps it's a problem with your wifi router not passing external internet to your phone?
The thing is nothing changed besides the firmware. wifi worked fine here in the house before and no problems connecting to the data network on the go with wifi enabled. I'm really running out of ideas here.
I guess I misunderstood you before. Are you saying you have no data access at all when wifi is enabled, whether or not you are connected to a wifi network? If that is true, something is definitely wrong. That doesn't happen to me with KG3 - just checked.
Have you tried reflashing the modem file? Maybe it got messed up in your flash before?
Sent from my GT-I9000M using XDA App
yes, no data regardless of wifi connected or not, as long as its enabled.
which is the modem file?
just an update, this seems to have mysteriously fixed itself.

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