Database Users

"Unknown SIM Error" on MDA Pro on T-Mobile

Hi,
I just bought an MDA Pro direct from T-Mobile's website and it was delivered today. Unfortunately, while the PDA side of things works perfectly, it won't connect to T-Mobile at all.
On the 'T-Mobile' start up screen it displays the text 'No GSM' above what I think must be version information.
It reports 'no service' in the phone status bubble, and SIM Manager says: "Only emergency service calls can be made without a PIN" When I enter the PIN I was given, nothing happens. I think it goes into 'change PIN mode' because then I can put two more 4-digit numbers in (it doesn't matter which!) and then it says "Unknown PIN Status. Unknown PIN Error"
Unfortunately it isn't just a SIM problem as the SIM works in my O2 P800.
I've spoken with T-Mobile and they want to swap the handset, which would be fine if they had any in stock! I'm wondering if anyone here had any advice on ways I could try fixing this short of waiting for them to get in touch and tell me they have another handset I can try.
Any suggestions would be much appreciated!

Hi,
what is your local provider ? Is it T-Mobile, Vodafone, E-plus or O2 ?
The mda pro only works with a t-mobile sim !
- Superbowl

Try to clean the sim before putting it back in the MDA Pro,
Generally works for me!

i had the same problem with my jasjar here is Australia......my sim works on any other pda and phones but not the jasjar.....apparently the sim that i have or some of the new sims have a little higher voltage than normal.......and the jasjar dont like it.....so what i did was replace the sim with another one and that worked......al they had to do was port my number to the new sim......but before it did that tried to put the sim in first and it started to look for a network so i knew this was gonna work......becoz before when i put my old sim in it just says invalid sim or no sim........so try replacing ur sim with another one......perhaps try and get an old sim maybe the sim has some in stock.....i bet ya that will wrok....good luck

Thanks guys ... I'm trying to find an older T-Mobile SIM to try. It's just frustrating! I've tried giving the SIM a wipe, to no avail. If it is that the SIM is slightly incompatible, T-Mobile sending out another unit won't really help, right?
How annoying!
If anyone else has any great ideas I'd love to hear them!

try using someone elses sim and put it in the device and give it a try to check if its definitely the unit and not the sim......when i rang the tech support for optus thats what i was advised.....and they were right....sim voltage was the problem......anyways try getting another sim.

Contact customer services.
The problem sounds like you SIM is too old.
They should ask for your SIM serial number, if its too old they'll offer to send you a new SIM or something else to make it work straight away??? :wink:

The MDA PRO as its a 3G type phone with WCDMA it needs a diffrent sim card that is usaly known as a 3V USIM.
Its the same on Three in the UK, the sims from their phones will only work in 3G phones not standard GSM ones and vica-versa.

Old SIMs (from about 5 years ago) are rated at 5 volts. Newer ones are 3 volts (not just for 3G). Trust me, I work for a certain mobile phone company who sponser West Brom. ;-)
The problem will be fixed in a future software upgrade. But for now you need a new SIM or your phone unlocked.

Trouble is, this *is* a new SIM... I'm moving back to the 'hardware fault' diagnosis I think.
I went to a friendly carphone warehouse shop in Oxford and tried a new (and definately working) T-Mobile PAYG SIM and that gave exactly the same error.
Maybe T-Mobile need to send me a 3G SIM. I guess I'm probably just going to have to wait until they can send me a new handset to see what happens.
Ho hum!

There's no such thing as a 3G SIM. The 3G gigery pokery happens on the phone. There is no need for a different SIM. The MDA Pro has a problem with SIMs with certain serial numbers (Don't know which coz I'm not at work). You need either a SIM that the phone likes or your phone unlocked. Call customer services if you still have your phone.

Had the same problem allready twice in 2 weeks.
One time a soft reset made the device working again - another time I had to take out the sim card and put it in again, then it worked. But all email accounts were gone and had to be installed again.
Chris

Slave1 said:
There's no such thing as a 3G SIM. The 3G gigery pokery happens on the phone. There is no need for a different SIM. The MDA Pro has a problem with SIMs with certain serial numbers (Don't know which coz I'm not at work). You need either a SIM that the phone likes or your phone unlocked. Call customer services if you still have your phone.
Click to expand...
Click to collapse
Hi, thanks for that reply... it seems very useful! If you could post/pm me the numbers of those SIMs that the MDA Pro is unlikely to like I'd really appreciate it... customer services aren't striking me as very helpful (and certainly not knowledgable) and I can tell that if I call them they're still going to say: Wait until we have another handset in stock and we'll see what happens then. Which doesn't help me much as who knows when that will be?
Thanks!

