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[Q] 4G Lost After Flashing Firmware

13th May 2014, 05:19 PM |#11  
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Quote:
Originally Posted by crohit911

Try changing it from the ussd *#*#4636#*#*

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Emmm do you have a manual to how to use the ussd??

I went into it to check it out, I touched I don't know what...
And now I can no longer connect to my network provider...

(reboot doens't helps, changing to wdmca or gsm or other options doesn't changes, VPN seems ok, I have no signal... )

Help!!!
 
 
13th May 2014, 08:22 PM |#12  
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Ok, this is what I did to screw it all :P

Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band

-> I no longer have WCDMA or GSM connection :S
(LTE still works...)

Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?

EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
Last edited by emilic; 13th May 2014 at 08:42 PM. Reason: problem solved...
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13th May 2014, 09:08 PM |#13  
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Quote:
Originally Posted by emilic

Ok, this is what I did to screw it all :P

Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band

-> I no longer have WCDMA or GSM connection :S
(LTE still works...)

Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?

EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D

Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.

Sent from my C6902 using XDA Free mobile app
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13th May 2014, 11:33 PM |#14  
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Quote:
Originally Posted by crohit911

Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.

Sent from my C6902 using XDA Free mobile app

Actually, there's an app in Google Play that is a shortcut to this ussd code : 4G LTE SWITCH
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