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UK SIM not working even though phone is Unlocked

Ok so I am in the UK right now for the summer. Before I left I unlocked my phone and when I got here I went and bought a pay as you go 3 SIM card since they offer all you can use data and all.
The guy at the store said to wait 20 min then call 444 to register the card. After 20 minutes or so I still had no signal on my phone. I went into settings > Wireless > Mobile > Select network and selected 3 but it said "this SIM card could not be registered on this network." Same thing if I selected automatically. So I decided to try a friends Vodaphone pay as you go card in my phone. The Vodaphone card works perfect, I can make calls, send sms, etc.
So I went back to the store the next day to see what they say. The employee put the SIM in her phone and it worked perfect, which means that there is something wrong with my phone.
I went back and decided to unroot then reroot and unlock. After encountering multiple problems with that I have finally gotten back to root and unlock but the 3 SIM card still does not work while the Vodaphone one does.
Is there anything I can do from here to get the 3 SIM to work?

What rom are you using?

sorry forgot to mention that. Right now I am on the stock rom and stock radio. I tried flashing another radio and using the SIM card on Leedroid and RCmix HD and nether of those worked.

Have you try selecting different band like EURO band (may be worth a try )

pakxelaos said:
Have you try selecting different band like EURO band (may be worth a try )
Click to expand...
Click to collapse
not exactly sure what that means, do you have a link handy, please? I am willing to try anything, as long as it does not brick my phone.

Open Phone Dialer
Dial: *#*#4636#*#*
Press Phone Information
Hit Menu
Choose Select Radio Band
Choose EURO Band
Turn on Airplane Mode for about 20 seconds and then turn it off

pakxelaos said:
Open Phone Dialer
Dial: *#*#4636#*#*
Press Phone Information
Hit Menu
Choose Select Radio Band
Choose EURO Band
Turn on Airplane Mode for about 20 seconds and then turn it off
Click to expand...
Click to collapse
No still did not work thanks though for trying. I also restarted the phone, reselected the EURO band and put on airplane mode but still nothing.
Any other suggestions?

dreshden said:
No still did not work thanks though for trying. I also restarted the phone, reselected the EURO band and put on airplane mode but still nothing.
Any other suggestions?
Click to expand...
Click to collapse
Have you tried the 3 SIM in a different phone perchance? It seems like the unlock and the Inspire are working as the Vodafone SIM worked.

I agree, maybe there's something different about that sim that the Inspire can't read it.
id10terrordfw said:
..
It seems like the unlock and the Inspire are working as the Vodafone SIM worked.
Click to expand...
Click to collapse

id10terrordfw said:
Have you tried the 3 SIM in a different phone perchance? It seems like the unlock and the Inspire are working as the Vodafone SIM worked.
Click to expand...
Click to collapse
Yes I took it back into the store to see what they would say/try to get a refund. They store employee put it into her phone and one of her coworker's phones and the it worked fine in their phones. I do know exactly what kind of phones they had since they were for sure Euro only models that I have never seen before but one of them was a Samsung with a touch screen and keyboard, much like a blackberry. Not really relevant to this, I think.
They would not give me a refund since it work in their phones. Which is why I am here stuck with a 3 SIM card and looking for help to get it fixed

Well that at least establishes where the problem is. When you boot the phone with the 3 SIM, does it give a "no sim" error, no signal at all , or no data access(voice/999 still work)?

When I first put in the sim it gives me a popup saying "Unable to detect your SIM card. Please make sure that your SIM card is properly inserted and restart the phone." It gives two options, Shut phone down and Restart. It also says this when I put the Vodaphone card back into the phone. I just have to restart the phone and I will have signal when I have the Vodaphone card in.
So I click restart. After it reboots, I have no signal (grayed out bars with a small 'x' above them). In my notification tray I have 2 new notifications. One saying that my SIM card has changed and another saying there is a sign in error to my gmail account.
If I click on the "SIM car changed" notification it gives me a pop up saying "You have insterted a new SIM card. Your phone will change the following settings according to your SIM card: bookmarks, shortcuts, wallpapers, ringtones, language selections, and input settings. Are you sure you want to replaces these settings on your phone?" Then it gives me 3 options, "Yes" "No, later" and "No."
I do not get any other notifications or error messages after a restart.

