Connection error or invalid mmi code - Nokia 6 Questions & Answers

I have a Nokia 6 on the T-Mobile network, I am only using one SIM on this device. Recently whenever I use a short code to check my balance, data usage, etc. I get a "connection error or invalid MMI code" error. When I first got the Nokia 6 it worked fine then it starting giving this error.
I called TMo but they can't figure it out, I rebooted, manually and automatically re-selected the service provider, booted in safe mode. T-Mobile reconnected my device to the network themselves multiple times too, same error.
Yesterday, I found an old Alcatel Android phone which is a single SIM phone, I put my SIM in there and the short codes worked fine. I put the SIM back into the Nokia 6, I got the error all over again.
Does anyone know a fix for this, I am only using only SIM card so the articles and YouTube videos I found were not working as they concerned a phone with 2 SIMs.
Thanks all.

Fixed---sort of
andrm said:
I have a Nokia 6 on the T-Mobile network, I am only using one SIM on this device. Recently whenever I use a short code to check my balance, data usage, etc. I get a "connection error or invalid MMI code" error. When I first got the Nokia 6 it worked fine then it starting giving this error.
I called TMo but they can't figure it out, I rebooted, manually and automatically re-selected the service provider, booted in safe mode. T-Mobile reconnected my device to the network themselves multiple times too, same error.
Yesterday, I found an old Alcatel Android phone which is a single SIM phone, I put my SIM in there and the short codes worked fine. I put the SIM back into the Nokia 6, I got the error all over again.
Does anyone know a fix for this, I am only using only SIM card so the articles and YouTube videos I found were not working as they concerned a phone with 2 SIMs.
Thanks all.
Click to expand...
Click to collapse
Well, someone helped me resolve this (no not Tmo, but it wasn't a Tmo issue). Seems the Nokia 6 no longer switches to HSPA+ mode in order to process the short code (USSD), the workaround is to temporarily toggle the Nokia 6 to 3G, once this is done, the short codes work. I can then place it back onto 4G (LTE).
It used to work, so I am wondering if a recent Nokia update changed this. Not a big deal, I just have to toggle to 3G use the short code, then go back to 4G, a few seconds.
This person stated he had an issue with his LG, and found a setting to allow USSD over IMS in the hidden menu to resolve this so he doesn't have to toggle back and forth. I did not see this option in the hidden menu, so the 6 may not support it.

