3G not working. Please Help. - Xperia Arc Q&A, Help & Troubleshooting

Hello everybody,
I have a carrier unlocked Xperia Arc. I had flashed .58 firmware, which I had rooted with Zegrush method (bootloader is locked). It was working fine for a few days, then suddenly the 3G stopped working. I am still getting the EDGE (2G) data transfer.
Since my SIM when inserted into my friends Samsung i9003 was giving a good 3G connection and also my friends SIM when inserted into my Xperia Arc was unable to connect through 3G, I thought that the fault was in my Xperia Arc only.
I have
1) Checked APN settings, they are fine. Downloaded and installed them again to be doubly sure.
2) Did a soft reset
3) Did a hard reset
4) Used repair through PC companion
5) flashed .62 firmware with accompanying baseband
6) flashed .42 firmware with accompanying baseband
7) checked network mode. Its WCDMA(preferred)/GSM. On switching to WCDMA, the 3G connection works for a few minutes and then the whole connection drops.
8) I read in some discussion boards that a similar problem arises if the SIM card lock is used but I am not using it.
Is it a hardware defect? Should I unlock the bootloader and flash one of the custom ROMS?
Any other suggestions?
Please help.
Thanking in advance.

call your network provider and say your problem, if they cant solve your problem or says everything is ok then contact sony ericsson repair center.

Related

No Connection To Network After Update

Hi Frineds,
Sorry for my poor English.. I have a very strange problem after updating new firmaware on my Arc. When i flash new firmaware, my phone doesn't connect to network. I get an error that "sim card preventing to connect with network". I have tried everything but always get this error with new firmaware. Therefore i am still on .145. I have unlocked bootloader, so i use FlashTool. I have tried Global Generic & Nordic versions of new firmaware.
Am i the only one having this problem? Can someone think of any possible reason for that? Any idea?
+1 I am Spanish and I have a Vodafone mobile
Does anyone know any possible reason? Any suggestion, please?
I updated my bro's Arc with FlashTool & he has not any problem with network.. I used my sim card in his Arc & it worked like a charm. What's wrong with my Arc?
Mano1982 said:
Does anyone know any possible reason? Any suggestion, please?
Click to expand...
Click to collapse
Are you preserving your data on flashing? If so that might be the reason.
harfot said:
Are you preserving your data on flashing? If so that might be the reason.
Click to expand...
Click to collapse
No, data wiped But Thanks Harfot you tried to help me out
I was also having trouble with flashing as follows,
After flashing (not wiping user data) generic 4.0.A.2.368 followed by DooMKernel v02 the hole lot was working - not very well but working. Problem was I was not able to install neither BusyBox nor APP2SD.
This was followed by 2 more tries flashing but it never worked but I was shure it could work.
So I flashed the original 3.0.A.2.181, used GingerBreak to root and installed BusyBox. It worked.
Then I again flashed generic 4.0.A.2.368 followed by actual DooMKernel. It worked and BusyBox was still working. Then I installed APP2SD and on reboot that part worked also. At last I restored my user apps with Titanium and the were all moved to the new ext3 partion on the SD card.
Later I have flashed the latest two DooMKernels without any problems.
It might be worth for you to try reflashing.
Reflashing the firmware should solve your problem.
Thanks Harfot & Xtacy! i have actually reflashed my phone multiple times.
1) First Global Generic with FlashTool..
2) Tried Again Global Generic with Flashtool (Without Sim Card in Mobile)
3) Tried WotanServer & flashed Nordic version..
4) Re-locked bootloader & flashed again Global Generic
5) Flashed Nordic Telia version
6) Re-locked bootloader again & changed customization number to Telia Sweden & flashed through SEUS
7) Falshed UK Generic
And result is the same: No network connection
Do you have the possibility to try with another SIM card?
I relocked bootloader today & flashed phone through SEUS first. When i started phone, i got network connection but after just 5 minutes disconnected again & nothing helped. I repaired phone with PC Companion but result is the same..
When i say network connection, i mean GSM Connection.. I can't get GSM connection & therefore can't call someone or send sms..
@Harfot: First i used my SIM in my bro's Arc which is on newest firmaware, I got GSM connection on his Arc with my Sim card.. (Nothing wrong with my sim?)
Then i used his sim card (it was from another operator) in my flashed Arc (on .368) & didn't get any problem, got GSM connection :-/ Now i am confused. My sim card & my phone don't like each other or what?
Mano1982 said:
Now i am confused. My sim card & my phone don't like each other or what?
Click to expand...
Click to collapse
Well, now I am puzzled too.
Try cleaning contacts in phone and suface of sim (no liquid). Try pressing sim card firmly when booting phone.
The solution for me was to change the SIM
@Harfot: Thanks, I'll try again tonight & will follow your suggestion
@neoduende: Thanks, I have actually ordered my service provider to send a new sim card

[Q] Arc S - can't conect to any operator

Hi guys
After an operator unlock processing (Wotanserver) this Lt18i Arc S refuses to conect to any operator.
"Could not conect to selected network"
Already do a factory reset, installed an official update, tested with some Sim cards and no card allow to conect to the operator.
Does anyone knows a way to restore the mobile phone?
Many thanks
You'll need to contact them if reflashing a stock ROM is still giving the error.
Finnaly i got a reply. They suggested to try again the same process. Now aparently the operator is unlocked (in service menu the "operator" option is 0) and the bootloader is unlocked.
Moderator you may close this thread. Many thanks

