Roaming Constantly - Galaxy S II Q&A, Help & Troubleshooting

Hey all! I have a very odd issue with my SGS II i can't figure out.
I bought a SGS II from Telstra outright and rooted it, installed CWM, installed CM9 and had been happy for about a month. Last night i flashed a few different roms to try them out (being a massive MIUI fan). Anyway, after flashing a few roms and playing around a bit i realised my phone was no longer connecting to the Telstra network and the signal icon was grey and no apps could use data and only rarely would it check for messages, often getting 3 or 4 sms's at once.
So i flashed back to CM9 today and still have more or less a mp3 player since it refuses to connect to telstra.
I have tried many many modems including all of the telstra shipping ones and wiped before and after each to make sure they stuck. (An idea from whirlpool in my readings).
Also i have tried many different roms.
Can anyone shed any light on what is wrong? I should get full reception from telstra in my room, it being the dominant network in Australia.
Also, when i choose search for networks it just keeps saying it is looking for networks until you quit it, and i have full bars on the roaming network, presumably optus or vodaphone.
Thanks!

Okay, turns out i just needed to re-seat my sim card (remove and put back).
So yay! Fixed!

Related

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

Random No Service Error ?

I've had this Galaxy S II since launch and everything was fine upto the first ICS beta firmwares, after that I just keep getting random no service which is starting to get annoying.
I've tried reinstalling older firmwares which didn't produce this problem in the past but it still happens and I've tried different modem files.
It's not signal strength as it's usually very strong.
Any suggestions guys? I could really use some help.
ive had similar issues on three uk.
My problem was my phone was picking up 2 cell towers and automatically connecting to the one that was furthest away, thus a crap signal all the time and sometimes nothing.
I solved it by going to the mobile settings, doing a manual carrier search where indeed three appeared twice, i tried them both to see which was the better one, then i manually registered to that one.
Since then ive had no problems at all.
I'm with giffgaff and I selected O2 manually, still getting no service.
Thx for the suggestion though.
Bump
Would like to sell this phone soon, so need it working normally.

Keep losing data connection.

I have an unlocked unrooted S3 on Vodafone UK. This issue has been happening for the last few days whereby i have full 3G/H+ connection, but absolutely no data is working. No email, no websites loading, no whatsapp, nothing. The issue goes away as soon as I restart my phone, but then it comes back after a few hours.
Has anyone experienced this, and if so, how have you fixed it?
Go back to your network/phone provider .
Or flash different modem .
jje
I am having this issue too. I may be wrong, but i realise this happens if i turn off my Wifi, the 3G will not want to connect to the 3G network.. Anyone else having such problem?
By the way mine is International version (Location: Singapore)
I'm having a similar problem where I have a good 3G/H/H+ connection but data seems to drop intermittently across all applications - I get the same sort of error message in browsers/facebook/twitter that you receive when you have no signal.
Anyone have anything similar and know of any fix?
I am not having such issue so far. I been updating my SGS3 using over-the-air update. I guess the MODEM has been updated as well.
Go to market and download "fast dormancy"(by gorkhanmoral) then disable it and reboot.
Check if your speed has improved,if it got worse then enable it again.
U need ROOT to use this tool.
I it didn't help, then flash a different modem
This is good modem
Cwm flashable
flame1845 said:
I have an unlocked unrooted S3 on Vodafone UK. This issue has been happening for the last few days whereby i have full 3G/H+ connection, but absolutely no data is working. No email, no websites loading, no whatsapp, nothing. The issue goes away as soon as I restart my phone, but then it comes back after a few hours.
Has anyone experienced this, and if so, how have you fixed it?
Click to expand...
Click to collapse
have you got any battery saving app like juice defender installed in your phone?
Is mobile data working at all? or is it constantly "uploading" but never "downloading" (up arrow lights but not down).
If what I just described is your issue then this is a network issue relating to android in general.
Basically your phone will be connected to two radio towers and gets confused as to which one it should use, rebooting or flight mode may help force it onto one tower or you may have to speak to your carriers "high network technical team" or whatever they are called for you to get them to force it onto one tower.
I had this issue on the HTC hero (a long time ago now) and it took 9 months for Orange UK to work out what was going on.
and it took 9 months for Orange UK to work out what was going on.
Click to expand...
Click to collapse
Congrats. Orange Luxembourg (my gf's network provider) still hasn't got a clue.. But they seem rather clueless about everything except writing invoices.
Flashing an Asian modem on her S2 made the issue far less prominent since they seem not to get confused by antenna ping-pong. (Tango Luxembourg, my carrier, has this issue too in the main city)