Related

HTC Hero + 3 Sim = No connection

New Hero. Originally sold by Orange UK. Unlocked and imported to Ireland.
New sim from 3 Ireland.
Sim goes into Hero, but Hero does not connect to network. Occassionally phone makes brief connection to 2G roaming partner (Vodafone), but never 3G connection to 3 network.
Manually search for networks and select 3 (or any network for that matter) and phone says "Your SIM card does not allow a connection to this network".
"Mobile Network - Connect to internet" option in settings seems disabled (greyed out, can't be changed).
Have tried HTC, Orange, T-Mobile and MoDaCo ROMs.
Can anyone please suggest a fix. This is surely a phone setting thing? It can't be that 3 USIMs just don't work in the phone can it? I mean I haven't got the APN configured properly, but I should still be getting basic phone services no?
Did you get this fixed? I am having the same problem trying to use Three sim in England on a Orange Hero. It accepts the network unlock code but then stays on the 'unlocking sim' screen and I left it for ages.
No. Gave up and am staying with my old provider (3 didn't seem too interested in holding onto me as a new customer).
I've been posting this query in a few places. In one thread a guy from England said his 3 Sim used to work but then suddenly began exhibiting the behaviour I have described. I think he said a factory reset fixed it. Anyway, some have supposed that this could be a bug in Android/Hero that makes it incompatible with 3. I personally suspect its more about 3.
Thanks anyway. There must be a way round it, I'll find it.
Be sure to post if you do.
http://androidforums.com/htc-hero/8421-3-sim-htc-hero-sim-no-service.html#post48026
http://www.boards.ie/vbulletin/showthread.php?t=2055666141
RetroFlux said:
Did you get this fixed? I am having the same problem trying to use Three sim in England on a Orange Hero. It accepts the network unlock code but then stays on the 'unlocking sim' screen and I left it for ages.
Click to expand...
Click to collapse
I've faced with absolutely the same problem, with my new HTC Hero. I bought it 4 days ago on eBay in UK. It also locked to orange. Please contact me if you'll find out something! I like this handset very much. It would be great if I can also make calls with it
RetroFlux said:
Thanks anyway. There must be a way round it, I'll find it.
Click to expand...
Click to collapse
Btw, if I can help you somehow - email me "prokher at gmail.com"
prokher said:
I've faced with absolutely the same problem, with my new HTC Hero. I bought it 4 days ago on eBay in UK. It also locked to orange. Please contact me if you'll find out something! I like this handset very much. It would be great if I can also make calls with it
Click to expand...
Click to collapse
Its locked to orange and you want it to work on 3? ...
a_l_a_n said:
New Hero. Originally sold by Orange UK. Unlocked and imported to Ireland.
New sim from 3 Ireland.
Sim goes into Hero, but Hero does not connect to network. Occassionally phone makes brief connection to 2G roaming partner (Vodafone), but never 3G connection to 3 network.
Manually search for networks and select 3 (or any network for that matter) and phone says "Your SIM card does not allow a connection to this network".
"Mobile Network - Connect to internet" option in settings seems disabled (greyed out, can't be changed).
Have tried HTC, Orange, T-Mobile and MoDaCo ROMs.
Can anyone please suggest a fix. This is surely a phone setting thing? It can't be that 3 USIMs just don't work in the phone can it? I mean I haven't got the APN configured properly, but I should still be getting basic phone services no?
Click to expand...
Click to collapse
This is MAJOR weird. Chances are, the new USIM is not compatible. I've got mine for about 2 years, first in a W910i, now in Hero (sim-free, UK). Everything worked first time in the Hero, just needed APN settings for MMS and data. Surprisingly, MMS won't send or download while on WiFi. Mine's currently running on the leaked 2.73.405.5 ROM (not MoDaCo).
Maybe try someone else' sim, from 3 or other network and see if that works.
ptashek said:
This is MAJOR weird. Chances are, the new USIM is not compatible. I've got mine for about 2 years, first in a W910i, now in Hero (sim-free, UK). Everything worked first time in the Hero, just needed APN settings for MMS and data. Surprisingly, MMS won't send or download while on WiFi. Mine's currently running on the leaked 2.73.405.5 ROM (not MoDaCo).
Maybe try someone else' sim, from 3 or other network and see if that works.
Click to expand...
Click to collapse
Lolz ... I am viewing this reply on my phone and couldn't understand why, when I tried to view the images, my phone would go to the settings screen and hang. Took a few views to figure it out
a_l_a_n said:
Its locked to orange and you want it to work on 3? ...
Click to expand...
Click to collapse
Almost, it's locked to Orange and I want to connect to any of Russian provider. When I entered unlock code it is hanged with "Unlocking SIM card..." message. I can give more detailed description if necessary.
I
prokher said:
Almost, it's locked to Orange and I want to connect to any of Russian provider. When I entered unlock code it is hanged with "Unlocking SIM card..." message. I can give more detailed description if necessary.
Click to expand...
Click to collapse
Well I've never actually unlocked a phone myself so I don't know, but of its hanging then I would guess its not unlocking properly so its not going to work.
Maybe contact the person you bought the code from and ask for help or another code. Otherwise I wonder if reflashing the ROM would help?