Any SIM serial not starting with 06 or 07 will be affected by the issue.
eg 90043575, the serial starts with 04.
This will be fixed with a software upgrade in the future, in the mean time you either need new SIM or you handset unlocked. For either call customer services.

I got my MDA Pro a few days ago also, had the same problem as you, basically the handset is network locked, not sure how they managed to lock all UK network, basically give Tmob a call and make sure your stay on the line until they provide with an unlock code, i got mine, now my old sim works and my handset is unlocked

I got my MDA Pro a few days ago also, had the same problem as you, basically the handset is network locked, not sure how they managed to lock all UK network, basically give Tmob a call and make sure your stay on the line until they provide with an unlock code, i got mine, now my old sim works and my handset is unlocked

i had the same problem with my ASUS P535 (here is France) with new SIM card.
seen from :http://vip.asus.com/forum/view.aspx?id=20070818011855796&board_id=6&model=P535&page=1&SLanguage=en-us
Thanks.

I had the same problem BUT-
I had the same problem but i had been using the sim card successfully with the exec for a year, after a hard reset it doesnt recognise the sim. will a ROM upgrade fix it or is it a hardware failiure?

My solution
lauriewsmith said:
I had the same problem but i had been using the sim card successfully with the exec for a year, after a hard reset it doesnt recognise the sim. will a ROM upgrade fix it or is it a hardware failiure?
Click to expand...
Click to collapse
I had this happening to me just last week with a card that works all the time. Then followed that I had no sound coming off speakers or bluetooth. In my case it was a third party software problem. Don't ask me which as I install and uninstall too many applications and my Uni gets in a tangle sometimes. A soft reset instantly (in terms!) restored phone activities and sound, so I recommend a reset if you haven't tried it already. Maybe you will need more than one.

[Network] loss of connection on Orange Network, need help

Hi there,
I am confronted with a big issue which affects my ability to place or even receive calls: I cannot connect my HTC HD on the Orange Network anymore.
Two weeks ago I was on the road using TomTom and suddenly Windows Mobile told me that the distant server was disconnected and that I was not connect to the network anymore. Each time I am trying to get a connection, I can see that the mobile detects a network, tries to register (I even can see the Edge icon and some network bars) but always fall back to the 'not connected' icon.
The weird thing is that the mobile detects all the networks it is intended to: Orange, Bouygues and SFR (the three main operators).
Since that day, I have tried everything to re connect the mobile on Orange network but nothing was successfull:
- many and many reboots of the mobile,
- I have suppressed the Orange network connection in the connection wizard and then re created it.
- I have switched the network connection to manual and tried to connect manually: as for auto mode, it displays the following message:
"cannot connect to the selected network. Choose another network or stop you data connection and try again"
- I have switched the band mode from auto to "GSM (900+1800)"
- I have done hard resets
- I have changed the ROM two times: the first one for an up to date Mia and the second time for a Rhodyum 1.1 (the one I am using now).
- I have called the hotline to check if the problem is coming from their devices ; apparently not the case
- I have put my SIM card on another mobile and its working. A different SIM on my HD is not working. I even have changed my SIM card !
I am really desperate now because I do not know where the problem could come from. Should I do something else ? How can I be sure that it comes from my mobile ?
Thank you for your help

Yesterday evening, I have tried to restore stock SPL1.14; It did not work either
Nobody can help me or just give me clues to solve the issue ?

What is your SN? Is a 84x? See here: http://forum.xda-developers.com/showthread.php?t=476139 could be an RMA candidate, read the thred

OK, here's the short answer:
your phone's a nicked device and it's on the IMEI blacklist.
the other possibility is that the contract didn't get paid off so the provider blocked it because of that.
I'm generally always right on this - go get a CheckMEND report from here: http://www.checkmend.com/uk/public/check_start
Your IMEI goes in the Identifier box.