Backup your ROM then try flashing cm7 and see what happens, with the 3 SIM in the phone.
Sent from my HTC Inspire 4G using XDA Premium App

Ok I wiped everything and installed nightly #77 with the 3 SIM card in the phone the whole time. It has been 2 hours and I have not taken out the card yet and it is still not receiving service. So I have no idea where to go from here.
If there is nothing else I guess I will just have to suck it up and go spend some more pounds and get a Vodaphone card for myself.
Thanks for the help and if there is anything else you can think of for me to try please, I am open to all suggestions!

dreshden said:
Ok I wiped everything and installed nightly #77 with the 3 SIM card in the phone the whole time. It has been 2 hours and I have not taken out the card yet and it is still not receiving service. So I have no idea where to go from here.
If there is nothing else I guess I will just have to suck it up and go spend some more pounds and get a Vodaphone card for myself.
Thanks for the help and if there is anything else you can think of for me to try please, I am open to all suggestions!
Click to expand...
Click to collapse
If they won't swap it out for you than I would say that is the best bet. I know for a fact that cm7 supports 3. There has to be some other factor affecting it. Did you have the 3 guys try their SIM cards in your phone?
Sent from my HTC Inspire 4G using XDA Premium App

No they did not, that is the only thing. They never put their card into my phone.
*sigh* I was really hoping for unlimited data because that would have been soooo helpful to be able to use maps while wandering the city. I guess this just was not meant to be.
Thank you so much for all the help! I really appreciate it!

[Q] Xoom 3g sim card problem

Wondering if anyone can help, im using team Eos European 3g rom zoom. now i tried 1 sim card and the 3g works perfectly but when i try my other sim, i enter the pin code on screen , it accepts it, then immediately says "Sim card removed, the mobile network will be unavailable until you restart...." .
The sim card definitely isnt broken because it works in my phone and 3g modem on my pc. I've tried restarting the xoom with Wifi off and no luck.
Thanks

shaunbrookes said:
Wondering if anyone can help, im using team Eos European 3g rom zoom. now i tried 1 sim card and the 3g works perfectly but when i try my other sim, i enter the pin code on screen , it accepts it, then immediately says "Sim card removed, the mobile network will be unavailable until you restart...." .
The sim card definitely isnt broken because it works in my phone and 3g modem on my pc. I've tried restarting the xoom with Wifi off and no luck.
Thanks
Click to expand...
Click to collapse
how old is that "other" sim card? Reason I'm asking is that sim cards use different voltages and old cards tend to cause problems in modern devices.
Around here, providers usually swap sims for free if you say that you've got a problem with one, so I'd go for an exchange if your sim is older that maybe two years...

llama-power said:
how old is that "other" sim card? Reason I'm asking is that sim cards use different voltages and old cards tend to cause problems in modern devices.
Around here, providers usually swap sims for free if you say that you've got a problem with one, so I'd go for an exchange if your sim is older that maybe two years...
Click to expand...
Click to collapse
Its actually brand new, got it on the weekend. It works perfectly everywhere else. I think i'll go to the provider anyway today and see if i can try a sim swap.

This really is baffling me now. I went back to the providers store and tried a different one of their sim cards and it doesnt work either. I just cant understand why my xoom can read certain providers sim cards and not others? (Its definitely not network locked). Could it possibly be the type of sim card (as in a 32k vs 64k etc)?
Any help would be greatly appreciated

Hello, I purchased a galaxy tab 7 plus in Hong Kong. All work great until 2 days ago,

Hello, I purchased a galaxy tab 7 plus in Hong Kong. All work great until 2 days ago, I inserted another Sim card then it now says no Sim card. I tried with several other Sim cards but no luck, I did a factory reset, flashed with firmware from Sam mobile but still no luck, I don't know what else to do before I send it to Samsung for repair that gonna be expensive, help is greatly wanted, thank you.
Sent from my GT-I9100 using XDA

Try to insert the sim card with the tablet on. Does it restart? If not are you sure you are inserting it with the correct side?