[Q] [HELP] No 3g for All Carrier and No Signal for Some Carrier After Reboot

Hi, my phone is arc s.
2 Months ago, my phone works fine with any simcard. Until i do the factory reset, then reboot.
After that my phone always shown EMERGENCY CALLS ONLY
I've tried to search for networks but only some networks detected and it's all in 2g network, no 3g network detected. And the worst is my carrier network was not detected even its 2g or 3g network.
Now i use another simcard from another carrier that detected on my phone. At least i can use my phone with only 2g network.
Anyone knows what is causing this?
PS: I've tried all stock rom, some custom rom, all CM rom. Unlock and relock bootloader. But no effect. Please help :crying:
And yes i've enabled 3g network selection in setting
superderon said:
Hi, my phone is arc s.
2 Months ago, my phone works fine with any simcard. Until i do the factory reset, then reboot.
After that my phone always shown EMERGENCY CALLS ONLY
I've tried to search for networks but only some networks detected and it's all in 2g network, no 3g network detected. And the worst is my carrier network was not detected even its 2g or 3g network.
Now i use another simcard from another carrier that detected on my phone. At least i can use my phone with only 2g network.
Anyone knows what is causing this?
PS: I've tried all stock rom, some custom rom, all CM rom. Unlock and relock bootloader. But no effect. Please help :crying:
And yes i've enabled 3g network selection in setting
Click to expand...
Click to collapse
Let's start out with the basics - Questions must be posted to Q&A, not General section.
Second, did you try to repair firmware by PC Companion? Use the method for when phone does not start up. Make sure bootloader is locked first.
Someguyfromhell said:
Let's start out with the basics - Questions must be posted to Q&A, not General section.
Second, did you try to repair firmware by PC Companion? Use the method for when phone does not start up. Make sure bootloader is locked first.
Click to expand...
Click to collapse
Okay, sorry, wrong section, but, how to move it?
not yet. You mean i need to lock bootloader first before repair it with pc companion?
superderon said:
Okay, sorry, wrong section, but, how to move it?
not yet. You mean i need to lock bootloader first before repair it with pc companion?
Click to expand...
Click to collapse
You need to lock bootloader first indeed, otherwise PC Companion will not work.
Someguyfromhell said:
You need to lock bootloader first indeed, otherwise PC Companion will not work.
Click to expand...
Click to collapse
i've just tried that, but still, some carrier networks not detected and no 3g signals.
found same problem here http://forum.xda-developers.com/showthread.php?t=2455724

[Q] [HELP] Need Stock ROM Xperia S LT26i Vodafone Australia

Need help. I need Stock ROM Xperia S LT26i Vodafone Australia. I bought my Xperia S outside Australia and has no "network unlock" prompt. I have checked the imei, it is not stolen nor lost. I have tried several generic stock rom in any version (gingerbread, ics, or jellybean) but the network can't be used. Also, I have tried CM10 for Locked Bootloader but still no network.
The sim card slot is good I think, since it cant prompt for sim card pin lock. The antenna is also good I think, if I search network in setting, it can detect some network but no home icon and can't register to any network.
I have checked SERVICE INFO *#*#SERVICE#*#*, on SIM LOCK, on some ROMs it becomes no "X" (just empty all "[]"), and on other ROMs it becomes all "?".
So, the problem is unusable network, and there is no any prompt to enter network unlock code. And I think flashing stock ROM maybe solve the problem.
I am sorry for bad english.

your sim does not allow connection when i switch to GSM(2g) but WCDMA(3g) connects

Hello,
I have carrier/sim unlocked xperia play r800i bought from orange uk mobile, and i have searched through most of the forums and threads available here about this problem and also on google but i did not find a problem similar to which i am facing. Now the problem, my r800i is unable to connect to GSM network (2G), but connects to WCDMA(3G) and i tried a few solutions like flashing the stock firmware, and also factory resetting the phone but still it did not solve the problem, and the other thing is when i switch my network mode to WCDMA(3G) in settings then i get a perfect network connectivity as well as internet also works using my data plan. And yes i have my bootloader also unlocked as well.
The few things i tried from what i found on the internet, there is this code *#*#4636#*#* and using it i tried turning the radio off and on in GSM/WCDMA both but nothing happened and the same problem, then also i reflashed my r800i to uk generic stock firmware with flashtool but that did not help too, after that i used sony pc companion tool to update and repair my phone with software update so it flashed original stock rom into my phone but still nothing, no GSM connectivity but connects to WCDMA with full network signal. I am not doing any flashing anymore until i know now what the real problem is and may be i think it has something to do with some other rom file or simlock file but i also checked SIM lock option by entering this *#*#7378423#*#* as well as the bootloader show unlocked, and in the SIM lock it shows this:
[] Network 0
[] Network subset 0
[] Service provider 0
[] Corporate 0
[] Sim 0
as far as i know my phone is unlocked by what it shows yet no GSM network connectivity, may be something with the baseband but that has never happened before while using the same baseband, i don't have any clues anymore!, can someone please help me, i would really appreciate it and thanks in advance.

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