I appear to be having the same problem, I checked via that site and it didnt flag anything up, it was all clean. The problem started yesterday afternoon.
I've tried an O2 sim card in there which works, and someones elses Orange sim card in there, which doesnt

Orange have confirmed the phone is blacklisted, even though the site said it wasn't.
Taking my frustrations out on the 'legitimate' Ebay seller as we speak and searching for a replacement.

the same story
Hi i got the same story but i was using the phone for 7 months and after one day no service... how is that possible? and how i can sort it out? i bought it on ebay its possible that as you sayed contract is not payed... but what i can do? if the imei its black listed if i change imei will unblock the phone? phone had simlock on orange now iam using o2 i think after or now when i upload new rom imei changed for extra 2 digitals 01... i tryed
WST v4.2.2 setup problem with comunication :/
HTC imei Update Wizard the same problem cominication... any advice? servis will help?
i upload rom oficial one mayby i will nee to upload diferent one?

JM7 said:
Orange have confirmed the phone is blacklisted, even though the site said it wasn't.
Taking my frustrations out on the 'legitimate' Ebay seller as we speak and searching for a replacement.
Click to expand...
Click to collapse
the problem is if this "legitimate" ebay seller, sold it to you before the contract was paid to orange, legally the phone belongs to orange, therefore you've bought stolen goods. Hope you used Paypal, they might offer some protection.

alexpetrucci said:
the problem is if this "legitimate" ebay seller, sold it to you before the contract was paid to orange, legally the phone belongs to orange, therefore you've bought stolen goods. Hope you used Paypal, they might offer some protection.
Click to expand...
Click to collapse
what about if i was using phone for half year and everything was ok and not its happen?

T-mobile HD2, unlocked and won't connect to O2

I purchased an HD2 from eBay, it was locked to T-mobile. I immediately purchased an unlock code, installing my old iPhone sim (making O2 aware of what I was doing) and punching in the unlock code. All appeared well, however it won't connect to the telephone network. I'm getting the GSM icon and I can strangley check emails when out and about sometimes. But I can't make nor receive calls.
I've taken the T-mobile ROM off and replaced it via HSPL with ...
RUU_Le2_UK_1.43.206.4_Radio_Signed_15.26.50.07U_2.04.50.22_2_Ship
Which is the standard O2 ROM. It throws up the following error when searching for networks and trying to connect to O2.
"cannot register on selected network, choose another network".
I've tried everything and I'm just about losing it, smashing the phone passed my mind at one point.
I've tried my sim in another O2 HD2 and it worked fine, on all account. His O2 sim didn't work in my phone, which is annoying. So the issue is with the handset.
Before I go insane, I don't suppose someone knows a very easy solution to this issue?
Regards,
Sii
Info....
OS Version - 5.2.21864 (21864.5.0.81)
Manilla Version - 2.5.192.02525.0
ROM Version - 1.43.206.4 (70315) WWE
Radio Version - 2.04.50.22_2
Protocol 15.26.50.07U

It's sat next to me on the desk with an exclamation mark on the network icon but the mobile web icon is connected.
Very srtange.

automatic network selection brings back a failure to connect, however manual selection brings back all UK providers, selecting O2. I get "cannot register".
I wonder if it's something to do with O2 barring the handset? Brand new before I opened it. Also it was locked to T-mobile.
There must be a very simple explanation for this I hope.

Sounds like you may have to contact T-mobile for an unlock code.

TomH01 said:
Sounds like you may have to contact T-mobile for an unlock code.
Click to expand...
Click to collapse
I've paid this company ....
[unlockdata dot co dot uk for a code and have used it, however that does appear to be the issue from what I can see.
They sent me a code, when placing my O2 sim in the phone asked for it, I entered it and all appeared well. However it must not be the case deep down in the phone somewhere.....

are you sure it hasnt been blocked by t-mobile? Could well be an insurance scam: data usually works on blocked phones whereas GSM doesn't.

Well I've took my O2 sim card out and stuck my T-mobile one back in and the T-mobile one works and the O2 one doesn't, but I can't make calls.
Did some diggging that this ....
I've not been able to use the phone due to it actually being barred from service. Please use the below link ..
www . checkmend . com / uk / verify
With the certificate ID of - CM4510856-D4848
Looks like it's not stolen or lost, but just barred. I wonder why.
Is there any way I can get this removed?

Its blocked then: blocked and barred are the same thing. More than likely the seller has sold the device then immediately reported it lost/stolen to claim a new one and thus not only have a new phone buy also a nice slice of cash in their back pocket.
There is no way that the phone will be barred without having been reported as either lost or stolen and there is also no way of having it unblocked unless you are the original owner, haven't made an insurance claim, and ring T-mobile with the blocking password provided when the loss was first reported to the police.
Personally I recommend you lodge a claim with PayPal immediately as any other line of enquiry will only serve to delay the inevitable: you will not get the phone unblocked.
Best of luck sorting it out.