Hello, thanks for the answer, I tried all that already, anyway the Sim only fit in one position so you cannot take wrong.
The tab restarts when inserting card yes.
I tried also taking the battery out for 10 mins... Clean the head of the Sim compartment but no luck.
Sent from my GT-I9100 using XDA

You took the battery out? how did you do it?
P_

sim card
pakalrtb said:
You took the battery out? how did you do it?
P_
Click to expand...
Click to collapse
Just removed the back by pushing under the sd card slot then inserted a flat tool to unclip the lid, then removed the batery connector.
However i still have the issue, its driving me crazy as it is my working tool...

does the original SIM still work in it?
perhaps try flashing original & latest frimware updates for new/different modem.
I know one chinese version of tab plus has locked bootloaded dud to China's restrictions, I would not be surprised if they have locked down modem as well.
And for the heck of it you could always try Galaxy S Unlock app, to be certain you're unlocked.
Strongly suggest backing up /EFS folder (twice) just in case.

Thanks for the suggestion, I flashed the device twice already but there is only one file. Could you direct me to the files you are referring to please I'll take a look when I'm back home, thanks again.
Sent from my GT-I9100 using XDA

I would try EVERYTHING else before flashing a new modem. Toggle airplane mode. disable/enable packet data, etc.
First, does the original SIM still work?
If so I would give the Galaxy S Unlock a shot for the heck of it.
These other SIMs have you tried them in other devices to either make sure they work or activate them?
did you purchase device on a SIM contract??

sim issue
The original sim does work, i have put it in other phones and it works fine, i have also tried other sim but still same issue, message still say "please insert sim card"
I have purchased the tab sim free in hk so no, no contract, it did work fine since december until 2 days ago where i input a data only sim card, when i insert sim card it does reboot, meaning it detects the card in the socket but thats it.
Concerning Galaxy S Unlock my tab is not rooted i have used only legit firmware until now so im not sure about that.
PS: looking at my phone servie status it says:
Service State: Out of service

Are you sure you havent been sold a bad or expired sim card?
Id try to give samsung customer support a call at least, they will probably tell you to send it to them anyway.
Can you try exchanging this for another one where you puchased it?

Well, i bought it during my holidays in hk but i live in norway, so... bit difficult to chage it, the sim card works just fine in other devices so it should work in tab.
I tried the galaxy s unlock and during step 1 it says error for efs backup, so either because im not rooted or because my efs is corrupted.

Probably because youre not rooted.
Im wondering if the SIM could be from a small provider which isnt recognized by the device?
It should at least dected then say something like network provider unrecognized, etc.
I really dont what to say.
I would keep trying other sims, try to get a 5$ pre pay from a major carrier like O2, 3, tmobile, etc. not sure what carriers you have over there.

Well i use Telenor which is the biggest and also quite big in europe, i will call customer service tomorrow and hear what they say, but i fear its gonna rip my pockets...

richardfv said:
Well i use Telenor which is the biggest and also quite big in europe, i will call customer service tomorrow and hear what they say, but i fear its gonna rip my pockets...
Click to expand...
Click to collapse
did you push the simcard all the way to the bottom of the slot?
I need a pen to push it....so I wonder if you insert your sim card properly.

dannyyung said:
did you push the simcard all the way to the bottom of the slot?
I need a pen to push it....so I wonder if you insert your sim card properly.
Click to expand...
Click to collapse
yes, since the first time, repair shop said they cannot help since device has been purchased in hong kong...
No solutions until today...

Solved
After dismantling the tab completely (hard work guys...) i confirm that the sim card reader is defect, the cushions that reads the card did not press completely on it so i applied a temporary fix by adding an extra layer to thicken the card so it can press correctly on the cushions. I did try this fix before with the tablet in one piece, however i could not get it to work correctly.
Anyway thanks for your help and i'm happy that i can use it again

Phone wont register on network!! Need Help!!