Hero on 3 Ireland
I am using a 3 Ireland "3pay" prepaid SIM with my white Hero (completely unlocked, imported from UK). Works fine! I got the "mobile broadband" prepaid package about a year ago and had to buy a usb modem (sitting on my desk ever since) with the sim card.
You need to enter the 3ireland.ie APN, but no other magic incantations
Occasionally, I get the "Roaming" indicator in the notification bar on the Hero (weak signal might cause this). Then, clearly, no internet. Its not roaming with another provider either. I strongly suspect that this is a 3 bug. Reconnecting to the 3 network fixes it.
PS: I'm in Dublin and usually get a HSPA connection ("H" icon)
PPS: You do not need to top up your 3 sim in order to connect to http://my3.three.ie (indeed, on that web page you can enter your prepaid voucher #).
Volker1 said:
I am using a 3 Ireland "3pay" prepaid SIM with my white Hero (completely unlocked, imported from UK). Works fine! I got the "mobile broadband" prepaid package about a year ago and had to buy a usb modem (sitting on my desk ever since) with the sim card.
You need to enter the 3ireland.ie APN, but no other magic incantations
Occasionally, I get the "Roaming" indicator in the notification bar on the Hero (weak signal might cause this). Then, clearly, no internet. Its not roaming with another provider either. I strongly suspect that this is a 3 bug. Reconnecting to the 3 network fixes it.
Click to expand...
Click to collapse
Hmm, you guys seem to have some strange issues with those 3 USIMs. Maybe checking serial numbers or chip revision would shed some light into this. My USIM is not only working fine, but also happily roaming (GSM + data!) when I tell it to do so. Heck, I've spent two weeks in Italy on "3 Italy" with this USIM and it worked fine.
Ok since posting on here yesterday I have rooted my phone and put on modacos latest rom and its still not working, I have tried two seperate three sims and a vodafone sim. Given that the vodafone sim is also not working Im thinking it's a problem with the unlock code.
I'll contact them and see what they say.
ptashek said:
do so. Heck, I've spent two weeks in Italy on "3 Italy" with this USIM and it worked fine.
Click to expand...
Click to collapse
Maybe I was not clear enough: Every couple of days, I get the roaming indicator while being in Ireland. Clearly, you can't roam to another Irish network. While I haven't tried it yet, I'm pretty sure that roaming outside of Ireland will work (worked before I got the Hero).
RetroFlux said:
Ok since posting on here yesterday I have rooted my phone and put on modacos latest rom and its still not working, I have tried two seperate three sims and a vodafone sim. Given that the vodafone sim is also not working Im thinking it's a problem with the unlock code.
I'll contact them and see what they say.
Click to expand...
Click to collapse
It looks like we have the same problem.
As I promised above, it is the detailed description.
First case:
Turn on the phone with orange SIM card - everything works fine.
Turn on the phone with any other SIM card (I actually tried 3 other SIM card from 3 different providers). It asks unlock code. Enter unlock code I bought (actually any code containing 8 digits) it says "Network unlock successful." But after that it allow only emergency calls and if I try to make a call I see "Not registered in network" message. After reboot it asks unlock code again.
Second case:
If I do "restore to factory defaults" and turn it on the first time with my (no orange) SIM card, it asks unlock code I enter correct unlock code (salesman gave me one, and after that I also bought the same code in the Internet )
it hangs with phrase "Unlocking SIM card...". (Actually "turn off menu" works, I even can make an emergency call, but that is all I can get from it)
Also I noticed that in the first case there is strange line on the bottom of the screen (of the size of the notification bar).
I have tried different ROMS (original, rooted, latest, modacos) all the same. I only didn't try to downgrade radio firmware. I don't know if it can help. I upgraded to latest one even before I get the unlock code. As I already mentioned I also tried all SIM card I can obtain, the problem is obviously doesn't caused by SIM/Network incompatibility. Btw, my SIM card works OK in another HTC Hero (which was bought with my one).
I think it is problem with unlock procedure itself, not with code correctness. If wrong code entered it must say something like "wrong code", but for any 8 digit code it says "Network unlock successful". Is is the symptom! )
I do not know what to do further
Ok, I have now had a reply from Unlock Now, they said it must be an issue my phone (although we have now established it's an issue with orange phones) but they did refund my payment.
I'll keep looking into this and post back if I find anything out.
RetroFlux said:
Ok, I have now had a reply from Unlock Now, they said it must be an issue my phone (although we have now established it's an issue with orange phones) but they did refund my payment.
I'll keep looking into this and post back if I find anything out.
Click to expand...
Click to collapse
I bought the same unlock code on two different sites, finally both did refund It is OK, but what will we do further?
I've decided started a new thread (http://forum.xda-developers.com/showthread.php?t=560105) as I don't think it is just a problem with Three sims as the Vodafone one I tried didn't work.
I'll still post back here if we get any useful info.

