Hello everybody!
I have a Galaxy S4 (GT-i9505) which shows "No network service", even though I almost always can access internet. However I can't make calls or send text messages. I just realized it shows IMEI 0/01 when i dial *#06#. The device status says official, but I can't update the phone (currently on android 4.2.2). When I try to do it trough Kies it says that the firmware isn't supported. Does this mean the previous owner has flashed the phone? The problem with calling and texting only seems to appear with some carriers.
I don't want to void the warranty if it isn't already and I have no experience of flashing phones at all, so I'd prefer to fix it without doing that! Does anybody know if it's possible? The phone is unlocked and is first bought from Telenor in Sweden (in case that makes any difference).
This happened for bad unlocking. The solution now is bring it to Samsung Service Center or Service Tecnic Assistant. Good luck :highfive:
Hello,
I recently bought a S5 in the netherlands (i live and use the phone in belgium). Started it up, everything works fine. I make one phonecall as required for the regionlock, works fine.
Then something strange happens, after the one phonecall required, i cant accept or make phonecalls anymore.
I get a message "your phone has been locked due to security reasons"
Now the weird thing is, if i use a simcard from another carrier, the phone just works fine, no locking whatsoever...
Called Samsung support, told the story, they tell me phone is region locked and i need to get a code, but the phone never asks me for a code nor can i put one in anywhere.
So i called my provider, they tell me the phone is blacklisted probably but they cant check that...
After some research i found out the phone is actualy from UK with an international firmware on it: G900FXXU1ANG2 (countrycode BTU)
Anyone have an idea how to get rid of this problem?
I dont want to root the phone just yet in case i have to exchange it for another one.
Would it help to get the countryspecific stock firmware installed for my country? (Belgium)
thanks a lot for the help
thale
You'd get better help if you gave us more details, notably verbatim error messages, rather than paraphrasing.
Your provider can certainly tell you if your phone is blacklisted since an IMEI blacklist is under their direct control. So ask them again to clarify that. Region locking is much more likely though. Samsung region locks phones to prevent grey market sales, which is exactly what you've tried to do. The region lock is released after you use the phone a short while with a provider in the original region, which sounds like the UK in your case. Region locking is also a type of blacklist, although that term is almost always used to refer to carrier IMEI blacklisting unless otherwise specified.
As you didn't make any preliminary calls in the UK, nor apparently did the previous owner (or vendor), the phone is now restricted. You could travel to the UK and use your phone there for a day to dissipate the region lock. Or a lot of people claim that a regular SIM unlock code, such as you can buy on Ebay or any number of other places will also remove the region lock (unconfirmed). Or you can root your phone and circumvent the region lock by editing the blocked regions in your customer.xml file.
There are lots of existing threads on this subject, as you would know if had you done a search. Refer to those for further elaboration or you can search my post history as I've posted in detail how to remove the region lock in previous posts.
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Thanks for the reply, this forum was my last resort since i didnt understand the problem.
I dont get any error messages at all.
provider A in S5 --> while calling i get the message phone blocked for security reason
provider A in S4 mini --> works perfectly
Provider B in S5 --> works perfectly
so i thought problems lies with faulty simcard, exchanged it but problem stays
when i call samsung they tell me its a provider problem
when i call my provider they say its a phone problem
in europe shouldnt matter realy where you buy your phone since there's free traffic of goods and services. I wonder if the webshop knows they are selling UK phones, ill talk to them about it tomorrow.
thanks again for the reply ill try to get the problem sorted, if that doesnt work at all, i guess ill just root it and fix the problem
kind regards,
thale
Humh, sounds weird.
Use the code *#7465625# (*#SIMLOCK#) to check for the lock status. On some devices this code needs root to launch.
thalekick said:
Thanks for the reply, this forum was my last resort since i didnt understand the problem.
I dont get any error messages at all.
provider A in S5 --> while calling i get the message phone blocked for security reason
provider A in S4 mini --> works perfectly
Provider B in S5 --> works perfectly
so i thought problems lies with faulty simcard, exchanged it but problem stays
when i call samsung they tell me its a provider problem
when i call my provider they say its a phone problem
in europe shouldnt matter realy where you buy your phone since there's free traffic of goods and services. I wonder if the webshop knows they are selling UK phones, ill talk to them about it tomorrow.
thanks again for the reply ill try to get the problem sorted, if that doesnt work at all, i guess ill just root it and fix the problem
kind regards,
thale
Click to expand...
Click to collapse
If I understood you correctly, your SIM card works properly in other phones. So your SIM card shouldn't be the issue. If your S5 is SIM unlocked (carrier unlocked), you could try someone else's SIM card in your S5 to rule out less common problems e.g. bent SIM socket.
And regardless, in your place, I'd open a support ticket with your provider. That should cover anything like a IMEI blacklist. All in all though it does sound like region locking. Which is Samsung blocking a phone from being used in a different region unless it has been first activated (i.e. used for a few calls) in the original region first. I wouldn't think that a region lock between two parts of Europe would be intentional, but it is still something to look into.
Without any explicit error messages, it is difficult to narrow down the cause. You might consider installing a logcat app to capture the system log which may have more information about the error.
Also try dialing *#06* and ensure that you have a valid IMEI (not all zeros)
And dial *#0011#. You should see a (IMEI) certificate "Pass"if at the end. If it says IMEI CERTI: FAIL or NA you may have a flash error or IMEI blacklist.