Complaint logged with Paypal, just have to wait and see what comes of it. Included the link to the file saying it's barred, let's see what the seller has to say about that.
c*ck omlette that he is
Thanks so much for the info and shoulder to cry on, heh heh.
All the best, Sii

Good luck with it mate, hope you get it sorted quickly.

Well I spoke to T-mobile and they said "no idea why we blocked it, it's not listed as stolen or anything, there you go, unbarred".
I can make calls on my T-mobile sim, however it still REFUSES! to connect to O2, even though I've put in the unlock code supplied by the company listed above.
Spoke to O2 customer support and T-mobile, no bars on the phone, no issues are barring by either provider. Just refuses to connect to O2.
Any ideas?
If not, anyone want to buy a £360 2 day old HD2?

siilomax said:
Well I spoke to T-mobile and they said "no idea why we blocked it, it's not listed as stolen or anything, there you go, unbarred".
I can make calls on my T-mobile sim, however it still REFUSES! to connect to O2, even though I've put in the unlock code supplied by the company listed above.
Spoke to O2 customer support and T-mobile, no bars on the phone, no issues are barring by either provider. Just refuses to connect to O2.
Any ideas?
If not, anyone want to buy a £360 2 day old HD2?
Click to expand...
Click to collapse
i would try and get a different SIm from o2 maybe?
or even try flashing a different radio.

Audio Oblivion said:
i would try and get a different SIm from o2 maybe?
or even try flashing a different radio.
Click to expand...
Click to collapse
I've had 3 sims from O2 already this week, they've been really cool about it.
I've also had to ROMS on, the original t-mobile one, and the latest HTC ROM too.
I can't for the life of me figure out what the problem is, it's very annoying.
I may just put it up for sale on the bay of E, it works perfectly on T-mobile.
I'll try some other flashes this evening and see if that fixes it, however I don't think it will. FUnny thing is that it won't connect to the network but the large [G] connects, which does make me believe it's something radio based.

Been told to check the following ....
Yes in the sim card options type mepd
Network active - locked
Network disabled / inactive - unlocked
ANy ideas how?

Bit of an obivous thing really, but did you have to go through connection setup when you put the O2 SIM in?

johncmolyneux said:
Bit of an obivous thing really, but did you have to go through connection setup when you put the O2 SIM in?
Click to expand...
Click to collapse
Yes, and it won't connect/register/logon/access the O2 network.
This is the confusing thing, it can see the network but won't register with it

im not sure exactly which ROMS you have tried so i dont know whether they would have included a radio update... to be sure flash the radio ONLY!

Audio Oblivion said:
im not sure exactly which ROMS you have tried so i dont know whether they would have included a radio update... to be sure flash the radio ONLY!
Click to expand...
Click to collapse
Can anyone on O2 UK please list the Radio flash they're using and working with?
I did list the ROM I'm currently using in my first post.
I tried this with the originally installed T-mobile ROM (unknown details, apologies) the latest HTC ROMs (United Kingdom 1.48.405.2 and WWE:1.66.405.2) direct from their UK site and then the O2 listed in my first post.
I'll give everything another go tonight, seriously running out of steam on this topic though

siilomax said:
Can anyone on O2 UK please list the Radio flash they're using and working with?
I did list the ROM I'm currently using in my first post.
I tried this with the originally installed T-mobile ROM (unknown details, apologies) the latest HTC ROMs (United Kingdom 1.48.405.2 and WWE:1.66.405.2) direct from their UK site and then the O2 listed in my first post.
I'll give everything another go tonight, seriously running out of steam on this topic though
Click to expand...
Click to collapse
Im on 02 using radio 2.06.50.04 on mr.vandalay's Leo Lite V2.1 WWE Rom (highly recommended) With HSPL and works like a charm only mod ive need to do is the reg tweek to get mms full size.
Hope this helps mate good luck

mynamesteve said:
Im on 02 using radio 2.06.50.04 on mr.vandalay's Leo Lite V2.1 WWE Rom (highly recommended) With HSPL and works like a charm only mod ive need to do is the reg tweek to get mms full size.
Hope this helps mate good luck
Click to expand...
Click to collapse
Excellent, thanks so much for the information, I'll give that a stab when I get in after work. To save me hunting around, I don't suppose you'd be so awesome as to link to the ROM
Thank for everything guys, I just hope this ROM update fixes something ....

NOOB - T-Mobile UK HD2 unlocked - no O2 connection..