Hello guys!
I love this phone, but i am having problems getting it to function properly here in Sweden. It was originally bought on a contract and simlocked to Tre (carrier). I bought the phone second hand from swedish ebay (much cheaper than brand new) with the intention of unlocking it and using with my carrier (Telenor).
Tre would not unlock the phone for me (have to see out 24 month contract) so i unlocked it myself using the services of unlockscope.com. The process was successful, and the phone no longer asks for a network unlock code when using previously locked sim.
The problems start now.. It just refuses to register on the network! If i switch the phone off, insert sim and start, then i get a brief flash of the carrier name in top left corner (2 seconds), and then it goes back to saying emergency calls only.
I cannot register manually, i have tried hundreds of times, even though the carrier appears in the list. The apn settings are also correct for my carrier.
I have also contacted my carrier and they dont understand the problem. I even had them run a check on the imei to see if it was blocked on their network (possible stolen phone) but it came back negative, no blocking whatsoever!
The weirdest thing is that it works when using my brothers Tele2 sim card! The phone registers in seconds and displays a nice 4g symbol next to the signal indicator! A thing to note is that this Tele2 nano sim fits very nicely in the tray and stays in place, whereas my telenor sim is extremely loose and falls out, though i have tried taping my sim in place with no success.
Can anybody relate to this problem or think of a possible cause? I dont know what to try anymore! I'm thinking that there must be something wrong with the phone, but then why does Tele2 work perfectly??!!
Sorry for the long post! I appreciate any help offered!

vinnibinni said:
Hello guys!
I love this phone, but i am having problems getting it to function properly here in Sweden. It was originally bought on a contract and simlocked to Tre (carrier). I bought the phone second hand from swedish ebay (much cheaper than brand new) with the intention of unlocking it and using with my carrier (Telenor).
Tre would not unlock the phone for me (have to see out 24 month contract) so i unlocked it myself using the services of unlockscope.com. The process was successful, and the phone no longer asks for a network unlock code when using previously locked sim.
The problems start now.. It just refuses to register on the network! If i switch the phone off, insert sim and start, then i get a brief flash of the carrier name in top left corner (2 seconds), and then it goes back to saying emergency calls only.
I cannot register manually, i have tried hundreds of times, even though the carrier appears in the list. The apn settings are also correct for my carrier.
I have also contacted my carrier and they dont understand the problem. I even had them run a check on the imei to see if it was blocked on their network (possible stolen phone) but it came back negative, no blocking whatsoever!
The weirdest thing is that it works when using my brothers Tele2 sim card! The phone registers in seconds and displays a nice 4g symbol next to the signal indicator! A thing to note is that this Tele2 nano sim fits very nicely in the tray and stays in place, whereas my telenor sim is extremely loose and falls out, though i have tried taping my sim in place with no success.
Can anybody relate to this problem or think of a possible cause? I dont know what to try anymore! I'm thinking that there must be something wrong with the phone, but then why does Tele2 work perfectly??!!
Sorry for the long post! I appreciate any help offered!
Click to expand...
Click to collapse
Hi mate
Maybe is the sim card......did you try your card in your brothers phone??

MAX 404 said:
Hi mate
Maybe is the sim card......did you try your card in your brothers phone??
Click to expand...
Click to collapse
Hello
Already tried that and it works fine I also recieved a new sim from my carrier and that works fine in other phones but not in my S7

vinnibinni said:
Hello
Already tried that and it works fine I also recieved a new sim from my carrier and that works fine in other phones but not in my S7
Click to expand...
Click to collapse
Hi
This is getting weird , did you try to do a factory reset from recovery also wipe cache and if that do not work you could also try to flash the firmware of the phone again ( odin)
http://forum.xda-developers.com/galaxy-s7/how-to/official-stock-firmware-update-odin-t3369431
Just in case is some odd firmware problem , back up everything important first...just in case

MAX 404 said:
Hi
This is getting weird , did you try to do a factory reset from recovery also wipe cache and if that do not work you could also try to flash the firmware of the phone again ( odin)
http://forum.xda-developers.com/galaxy-s7/how-to/official-stock-firmware-update-odin-t3369431
Just in case is some odd firmware problem , back up everything important first...just in case
Click to expand...
Click to collapse
I have already tried flashing with stock swedish firmware using odin (G930FXXU1APEQ_G930FVDS1APF1_VDS) but same problem persists.. One weird thing to note though is that even though i do a clean flash with unbranded swedish rom, the phone installs some carrier specific apps from the original carrier the phone was simlocked to upon first boot. How can that be??
Maybe its worth trying an international version?
Thanks for the suggestions

vinnibinni said:
I have already tried flashing with stock swedish firmware using odin (G930FXXU1APEQ_G930FVDS1APF1_VDS) but same problem persists.. One weird thing to note though is that even though i do a clean flash with unbranded swedish rom, the phone installs some carrier specific apps from the original carrier the phone was simlocked to upon first boot. How can that be??
Maybe its worth trying an international version?
Thanks for the suggestions
Click to expand...
Click to collapse
That is odd , yes try a totally different rom just to see how it turns out , even from another country it should not make any difference for the phone and connect easily to a network.
check this thread also
http://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516
EFS is a very important partition , is where the modem information is.......maybe?

