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[Q] Samsung Galaxy Quattro (Win Duos) Invalid IMEI

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By mr.unique, Junior Member on 5th July 2014, 02:25 PM
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I purchased a new Grand Quattro from Hong Kong. But now when I start the phone it shows "Invalid IMEI". Due to which I am not able to dial or receive any calls.

I have tried inserting several different codes like *#*#3646633#*#* and *#*#889988#*#* to try to enter the Engineering Mode and reinsert the IMEI but the codes are not working. Is there any other way I can solve this problem?

Thanks for the help. . . . Your answer would be much appreciated
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