No mobile data SIM card issue

I have seen this issue with other users, I have contacted Sprint support the only suggestion they have given me is to replace the phone. I was hoping someone has a better solution. When I start my phone I get LTE after a couple moments it goes through Sprint Self Service ( Like I was activating the phone ) after that I get an error along the lines of " The network took too long to respond we are locking the sim card" after which i still have mobile data. Then a little while after a couple moments I get another pop up error that says " No SIM card detected restart phone " Then i get no data at all and it shows up as SIM card unknown. (because they locked it)
I was curious if anyone knows of a service I can uninstall or freeze with titanium backup that will stop this from happening?
Anyone have any ideas?

Galaxy Note 4 (SM-N910F) on 6.0.1 - "Not Registerd on Network"

Hey guys, I'm having an issue that I can't seem to resolve on my own. I recently broke the screen on my Note 5 so I decided to use my old Note 4 until the Note 8 comes out. Today I took out the phone, placed my simcard into it and started it up. I thought everything was fine until I tried making a call where it just gives me a pop up notification that I'm not registered on the network.
The phone isn't locked, bought it new unlocked. No custom roms (ever), IMEI is correct (naturally). So far I've reset the phone to factory settings to see if that would help to no avail.
If manually choose a carrier manually (both searching and choosing one takes longer than usual) I get a new message "No Service Selected Network (Telia N) not available".
The phone worked prior to me putting it away, my sim card works in other phones. Any suggestions or am I up sh**s creek without a paddle?
take out the simcard and try an emergency call (in my country it's a crime to playing with it. But without the card nobody can catch you.)
if the message appears again = it seems HW related problem
if the emergency call is working = it seems your phone restricted by the carrier and you need to ask the customer service why. Maybe a mistake
Thanks, it appears to work without sim card dialling 112. I'll email and call my service provider tomorrow.

SM-G950U AT&Tnetwork problem

I bought this phone for my wife 2 mounths ago, phone was locked.
I tried to unlock with GCPro but no luck. Then I used this service "INSTANT REMOTE UNLOCK CODE AT&T" on Ebay, It worked, but after a couple of days I noticed a problem. I was not given an unlock code, so most likely he erased and write cert in my phone. I just saw the phone reboot 3 times and then a message appeared on the screen "Network Unlock Successful". All took about 10 minutes.
Now when the phone is in one place - the connection to the network is stable, but if you go to another place (as I understand it when one cell tower is switched to another) - the network antenna disappears, the signal level is -101db, outgoing\incoming calls are not possible, no data. Helps only airplane mod on\off or reboot. I tried different firmware, set different network modes, etc - nothing helps.
So now I need backup a QCN from working phone ( preferably from unlocked AT&T G950U ). For now this is the only temporary way to get phone back to normal state.
So, I need help with a QCN ....

Galaxy S8 - Reactivated on Boost - Invalid SIM & OMADM Error

So it's been a year, or 2 I can't remember since I last used this phone. But I bought this phone through Boost, used it on Boost without issues and then switched to another carrier with a new phone and number. Well 2 days ago I reactivated the S8 back on Boost. I received my SIM card booted up the phone and have 2 notifications. "Invalid SIM" and "Please contact Sprint to unlock device." I've spent a total of 2 hours on chat with Boost between 2 days troubleshooting and trying to figure it out.
Other thing I noticed, I do NOT have Mobile Network Settings in my phone. I even tried to search for it with no luck, I was going to check the APN but that also is no where to be found.
So I hopped onto a Samsung discord where someone advised that I re-flash the stock, which led me to this site to download Odin and Frija. Which I did, and after countless hours of trying to figure out why I kept getting a fail, I switched computers and successfully completed the flash. Cool. Phone boots up, but now it's stuck at 32% update. Get out of that, wipe the cache, reset the phone, it loads up.. Yay, NOT. Still no Mobile Network Settings, but I can search the APN, there is no APN and the "ADD" is grayed out. I'm still getting the same notifications "Invalid SIM" and "Please Contact Sprint to unlock device."
I'm not sure what else I can do, or if there's anything else I can do? I don't understand why it's telling me to contact Sprint to unlock, when It's a Boost Mobile Phone, with Boost apps, and Boost load up screen, purchased from Boost.
So it seems this may not be a phone problem, but a Boost Mobile problem. I just talked to a 5th person on chat and they told me that my phone is too old to work on their new network. They refuse to unlock my device, even though during my search for a fix I came across multiple people with my problem who either easily got their phone unlocked, or filed a complaint with the FCC to get their phone unlocked, and their phone worked.
Also, putting my IMEI in on T-Mobile, Cricket Wireless, and Metro all say my phone will work.. but Boost also said my phone would work.. again as it should it's a Boost phone.

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