Hi, I recently pruchased a Samsung Galasxy S6 Edge and bought a unlock code from eBay. When trying to enter USSD codes I get the same error everytime 'Connection Problem or Invalid MMI Code'.
I have looked online and tried the common fixes but no joy. Even trying to run a basic *#06# gives the same error. I have tried using a combination of + and , etc before the first digit and after the whole string but still get the same error.
Any ideas? It's driving me mad.
Cheers
djayyy said:
Hi, I recently pruchased a Samsung Galasxy S6 Edge and bought a unlock code from eBay. When trying to enter USSD codes I get the same error everytime 'Connection Problem or Invalid MMI Code'.
I have looked online and tried the common fixes but no joy. Even trying to run a basic *#06# gives the same error. I have tried using a combination of + and , etc before the first digit and after the whole string but still get the same error.
Any ideas? It's driving me mad.
Cheers
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Click to collapse
With some carriers external codes wont work, so which network is the phone locked to? Contact whoever it is and get it unlocked that way.
Good luck
Hi Duncan, many thanks for your reply. I didn't realise that, I will contact Vodafone in that case. Many thanks.
djayyy said:
Hi Duncan, many thanks for your reply. I didn't realise that, I will contact Vodafone in that case. Many thanks.
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No worries dude and dont feel you got ripped off, its just some external codes dont work.
Im 99% sure when you buy from the network its locked to (in your case Vodafone) you'll be unlocked and happy days
Connection Problem OR Invalid MMI Code in New Update 6.0.1 Marshmellow
Hello There,
I am Using Samsung Galaxy S6 Edge ,
I Got an Update 6.0.1 Marshmellow , But After it i am Facing ' Connection Problem or Invalid MMI Code ' Whenever i Dial USSD Code like *129# or any other ,
i tried *+129# Not Working
i tried *129#, Not Working ,
Please Help me Anyone , How to get rid of this problem .
Thanks
Related
hi guys i have a problem with my vibrant t mobile..my brother brought it from u.s. i tried to unlock it but the internal imei was found 004xxxxxx but the imei found at battery back is different the original one.my version is ji6 so i thought helroz method could be effective and i tried that after trying it my phone network lock went off but wen i insert sim and attempt to call it says not registered on network plz help thanks...
I got the same problem, I am in trying to use my Unlocked phone in India... but have no clue whats wrong! any help regarding this issue will be greatly appreciated!
hey i found the solution is ur version ji6??
Yes! Mine is ji6
please i am having the same problem also same ji6 what was the fix???
i tried every possible way for that nothing worked for me but later i tried vodafone (INDIA) which appears to have same code that of t mobile
hi
Please send me the soln.
@[email protected]
did anyone resolve this issue? I just got the same problem.
I cannot seem to pick up vodafone network.
Connection Problem or Invalid MMI Code
I have a Coolpad 7260 phone which has been working perfectly until today.
When I made upgrade to it and after booting I got this message:
USSD code running. Connection problem or invalid MMI code.
The phone still works perfectly except for this issue. My broadband connection via Wi-Fi is being received strongly by the phone.
and i cant go to the download mode
Does anyone have any idea how to resolve this please? Thank you.
Nidal Mustafa said:
Connection Problem or Invalid MMI Code
I have a Coolpad 7260 phone which has been working perfectly until today.
When I made upgrade to it and after booting I got this message:
USSD code running. Connection problem or invalid MMI code.
The phone still works perfectly except for this issue. My broadband connection via Wi-Fi is being received strongly by the phone.
and i cant go to the download mode
Does anyone have any idea how to resolve this please? Thank you.
Click to expand...
Click to collapse
What was the upgrade exactly? Can you roll-back?
yes I gave it the original software by usb
first off when i input the code i get nothing, nothing happens.
when i call the code this appears "Connection Problem or Invalid MMI Code"
i searched for solutions but nothing
help pls
Codes only work on touchwiz firmware, aka. Samsung stock or modded if I remember correctly.
Also, if you're using other dialer than original you can get same error.
Sent from my GT-I9300 using Tapatalk 2
Hello, I am working on my friends phone that got blocked, i managed to change the IMEI but it says no network. I tried many things, even getting into the service mode like here
https://www.youtube.com/watch?v=Pai4BH3AWq8
and tries the unlock codes for the gs5 but no luck.
Do I need to change anything or what do I do?
Thanks,
have ypu fpund a ifx mine is also not wokring
Could use some help unlocking my Galaxy Ace S5830.
I was following instructions from this thread.
It's locked to Virgin Media, I don't have my original SIM but I have my mothers which was a Virgin SIM and I put that in and was able to get mobile data and make calls.
The two codes I could find in bml5.img were:
15362914
80460902
Not knowing which was correct, I tried both multiple times.
It says something like "USSD Code running" but then says "Connection problem or invalid MMI code”
I get the same “Connection problem or invalid MMI code” even when I dial *#7465625# to check if the phone is network locked.
#7465625*638*80460902#
#7465625*638*15362914#
So I was trying these, I read that adding , at the end can help, it didn't.
Tried restarting the phone a few times, checking service providers and it shows a list of about 4 but all but the one the SIM is for say (restricted), so it didn't work.
Tried a new SIM in it, still asking for unlock code when phone starts up.
Any ideas?
I went and paid for an 'unlocker app', and all the app did was read the .img file and give me the two damn codes I already found myself and told me to put them in the unlock screen when I turn the phone on, but having already tried that multiple times it didn't work.
Is there any other way I can unlock it now that I have the codes?
Thanks in advance.
Does your phone need to be on a stock/non rooted ROM for the unlocking to work?