Hi guys.
Really sorry about this but I am at the end of my tether with this!
I run my own IT support company and one of the things I do most is Blackberry and iPhone Exchange email syncing. While both of those work brilliantly, I have had users having loads of issues getting their Windows Mobile devices working easily. Luckliy only one or 2 have these devices but more are asking....
I resorted to retiring my Bold 9000 and got a brand new sealed HD2 on the UK T-Mobile network today. First thing I did was get a sim unlock code and that went through first time (using my working o2 SIM from my BB). However, I couldn't make calls so after I spoke to o2 I got in to the Phone, Network settings and with the Network selection on auto, the preferred networks list was blank. Clicking the preferred networks button brings up the list of preferred networks, ticked o2 - UK and ok'd it. Goes back to main network screen and still blank. Clicking Find Network then brings up cannot register on selected network.
Changing automatic network selection to manual, selecting )2 - UK and ok'ing that brings up the same 'cannot register on selected network error. So, after coming here, I stuck on the HSPL 1.42, then upgraded to RUU_Leo_HTC_WWE_1.48.405.2_Radio_Signed_15.28.50.07U_2.05.51.05_2_Ship
That went on fine and after wiping to factory to make sure I sent through the set up. Same errors and still can't make receive calls.
Stuck on the 2.08 hspl for the hell of it then upgraded to RUU_Leo_HTC_WWE_1.66.405.2_Radio_Signed_15.30.50.07U_2.06.51.07_Ship
Guess what? Exact same problems! I spoke to o2 support and they were pretty useless. Explained that it was sim unlocked and on a generic firmware. They said that T-Mobile do something weird with the HTC and I should try calling HTC tech support, who are now closed...... I am not sure HTC will be of any help anyway as I can't exactly go telling them I have stuck on the HSPL and a non-approved firmware for what was the originall carrier!
Help please anybody?? I have googled and googled but haven't found anyone with the same problem, I might be being blind. BTW, what I guess is the antenna icon has an exclamation next to it
Thanks,
Nick

Quick update. Housemate got back so I nicked the Vodafone UK sim from his iPhone and stuck that in the HD2. Same problem, won't register on Vodafone either. Anyone?

Got annoyed. changed the SPL back to the standard 1.42. Installed the latest T-Mobile official firmware. Same problems. Do I have the only HD2 ever to be doing this? . I don't have a T-Mobile sim to hand and the nearest store is miles away sadly.

Does your phone app not work at all ?
How do you know unlock code worked ? so far every sim you tried has failed.
Where did you get the unlocking code from ?
How did you use it ? meaning how did you input it ?
Verdict so far, if a t-mobile sim card works then unlock was a fail !

Ok referring to your network selection, for the UK, you should have it set to Automatic, it will then use the network associated with your sim.
referring to your call problem, does the phone still work with the original t-mobile sim?
if so it sounds like your unlock code didnt work.
if your phone no longer works with the original t-mobile, I should think something has gone wrong with the radio software you have installed on the phone. Try going back to the stock htc/radio rom. If that doesnt work then the phone probably needs to go back to t-mobile for repair, at this point you tell them "it just stopped working"

have you tried to run the connection setup wizard?
settings - menu - all settings - connections - connection setup
if there isn't one, connectionsetup is available as a cab.

Hi guys. It was a brand neww, sealed box HD2, but from T-Mobile. No SIM with it at all or I would have been trying that too of course .
Regarding how I unlocked it. I paid an ebay seller to give me an unlock code. When I fist put on 02 SIM in the phone it wafffled on about being network locked basically and had a field to enter the unlock code. Entered the code given to me via the Ebay unlocker and never got that message again on the screen. Is that wrong somehow?
Manual network, auto network, selecting carrier etc all of them make no difference. I am off out now but have found a local store with PAYG T-Mobile sims in stock so will grab 1 later today and see what happens then.
Will update/bore you all later!
Cheers,
Nick

Right, case closed. I got the T-Mobile sim and stuck it in. Showed up with T-Mobile on the scren and a good strength signal. Tried to make a call, dropped back to the home screen almost straight away. I had full data access though. Spoke to T-Mobile who informed me that my brand new, sealed box HD2 was blacklisted and I could do nothing with it!
Vodafone and O2 just flat out don't let you register the handset on their network if is it blacklisted it would seem.
Contacted the seller and he has arranged a refund, but the refund is showing as 'pending' so I am not going to return the phone until I see it physically in my account.
I have to be honest and say that this is actually a good thing as despite HTC doing all they can to make the Win 6.5 on there look less dog-like, the overall UI is still pretty awful. Now,this phone with Android 2.1 on it might be a dfferent matter! Back on my Bold 9000 for now......
Cheers,
Nick.

