I was trying to dial *#06# in order to check my IMEI and I keep getting the error "Connection problem or invalid MMI code." I'm currently running the at&t version on Diet ICS 7.11.12. Any idea what's up?
From my understanding, codes don't work on phones with custom software.
this message brought to you by my GalaxyS3
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.
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Click to collapse
What was the upgrade exactly? Can you roll-back?
yes I gave it the original software by usb
Hi all,
I have LG optimus LTE 2 (F160K) and I have got problem while sending USSD code error "Connection problem or invalid MMI code".
As I see from another users it must be working. Tried flashing stock and many other roms but still no luck.
Logcat is included in the atachment. please help me in understanding whats the problem while sending USSD code.
bump
Hello all,
i have been recieve today my I545 , when i try to call numbers which start * its giving me mmi error , for example i want call *054 and i get error about some MMI code , how can slove it ?
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