MAX 404 said:
That is odd , yes try a totally different rom just to see how it turns out , even from another country it should not make any difference for the phone and connect easily to a network.
check this thread also
http://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516
EFS is a very important partition , is where the modem information is.......maybe?
Click to expand...
Click to collapse
I will try with an international firmware and see if there is any difference.. if not i will follow that guide on efs partition in case that is corrupt.. This is so frustrating!!!
Is it at all possible that a very loose fitting sim could be the problem? As the simcard of the carrier that works fits very snugly in the sim tray.

vinnibinni said:
I will try with an international firmware and see if there is any difference.. if not i will follow that guide on efs partition in case that is corrupt.. This is so frustrating!!!
Is it at all possible that a very loose fitting sim could be the problem? As the simcard of the carrier that works fits very snugly in the sim tray.
Click to expand...
Click to collapse
I get you mate........sim problem, yes very possible !!!!

MAX 404 said:
I get you mate........sim problem, yes very possible !!!!
Click to expand...
Click to collapse
I have now found out that the phone is stolen!!! So that explains everything. I dont know why the carrier couldnt see that the first time they checked, would have saved me days of frustration!!
It has been reported to the police here in sweden, so hopefully they will find who is responsible and i can get my money back!
Thanks for the help guys, very much appreciated even though it was an impossible case to crack!

vinnibinni said:
I have now found out that the phone is stolen!!! So that explains everything. I dont know why the carrier couldnt see that the first time they checked, would have saved me days of frustration!!
It has been reported to the police here in sweden, so hopefully they will find who is responsible and i can get my money back!
Thanks for the help guys, very much appreciated even though it was an impossible case to crack!
Click to expand...
Click to collapse
so sorry mate
you cant trust anyone........very sad
thanks for letting us know

vinnibinni said:
I have now found out that the phone is stolen!!! So that explains everything. I dont know why the carrier couldnt see that the first time they checked, would have saved me days of frustration!!
It has been reported to the police here in sweden, so hopefully they will find who is responsible and i can get my money back!
Thanks for the help guys, very much appreciated even though it was an impossible case to crack!
Click to expand...
Click to collapse
Oh no. Have the police found out the thieves? I think my phone may be stolen too because I have the exact same problem.

SIM card not allowed after coming back from Japan

Hello guys,
Im coming at you for a question which I can't have any answer.
I bought a Note10 Plus in October to somebody on the web, the phone was brand new (on its original sealing and packaging) and working perfectly. I was first on Three network, the phone worked, then I switch on GoMo, working perfectly too. On the 10th of November I traveled to Japan with a local sim card (Docomo) and same, all working. But yesterday, I came back to Ireland where I live, and still as of today, the phone show me 'SIM 2 not allowed'.
The phone is unlocked, I've checked with the Samsung support and they confirmed it (but didn't bring me helpful troubleshooting steps). I've contacted my carrier too who said that there is no issue on my account, and they will send me a new sim card too.
I'm not expecting it to work though, as the SIM card is working on the iPhone X of my gf, and her sim card is not working on my phone too. So it's only on my Note 10+.
I've tried to remove the sim and reinsert it, restart it, reset network settings, check the date and time, nothing to do, all go to the same error.
After making research, I tried to check some IMEI Blacklist check websites, but I don't trust them as I don't know where these infos comes from, but one catch my attention because it told me that the phone was blacklisted : https://www.imeipro.info/
All the others says that the phone is clean. Again, that's why I don't really trust it, and my carrier didn't mention any block. I'm still curious why my phone appear as blacklisted so I send them an email to try to know more.
I receive signal too, but can't send/receive calls or text, and I don't have access to data neither.
So now I have my phone with no any SIM working, and I don;t know what to try to get my phone working again.
I think I've explained all I did today, I don't know what to do more, I don't have any idea of what's going on with the phone, that's why I need your light to see if you can help me to find a way.
Thank you guys, I hope to hear from you soon!

