Question about Samsung SGH-D840 Smartphone
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Posted on Jan 02, 2017
It's better you know how to open your cellphone,and clean the board with an alcohol and dry it with the use of a hair dryer, and if you do this thing then your cellphone will be okey,try this option..
hope this may help;
Posted on Jul 28, 2008
i made a couple of calls and it turned out my phone needed flashing to reset all factory and network settings. i took it to a specialist and it cost £20
i'm sure the software to do this yourself is on the NET and you only need the phones USB fire wire to connect it.
Posted on Nov 27, 2008
The puk code is sim card spesific it comes with the sim card when you get it or you can get it by calling your phone service provider of the sim card to get the puk code.
if you have entered the puk code wrong too many times you will make the sim card useless and you will have to contact your phone service provider for a new sim card, it will probably cost.
Posted on Dec 27, 2008
SOURCE: How to reset (unlock) my
check the link above for a step by step instruction on how to unlock your phone
Posted on Jan 14, 2011
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