I am sorry to hear about that, looks like to you got hit by some sort of scam, probably resealed a second hand or refurbished unit into an original box and sold it as new.
regarding the UI of the htc devices, I am not really sure why you think this, htc hd2 uses htc sense which is the same ui as on the android htc phones. The only windows mobile thing you should really see is the start menu which has been praised as being a very good replacement for the old start menu. even all the settings windows are run through the htc sense ui so i am really not sure what you are complaining about :S
If you dislike the top bar/bottom soft buttons, there have been a lot of modifications to these in more recent hd2 roms, maybe you should to take a look at the roms section to see some pics.

Phone Not Allowed - UK SM-G950F

Hi All
I'm at my wits end with this Samsung S8 phone, Bought a 2nd hand S8, was working fine, but I noticed the internal storage was only showing 9.63GB
Had a look on here and the solution was to stock flash the phone. I did that, all fine, storage was back to normal....BUT since then I can't make or receive any calls.
I get the error "phone not allowed" and it won't connect to ANY mobile network.
I've tried loads of different suggestions
Sim is OK in another phone
Re Flashed (numerous times)
Andriod 7 and 8
Sim and Phone OK with three network
But still have the issue....
Can anyone help me? or push me in the right direction?
Cheers
Tommy

You probably tried this, but try booting into safe mode. If it works then there is a software problem. If the problems persist in safe mode you probably gotta contact Samsung.

Are you sure the phone is unlocked?
Sent from my SM-G950F using Tapatalk

Is the phone blacklisted? if it is blacklisted then it will not connect to service. Your SIM wil work perfect in any other phone.

Hate to say this but it does sound like your phone has been blacklisted.
You can check with one of the online IMEI blacklists.

If your phone shows Phone not allowed and a code like MM#6, it usually is an indication that it was blacklisted.
Check your phone's IMEI on a blacklist checker like http://imeipro.info/

The previous user most likely had the firmware and baseband messed around with and once you flashed stock it reverted to true state, it's highly advised to get back in contact with the person, where was the phone bought? A shop? Online?

Dreadsta5889 said:
You probably tried this, but try booting into safe mode. If it works then there is a software problem. If the problems persist in safe mode you probably gotta contact Samsung.
Click to expand...
Click to collapse
Yeah tried that , still the same

If one is in possesion of a S8 that says "Phone not allowed", and the phone is blacklisted, is there any way of fixing that?
I have the same issue here..
I bought an S8 from Manchester last summer, and I started using it last week, (because my other phone worked longer than expected) and after I gave the phone the Network key that the previous user wrote down for me, then that message appeared.
So im stuck with this almost completely new brick aswell...
Any options at all?

YallahHabibi said:
If one is in possesion of a S8 that says "Phone not allowed", and the phone is blacklisted, is there any way of fixing that?
I have the same issue here..
I bought an S8 from Manchester last summer, and I started using it last week, (because my other phone worked longer than expected) and after I gave the phone the Network key that the previous user wrote down for me, then that message appeared.
So im stuck with this almost completely new brick aswell...
Any options at all?
Click to expand...
Click to collapse
The only real solution here is to either go abroad and sell the phone, or sell it to someone who is going abroad. The phone will work outside of the UK.

It does sound as your phones imei Nr is blocked in UK.. Probably the person who sold you the phone, stole it somewhere.

I have the same problem on my Samsung S7 now in Brazil.
In Canada, on Canadian carriers, everything is fine, and if I put the Canadian SIM in there everything is fine. But the minute I plug in Brazilian SIM card, boom, Phone Not Allowed message comes up and it won't connect to any of the Brazilian networks. Brand new SIM, works just fine on another LG phone (and any other phone I tried).
The phone is unlocked, I even checked with a few pieces of software and there is no network lock on it either.
I've got the master & network unlock codes from Samsung, but have no way of inputting them as no prompts for those come up when I insert the Brazilian SIM.
I checked the IMEI, it is definitely clean and not blacklisted.
Heck, I even rooted the phone to see if that would help, and still nothing.
Any idea what else to try or what else might be causing this goddamn message to pop up?!

I solved my S8.
Blacklisted on all uk networks except Three network.
Works perfect.