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Hello,
phone is an unlocked one, i used 2 different simcards from 2 different providers.
imei certificate passes so thats good!
im gonna make some phonecalls today and keep you all posted
kind regards
thale
Try to use Provider A with another sim card?
Sent from my SM-N9005 using Tapatalk
Had another talk with the helpdesk from the provider, they told me the phone is blacklisted but couldnt give me a reason why.
Im only blacklisted with provider A, if u use the phone with another simcard from another provider it works like a charm.
Ive had to send them my proof of purchase, and they will unblock the phone...
Havent had any feedback yet from the shop i bought it from, so maybe they can shine a new light on the whole deal!
Try
How about contacting the retailer? I think you'd better not root the phone or fix it by yourself.
Hello everybody
Recently received a Samsung Galaxy S5 originally from Verizon. The Phone works really well Outstanding performance ! but it has no service. Explanatio: I live in Cuba here the cellular operator is Cubacell operates on GSM. The phone finds the signal and notifies in "avaliable networks" tha Cubacel is Available... But fails registering on the network, and i don't know what to do... many technicians already "diagnose" the phone and most of them says is a problem qith QCN file, but what really worries me most is that Board IMEI is not the same the cell shows on *#06# .. so i found all these really tricky since i'm new in Android cause my previous phone was an HTC Windows Phone 8x that suddenly died and revived with no service either (a strange case for other post i hope) The S5 is SiM unlocked everybody says, besides every verizon phone is gsm unlocked by default don't they? The dark story of it is that the phone was previously unlocked for use in another company in the US and was working there perfectly. Right now the phone is running Lollipop, and no problems with WiFi restriction for Cuba so far... Registered on Samsung, on chat they send me to verizon saying phone is locked but i don't think thats the real problem...
So i'm wondering if anybody could help .... since in my country everything is so hard to get ja! and the acces to Octoplus Box or Z3X is expensive.. very...
Phone Details:
Model SM-G900V Android 5.0 Baseband G900VVRU2BOK3
Kernel 3.4.0 Build LRX21T.G900VVRU2BOK3 Hardware G900V.00
Security MDF v1.1 release 4 VPN v1.4 release 4.1
KNOX 2.3 Configuration J13.SAM.SMG900V.1
Thanks a million in advance and greetings from Cuba...
For the past five days my N910F has been unable to register on a network. This problem first arose while I was using the Kyubi Note 5 ported ROM. Initially I was able to manually enter the APN details and use mobile data without issue, but had to keep manually re-entering the APN info as the phone would "refresh SIM data" every ten minutes. I could search for network operators and could see every available network in my country except my own, I was advised to attempt to connect to them all by my carrier's support but all would show as registered for a split second before dropping straight away.
The following day I flashed stock Marshmallow that I downloaded from Sammobile N910FXXU1DPD3 through Odin which factory reset the device, I've since rooted and put TWRP on it. Now when I search for network operators I can see my network along with the rest of them, but same thing happens and it can't properly connect.
The SIM card works in an old Galaxy S 3 and I've had my carrier send me a new SIM which arrived yesterday and after activating it, is doing the same thing.
When I bought the phone, I bought it second hand and it was carrier locked and the carrier would not unlock it. As a workaround, I went to a dodgy GSM shop who did something which essentially changed the IMEI of the device so that it would work, so my phone's IMEI when I dial #*06# and the one under the battery/on the box do not match. I only add this because I've read online that it could be an IMEI issue? However, this different IMEI hasn't caused me any problems for the last year and a half of owning the phone (apart from the fingerprint scanner not working).
Does anyone have any suggestion for the next step? Is it worth sending to Samsung for a warranty repair? Should I try a different modem?
Basically you have knowlingy changed the IMEI to get around a carrier block, which is illegal. In doing so, and also by rooting the device you have voided any warranty left on the phone.
Congratulations, you now have one of the most expensive paperweights you will ever own.
Sent from my SM-N910F using XDA-Developers mobile app
Mod edit: Thread closed.
Changing the IMEI is illegal in most countries. Therefore the discussion thereof is prohibited on XDA.
I know the unlocked model of the s8 is supposed to be released at the end of may, but I bought an s8 off of swappa that was unlocked model number G950, and it seems to be unlocked and there are no carrier boot up logos or bloatware. My Sim card (At&t) is recognized and I am able to get LTE, But texting doesn't work, it just immediately says retry and calling just gives me an error saying Sim is not installed or something. Dunno if this means anything but while I was installing an OTA update for the phone the screen looked kinda different from any other phones I've used (trust me I've used a lot of phones...) and I was wondering if that meant anything. I've attached a photo so you all can see. Any insight or help on how to get my calls and texts working would be helpful. Also, I honestly don't know what phone I have. I did some research of some model numbers I found in the settings and there was only one search that led me to Samsung saying that it was a model for C-Spire but I've never heard of them.
That's the regular update screen. I did an update last night.
Sent from my SM-G955U using Tapatalk
If you look in the root/change carrier thread and do some reading. You can flash from C-spire to XAC. Which is unlocked Canadian version. It unlocks LTE bands and no carrier bloat. I had a US cellular version and did this. Now it works great
Sent from my SM-G950W using Tapatalk
The stock messaging app, "settings", then "more settings" , then "text messages" then "message center"" . Make sure you have this number there: +13603399740
That is what AT&T told me to go to when I couldn't get messages on my phone. Not 100% sure if the number is the same for everyone on AT&T or not.