From the sounds of it, it sounds like it's been blacklisted, that's my guess. Do you get any message when you insert the sim? I had a similar thing happen to me, turned out the guy I bought the phone off on Ebay didn't pay he's bill and phone wouldn't text or make calls anymore. O2 was the company that barred the phone, and they couldn't help me even though I had proof I'd purchased the phone from the guy, only he could sort it out as it was he's account. Anyway thankfully PayPal came to my rescue, they just needed proof it was blacklisted, carphonewarehouse did a check and printed out the results for me thankfully as I knew the guy that worked there. I got a refund and promised myself I'd never buy a phone off Ebay from a personal seller, if its a business account then maybe. Awful experience though. I hope you get this sorted.
I'm guessing you've never rooted the phone or flashed it as that can sometimes delete the efs folder which causes the phone to have no imei.

Thanks for your answer !
No usually I root all my phones but this time I wanted to keep it as normal, because tthe phone looks like there's nothing more to improve to me (except a little bbit the camera when the light is low..)
I didn't knew that it could cause such things ! I should have done that
Honestly that was the first time I bought the phone to somebody, and more of that, the phone was sealed on the original plastic with the label ''eu sim card only''. So I was trusting it, even if I know, that doesn't mean it's safe behind that.
Since I've posted the message, I contacted few carriers, like mine GoMo, and they dont know anything about the blacklisting (I was surprised) then I contacted Three, they told me that the device does not belomg to the; so they can't check.
I tried Eir, and they refused to give me infos for data protections, which I think is stupid because the phone is not a personal information who could reveal an identity but anyway. I didn't though about Carephonewarehouse, I will visit them because it seems like this is the best idea.
The weird thing to me is still that it didnt worked suddenly... I was in the flight and this is when I came back that it didn't worked. Well, maybe that was a bad hazard.
Something I've discovered yesterday more of that is when I have this issue, turning off the 4G and only allowing 3G/2G will allow me to use the data. Still no phone or text, but the phone is detecting the H+ signal and I'm free to go on the web.
Yes for your question, the issue happened instantly when I insert the card on the SIM1 with the error SIM not allowed, the SIM 2 slot works perfectly, that's what I'm using for the moment but I can't use any SD card at the same time, so it bother me. :/
Thanks for sharing your experience, then I know a little bit fore of what to do. I wanted to go to the police but I don't want to spend 2 hours there. Maybe I'll think of it as a last resort...

https://www.google.com/amp/s/forum.xda-developers.com/s10-plus/help/sim-1-allowed-t3945371/amp/

I just came from Japan as well I had the same problem but with my Sony Xperia 1.
I bought it from the states and I took vacation to Japan and used their sim card.
When I came back here in Florida I switched back to my at&t sim card I couldn't make calls or texts only data works for some reason I tried everything I used sim card on other phones (sim card is fine)
I tried everything, nothing worked !
I factory reset the phone and it worked, fixed the problem (it's strange because I used Galaxy s8 also with that sim card and it's working fine)
My Sony Xperia 1 had similar problem to yours
I don't know if this will help you to be honest but I had kinda same problem.
Hope you solved you issue.

jadaress1 said:
https://www.google.com/amp/s/forum.xda-developers.com/s10-plus/help/sim-1-allowed-t3945371/amp/
Click to expand...
Click to collapse
Thank you, but unfortunately the phone has been bought from someone as I said, and the suggestion there doesn't help :/
cali1986 said:
I just came from Japan as well I had the same problem but with my Sony Xperia 1.
I bought it from the states and I took vacation to Japan and used their sim card.
When I came back here in Florida I switched back to my at&t sim card I couldn't make calls or texts only data works for some reason I tried everything I used sim card on other phones (sim card is fine)
I tried everything, nothing worked !
I factory reset the phone and it worked, fixed the problem (it's strange because I used Galaxy s8 also with that sim card and it's working fine)
My Sony Xperia 1 had similar problem to yours
I don't know if this will help you to be honest but I had kinda same problem.
Hope you solved you issue.
Click to expand...
Click to collapse
Thank you for that, I've tried this yesterday after a backup, I used the sim card with the phone completly as new (well, I've restored it from the settings, so I don't know if it was the good way) and it didn't worked.
I think I will try carephone warehouse as jadaress1 requested, it might give me lot of infos there. Im also starting thinking that the phone is carrier blocked, but I can't see any reason why the phone was new and already unlocked so I don't see any reasons...
I'll let you know