[Q] Weak/no signal

Hey,
I've got a Galaxy S2 that used to be locked on Vodafone AU but was unlocked with an unlock code from their website.
I've put a Telstra SIM card in and the phone worked flawlessly.
After I've put CyanogenMod (latest) on it. I hardly get any signal indoors as well as outdoors most of the time. Often it show no signal at all and only emergency calls.
I've tried different modems over the last few days without any luck.
I put a stock Vodafone on it again without any luck too.
My SIM card was replaced by Telstra already, seemed to improve a little bit, but its back to no working again,
I've put my SIM in another S2 and it had full signal this was in the same room where my phone doesn't show almost any signal.
I've seen lots of posts here and other forums with similar issues, but no one seemed to have a solution really...
Does anyone has any suggestions?
Regards
If you bought it from Vodafone either on contract or outright (did Voda even sell them outright ?), there's a fair chance you have an I9100T, which is slightly different from the I9100 so far as the output of the radio is concerned & the modems which work well with it.
Check the bits & pieces you got when you bought the phone (box, receipts, sticker on the phone chassis under the battery). If you do have an I9100T, it's time to try more modems; in particular start with modems bundled with stock roms released by carriers who sold the I9100T (in Australia, Israel, Thailand & NZ). If you try all these & still have no joy, try every & any modem you can get your hands on (there are dozens).
If you have an I9100, it's still time to try more modems, tho the last sentence in my previous para holds I.E try any/every modem you can get your hands on.
And as I've said to several people with similar problems on here lately, I'm (again) surprised that it's assumed this is a phone issue when everything you've said points to a carrier side issue, or at the very least the phone not playing nice with the carrier's setup (gear/spectrum used at individual cell) - I.E it worked for a while then didn't work.
You haven't found a simple solution because there isn't one. All you can do from your end is keep trying modems. This has been the case since the S2 was released 2 yrs ago.

[Q] 3G not working

Hi there.
I have Lumia 920 Black on EE in UK.
Last month when Amber (french one) got leaked, I installed it and tried straight away.
It wasn't big difference to me in fact it had a bug where if I create an all day calendar entry using google account (not tried with Live account),
it will save the even entry as day before?
It bugged me so much so I decided I will install EURO Dev version.
So I did and everything seem to work fine untill I go outside my house.
I kept on getting no signals. And when I had signal it was constantly on EDGE. Never on 3G.
I did reflash and restart and all it doesn't seem to help. When I restart the phone I get 3G briefly for seconds until it loses service totally then come back with full EDGE signal.
I have found a old firmware RM821_1232.2109.1242.1010_RETAIL_eu_euro1_342_10_97021 and flashed it. And did update through OTA.
Still no 3G. I called EE today for help. They told me it could be the sim.
So I tried on my old iPhone 4 and its all good. I get full 3G.
Anyone know what may be the problem? And if EE offers a repair, will they found out that I've playing with flashing the device and tell me its not covered by the warranty?
Thanks you all!
over 60 views and no reply?
langsalang said:
Hi there.
I have Lumia 920 Black on EE in UK.
Last month when Amber (french one) got leaked, I installed it and tried straight away.
It wasn't big difference to me in fact it had a bug where if I create an all day calendar entry using google account (not tried with Live account),
it will save the even entry as day before?
It bugged me so much so I decided I will install EURO Dev version.
So I did and everything seem to work fine untill I go outside my house.
I kept on getting no signals. And when I had signal it was constantly on EDGE. Never on 3G.
I did reflash and restart and all it doesn't seem to help. When I restart the phone I get 3G briefly for seconds until it loses service totally then come back with full EDGE signal.
I have found a old firmware RM821_1232.2109.1242.1010_RETAIL_eu_euro1_342_10_97021 and flashed it. And did update through OTA.
Still no 3G. I called EE today for help. They told me it could be the sim.
So I tried on my old iPhone 4 and its all good. I get full 3G.
Anyone know what may be the problem? And if EE offers a repair, will they found out that I've playing with flashing the device and tell me its not covered by the warranty?
Thanks you all!
Click to expand...
Click to collapse
I know the issue exist on the ATT Dev Rom, you just have to go into the Access Point app in the settings and pick the correct APN, (the flash defaults it to the wrong one. ) but I don't know if that's the case for the EE version. I suppose is possible, it can, and is suppose to load, the APN from the Sim, so if it worked with the iphone sim then check those settings.
Thanks for you reply. Did what you said but it did not help at all. It's not like my data isn't working. It's just on EDGE all the time. Sometimes I don't even get calls through and later get message from EE saying I had a miss call. Called Orange (runs on EE) about it and they said maybe its my sim. So tried it on my iPhone and I get 3G straight away. Need to ring them again. But their call waiting time is ridiculous. Called them yesterday and call queue was 2 hours!!

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